Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Renesas R5F12048ASP#30

Name: R5F12048ASP#30
Brand: Renesas
SKU: R5F12048ASP#30
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: R5F12048ASP#30

Manufacturer:: Renesas

Category:: Microcontrollers

Package:: 16-SSOP (0.173", 4.40mm Width)

Datasheet:: R5F12048ASP#30.pdf

Description:: MCU: RL78

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,384

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

R5F12048ASP#30 from Renesas Electronics is a 16-pin RL78/G15 8-bit microcontroller with 8 KB code flash, 1 KB RAM, and 1 KB data flash, operating from 2.4 V to 5.5 V. It integrates an RL78 CPU core (3-stage pipeline), 8-channel 16-bit timer array, 7-channel 8/10-bit ADC, dual simplified I²C, UART, and CSI interfaces, and supports industrial temperature range (−40°C to +105°C) for embedded control in HVAC sensors and motor drive modules.

For engineers reviewing the R5F12048ASP#30 datasheet, R5F12048ASP#30 pinout, R5F12048ASP#30 application, or R5F12048ASP#30 equivalent, key selection considerations include its 16-pin SSOP package, 8 KB flash capacity, 7-channel analog input capability, integrated high-speed on-chip oscillator (±1.0% accuracy at −20°C to +85°C), and support for STOP/HALT low-power modes in resource-constrained industrial designs.

Technical Context

The R5F12048ASP#30 implements the RL78-S2 CPU core with CISC architecture, 1 MB address space, and configurable instruction execution time (0.0625 μs at 16 MHz or 1.0 μs at 1 MHz). Its clock system combines selectable high-speed on-chip oscillator (1–16 MHz), low-speed on-chip oscillator (15 kHz), and external crystal support (X1/X2, 1–12 MHz) with EXCLK input up to 16 MHz.

Peripheral integration includes TAU0 timer array (8 channels), 12-bit interval timer, watchdog timer, programmable clock/buzzer output (PCLBUZ0), and dual serial interface units supporting CSI (SPI-like), simplified I²C, and full I²C protocols - all accessible via multiplexed port pins under PIOR register control.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	RL78-S2 8-bit CISC with 3-stage pipeline and 1 MB address space
Flash Memory	8 KB code flash (1 KB block size) and 1 KB data flash (512 B block, 1M rewrite cycles)
Operating Voltage	2.4 V to 5.5 V single supply - enables direct interface with 3.3 V and 5 V logic systems
ADC Resolution	8/10-bit SAR ADC with 7 analog inputs (ANI0–ANI6) and internal 0.815 V reference
Timer Resources	8-channel 16-bit timer array (TAU0), 1-channel 12-bit interval timer, and 1-channel watchdog timer
Oscillator Accuracy	±1.0% for high-speed on-chip oscillator (−20°C to +85°C), ±1.5% over full −40°C to +105°C range
Package & Pin Count	16-pin plastic SSOP (4.4 × 5.0 mm, 0.65-mm pitch), RoHS-compliant

Pinout & Package

Package: 16-pin plastic SSOP (PRSP0016JC-B), 0.65-mm pitch, 4.4 × 5.0 mm body size, with exposed pad not present (non-QFN).

Pin/Terminal	Circuit Role	Design Meaning
P41	Timer I/O / Interrupt Input	TI03/TO03 primary timer channel; supports PWM output and INTP4 interrupt request
P40	Debug / Timer I/O	TOOL0 debug interface pin; also provides TI01/TO01 timer function and INTP2 interrupt
P125	Reset / System Control	Active-low RESET input with internal SPOR circuit; supports VCOUT0 comparator output multiplexing
P137	Interrupt / Timer Input	INTP0 interrupt source and TI00 timer input - critical for wake-up from STOP mode
P122	Crystal / Clock Input	X2 terminal for external crystal oscillator (1–12 MHz); also serves as EXCLK and TI05/TO05
P121	Crystal / Timer Output	X1 terminal for crystal oscillator; doubles as TI07/TO07 timer channel and INTP3 input
VSS	Ground Reference	Dedicated power ground pin - must be connected to PCB ground plane for noise immunity
VDD	Power Supply	Main 2.4–5.5 V supply pin - requires local 0.1 µF ceramic decoupling capacitor
P00	UART / Serial I/O	TOOLTxD debug output and SO00/TxD0 UART transmit; supports SCK01/SCL01 and SCLA0
P01	UART / ADC / Serial I/O	TOOLRxD debug input, ANI0 analog input, SI00/RxD0 UART receive, and SDAA0 I²C interface
P02	Buzzer / ADC / Clock	PCLBUZ0 programmable clock/buzzer output, ANI1 analog input, VCOUT0 comparator output
P03	Comparator / Timer / UART	IVCMP0 comparator input, TO00 timer output, SO00/TxD0 UART transmit, and INTP4 interrupt
P04	ADC / Timer / Serial I/O	ANI3 analog input, IVREF0 comparator reference, TI01/TO01 timer, and SI00/RxD0/SDA00 serial data
P05	ADC / Timer / Serial I/O	ANI4 analog input, TI02/TO02 timer, SO01 serial output, and SCK00/SCL00 serial clock
P06	ADC / Serial I/O	ANI5 analog input, SI01/SDA01 serial data, SCLA0 serial clock, and SCK00/SCL00 clock
P07	ADC / Serial I/O	ANI6 analog input, SCK01/SCL01 serial clock, SDAA0 I²C data, and TO03 timer output

Key Features

Feature	Design Value
Low-Power Operation	HALT and STOP modes reduce current draw; 54 µA/MHz active current enables battery-powered operation
On-Chip Debug Support	Integrated TOOL0/TOOLRxD/TOOLTxD interface eliminates need for external JTAG emulator during development
Flexible Clock System	Three independent clock sources (high-speed on-chip, low-speed on-chip, external crystal) with automatic failover and stabilization monitoring
Self-Programming Flash	Code and data flash reprogrammable in-system without boot swap - supports field firmware updates
Hardware Peripheral Redirection	Peripheral I/O Redirection Registers (PIOR) allow dynamic remapping of serial, timer, and interrupt functions to alternate pins

Applications

Smart Thermostat Sensor Node	Industrial Motor Drive Feedback Module
Use Scenario: Compact HVAC sensor node measuring temperature, humidity, and airflow using analog and digital sensors. IC Role / Device Role / Timing Role: Main controller executing PID loop, managing ADC sampling (ANI0–ANI6), driving buzzer alerts (PCLBUZ0), and communicating via UART to gateway. Use Value: 7-channel ADC and integrated 0.815 V reference enable precise multi-sensor acquisition without external references; STOP mode extends battery life beyond 2 years.	Use Scenario: Closed-loop feedback unit monitoring motor current, voltage, and thermal status in 24 V DC brushless drives. IC Role / Device Role / Timing Role: Real-time peripheral manager acquiring analog signals (ANI0–ANI6), generating PWM timing (TAU0), and reporting faults via simplified I²C to main MCU. Use Value: 8-channel 16-bit timer array provides synchronized PWM generation and capture for motor phase control; −40°C to +105°C rating ensures reliability in enclosed drive enclosures.
Programmable Power Supply Monitor	IoT Edge Node with Local Decision Logic
Use Scenario: DIN-rail mounted AC/DC converter monitor detecting overvoltage, undervoltage, and thermal faults. IC Role / Device Role / Timing Role: Standalone supervisor IC reading analog rails (ANI0–ANI3), comparing against thresholds (IVCMP0/1), and asserting fault signals via GPIO. Use Value: Dual comparator with selectable internal/external reference allows precise trip-point configuration; 1 KB data flash stores calibration coefficients across temperature.	Use Scenario: Battery-powered environmental sensor aggregating CO₂, VOC, and particulate data before wireless transmission. IC Role / Device Role / Timing Role: Local decision engine performing sensor fusion, anomaly detection, and sleep/wake scheduling using HALT mode and INTP0 wake-up. Use Value: 8 KB flash accommodates lightweight ML inference models; BCD correction circuit accelerates numeric display formatting for local LCD output.

Smart Thermostat Sensor Node

Industrial Motor Drive Feedback Module

Use Scenario: Compact HVAC sensor node measuring temperature, humidity, and airflow using analog and digital sensors.

IC Role / Device Role / Timing Role: Main controller executing PID loop, managing ADC sampling (ANI0–ANI6), driving buzzer alerts (PCLBUZ0), and communicating via UART to gateway.

Use Value: 7-channel ADC and integrated 0.815 V reference enable precise multi-sensor acquisition without external references; STOP mode extends battery life beyond 2 years.

Use Scenario: Closed-loop feedback unit monitoring motor current, voltage, and thermal status in 24 V DC brushless drives.

IC Role / Device Role / Timing Role: Real-time peripheral manager acquiring analog signals (ANI0–ANI6), generating PWM timing (TAU0), and reporting faults via simplified I²C to main MCU.

Use Value: 8-channel 16-bit timer array provides synchronized PWM generation and capture for motor phase control; −40°C to +105°C rating ensures reliability in enclosed drive enclosures.

Programmable Power Supply Monitor

IoT Edge Node with Local Decision Logic

Use Scenario: DIN-rail mounted AC/DC converter monitor detecting overvoltage, undervoltage, and thermal faults.

IC Role / Device Role / Timing Role: Standalone supervisor IC reading analog rails (ANI0–ANI3), comparing against thresholds (IVCMP0/1), and asserting fault signals via GPIO.

Use Value: Dual comparator with selectable internal/external reference allows precise trip-point configuration; 1 KB data flash stores calibration coefficients across temperature.

Use Scenario: Battery-powered environmental sensor aggregating CO₂, VOC, and particulate data before wireless transmission.

IC Role / Device Role / Timing Role: Local decision engine performing sensor fusion, anomaly detection, and sleep/wake scheduling using HALT mode and INTP0 wake-up.

Use Value: 8 KB flash accommodates lightweight ML inference models; BCD correction circuit accelerates numeric display formatting for local LCD output.

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
R5F12047ASP#30	4 KB code flash (vs. 8 KB), identical pinout, same peripherals and temperature grade	Suitable for simpler firmware with smaller memory footprint; no change to PCB layout or driver stack	Select when application firmware fits within 4 KB and cost optimization is prioritized
R5F12048GSP#30	Identical electrical specs and pinout; differs only in marking (G = industrial temp grade, same −40°C to +105°C range)	No functional difference; GSP variant uses same Renesas ordering code structure and packaging	Choose R5F12048GSP#30 if procurement system requires explicit G-suffix part number for traceability

Compared with R5F12047ASP#30, the R5F12048ASP#30 provides double code flash capacity for feature-rich firmware, while R5F12048GSP#30 offers identical functionality with alternate industrial-grade part numbering - both retain full pin and software compatibility.

Availability

R5F12048ASP#30 is available at Aetrix Electronics and suitable for industrial motor control, smart building sensor nodes, and programmable power supply monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F12048ASP#30 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G15 product line delivers ultra-low-power 8-bit MCUs optimized for cost-sensitive, space-constrained industrial control applications - emphasizing robustness, integrated analog peripherals, and seamless toolchain support.

FAQ

What is the maximum operating frequency and instruction execution time of the R5F12048ASP#30?

The R5F12048ASP#30 supports a maximum high-speed on-chip oscillator frequency of 16 MHz, enabling a minimum instruction execution time of 0.0625 μs. This timing assumes the RL78 CPU core is configured for high-speed operation with the oscillator selected via option byte bits 0–2. The device also supports lower frequencies (1–8 MHz) for reduced power consumption, extending instruction time up to 1.0 μs at 1 MHz operation.

Does the R5F12048ASP#30 support external crystal oscillators, and what are the valid frequency ranges?

Yes, the R5F12048ASP#30 supports external crystal oscillators via X1 and X2 pins, with a valid frequency range of 1 MHz to 12 MHz under VDD = 2.4 V to 5.5 V. The device also accepts external clock input (EXCLK) from 1 MHz to 16 MHz. Crystal startup stabilization must be monitored using the oscillation stabilization time counter (OSTC) register to ensure reliable CPU initialization after reset.

How many analog input channels does the R5F12048ASP#30 provide, and what ADC resolution options are available?

The R5F12048ASP#30 provides 7 analog input channels (ANI0 through ANI6) and features an 8/10-bit successive approximation register (SAR) ADC. Resolution is selectable per conversion, and the module includes an internal reference voltage of 0.815 V (typical). Input voltage range is rail-to-rail (0 V to VDD), supporting direct interface with sensors operating across the full 2.4–5.5 V supply range.

Can the R5F12048ASP#30 perform in-system programming of its flash memory, and are there any restrictions?

Yes, the R5F12048ASP#30 supports in-system programming of both code flash and data flash memory using its on-chip self-programming function. Code flash writes require prior erasure of 1 KB blocks; data flash supports 32-bit rewrite units. Background operation (BGO) is not supported - code execution halts during data flash writes. The device does not implement boot swap functionality, so firmware updates must be managed via application-level jump vectors.

What communication interfaces are integrated into the R5F12048ASP#30, and how are they mapped to pins?

The R5F12048ASP#30 integrates UART (1 channel), simplified I²C (2 channels), full I²C (1 channel), and CSI (SPI-like, 2 channels). These are mapped across P00–P07, P40–P41, and P06–P07: UART uses P00 (TxD0) and P01 (RxD0); simplified I²C channels appear on P02/P03 (SCL00/SDA00) and P06/P07 (SCL01/SDA01); full I²C (IICA0) uses P00 (SCLA0) and P01 (SDAA0).

R5F12048ASP#30 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Package/Case:: 16-SSOP (0.173", 4.40mm Width)

Series:: RL78/G15

Packaging:: Tray

Product Status:: Last Time Buy

Programmable:: -

Core Processor:: RL78

Core Size:: 16-Bit

Speed:: 16MHz

Connectivity:: CSI, I2C, SPI, UART/USART

Peripherals:: POR, PWM, WDT

Number of I/O:: 13

Program Memory Size:: 8KB (8K x 8)

Program Memory Type:: FLASH

EEPROM Size:: 1K x 8

RAM Size:: 1K x 8

Voltage - Supply (Vcc/Vdd):: 2.4V ~ 5.5V

Data Converters:: A/D 7x8/10b SAR

Oscillator Type:: External

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

R5F12048ASP#30 FAQ

1.How can I place an order for R5F12048ASP#30 through Aetrix?

Please submit a Request for Quotation (RFQ) for R5F12048ASP#30 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for R5F12048ASP#30 reliable?

The price and inventory of R5F12048ASP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F12048ASP#30 is usually 5 days.

3.What payment methods are accepted for R5F12048ASP#30?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F12048ASP#30 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for R5F12048ASP#30?

R5F12048ASP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your R5F12048ASP#30 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for R5F12048ASP#30?

For technical support, including R5F12048ASP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F12048ASP#30 requirements.

6.How does Aetrix verify that R5F12048ASP#30 is sourced from the original manufacturer or authorized distributors?

All R5F12048ASP#30 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R5F12048ASP#30 meets industry standards.

7.What is the process for return or replacement of R5F12048ASP#30?

All R5F12048ASP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F12048ASP#30, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The R5F12048ASP#30 part is unused and in its original packaging.

Return procedure for R5F12048ASP#30:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…