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Renesas R5F21322MNSP#U0
- Part No.:
- R5F21322MNSP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F21322MNSP#U0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,593
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Product details
Overview
R5F21322MNSP from Renesas Electronics is an 8 KB flash, 1 KB RAM, 20-pin LSSOP microcontroller based on the R8C CPU core, delivering 50 ns minimum instruction execution at 20 MHz (VCC = 2.7–5.5 V), integrated 10-bit × 4-channel ADC, and hardware LIN support via Timer RA and UART0 - deployed in consumer audio equipment and office automation control systems.
For engineers reviewing the R5F21322MNSP datasheet, R5F21322MNSP pinout, R5F21322MNSP application, or R5F21322MNSP equivalent, key selection criteria include its -20°C to +85°C operating range (N version), background operation (BGO) data flash capability, and dual-clock domain support (XIN/XCIN + on-chip oscillators).
Technical Context
The R5F21322MNSP implements the R8C 16-bit CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its memory map spans 1 Mbyte (00000h–FFFFFh), with program ROM at 0E000h–0FFFFh and data flash (1 KB × 4 blocks) at 03000h–03FFFh.
Peripheral integration includes UART0/UART2 (with I²C mode), SSU/I²C-bus shared interface, LIN module, four independent timers (RA/RB/RC/RE), DTC with 21 activation sources, and voltage detection circuitry supporting power-on reset and selectable detection levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 50 ns min. instruction time at 20 MHz |
| Memory | 8 KB program flash, 1 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO |
| ADC | 10-bit resolution × 4 channels with sample-and-hold and sweep mode |
| Timers | Timer RA (8-bit), RB (8-bit PWM), RC (16-bit w/ 4 capture/compare), RE (real-time clock) |
| Serial Interfaces | UART0, UART2 (I²C mode), SSU/I²C-bus (shared), hardware LIN via UART0 + Timer RA |
| Operating Range | -20°C to +85°C (N version), supply voltage 1.8–5.5 V |
| Power Modes | Standard, wait (3.5 µA @ 3.0 V, 32 kHz), stop (2.0 µA @ 3.0 V) |
Pinout & Package
Package: 20-pin LSSOP (PLSP0020JB-A, 0.65 mm pitch), surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0 / AN8 / KI0 | Analog input / key interrupt / timer input | Supports A/D conversion on channel 8, key wake-up, and TRCIOD trigger |
| P1_4 / TXD0 / TRCCLK | UART0 transmit / timer clock input | Simultaneous serial output and external clock source for Timer RC |
| P3_7 / SDA2 / TRAO | I²C data / timer output | Shared pin enables I²C slave communication and Timer RA output without conflict |
| P4_6 / XIN / XCIN | Primary/secondary crystal input | Dual-function input supports high-speed (XIN) and low-speed (XCIN, 32 kHz) crystal oscillation |
| RESET | Active-low reset input | Hardware reset assertion resets CPU, peripherals, and registers to known state |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Enables concurrent program execution and data flash erase/write, critical for firmware updates without system halt |
| Hardware LIN Module | Integrated LIN 2.0/2.1 support via UART0 + Timer RA eliminates need for external transceiver in automotive body electronics |
| Dual Clock Domains | Independent XIN (up to 20 MHz) and XCIN (32 kHz) circuits allow real-time clock operation during high-speed processing suspension |
| Voltage Detection Circuit | Configurable VDD monitoring with power-on reset and two selectable detection levels ensures reliable brown-out recovery |
| Low-Power Wait Mode | 3.5 µA current draw at 3.0 V with 32 kHz XCIN active enables battery-powered sensor nodes with sub-second wake latency |
Applications
| Audio Equipment Control | Office Automation |
|---|---|
Use Scenario: Volume, tone, and input source control in compact stereo receivers and Bluetooth speakers. IC Role / Device Role / Timing Role: Main system controller managing button inputs, display driver, DAC interface, and IR decoding. Use Value: Integrated 10-bit ADC reads potentiometer positions; UART0 handles IR remote protocol decoding; low-power modes extend battery life in portable units. | Use Scenario: Paper jam detection, motor sequencing, and status LED control in desktop printers and scanners. IC Role / Device Role / Timing Role: Peripheral coordinator interfacing with sensors, stepper drivers, and USB-to-parallel bridge ICs. Use Value: Four-channel ADC monitors thermal sensors; Timer RC generates precise motor phase timing; LIN module enables daisy-chain diagnostics with host MCU. |
| Consumer Appliance UI | Industrial Panel Meters |
Use Scenario: Keypad scanning, LCD backlight dimming, and temperature feedback in microwave ovens and washing machines. IC Role / Device Role / Timing Role: Human-machine interface processor handling touch/key inputs, PWM-driven backlight, and analog thermistor readings. Use Value: Key input interrupts (KI0–KI3) enable immediate response; PWM output on Timer RB drives adjustable LED brightness; internal voltage monitor prevents erratic behavior during line dips. | Use Scenario: Analog signal conditioning and local display update in DIN-rail mounted multimeters and process monitors. IC Role / Device Role / Timing Role: Signal acquisition front-end with ADC, comparator-based threshold detection, and RS-485 communication via UART2. Use Value: Comparator A/B provide fast overvoltage/undervoltage alerts; UART2 I²C mode interfaces with external EEPROM for calibration data; 1.8–5.5 V operation accommodates wide industrial supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21322MDSP | Same flash/RAM specs but rated for -40°C to +85°C (D version); identical pinout and peripheral set | Required for extended-temperature industrial or automotive under-hood environments | Select R5F21322MDSP when ambient operating temperature exceeds 85°C or drops below -20°C |
| R5F21324MNSP | 16 KB program ROM, 1.5 KB RAM, same package and peripherals; higher memory density only | Suitable for applications needing larger firmware footprint (e.g., USB stack, OTA update logic) | Choose R5F21324MNSP if code size exceeds 8 KB or additional RAM buffers are required for communication stacks |
Compared with R5F21322MDSP and R5F21324MNSP, the R5F21322MNSP provides optimal cost-performance balance for commercial-grade appliances where extended temperature range or extra memory is unnecessary.
Availability
R5F21322MNSP is available at Aetrix Electronics and suitable for audio equipment control, office automation, consumer appliance UI, and industrial panel meters requiring stable component supply across production lifecycles.
Supply support for R5F21322MNSP 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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/32M Group, including the R5F21322MNSP, was designed for cost-sensitive, low-power embedded control in consumer electronics - emphasizing integration of LIN, ADC, timers, and flash flexibility without external support components.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F21322MNSP?
The R5F21322MNSP operates at up to 20 MHz when supplied with 2.7–5.5 V, achieving a 50 ns minimum instruction execution time. At lower voltages (1.8–5.5 V), it supports 5 MHz operation with 200 ns minimum instruction time - enabling flexible power/performance trade-offs in battery-powered designs.
Does the R5F21322MNSP support in-system programming and debug interfaces?
Yes, the R5F21322MNSP includes on-chip debug capability and supports in-system flash rewriting via dedicated debug pins. It does not require external programming hardware beyond standard Renesas E1/E20 debuggers, and the background operation (BGO) function allows live firmware updates without halting application code execution.
How many analog input channels does the R5F21322MNSP ADC support, and what is its resolution?
The R5F21322MNSP integrates a 10-bit successive-approximation ADC with four dedicated analog input channels (AN8–AN11), plus sample-and-hold and sweep mode for sequential conversions - sufficient for reading multiple thermistors, potentiometers, or voltage dividers in appliance control applications.
Can the R5F21322MNSP generate PWM signals, and which timer provides this functionality?
Yes, the R5F21322MNSP generates PWM using Timer RB, an 8-bit timer with programmable waveform generation mode that supports variable-duty-cycle outputs on up to two pins. This enables direct LED dimming, fan speed control, or DC motor drive without external PWM ICs.
What is the purpose of the data flash memory in the R5F21322MNSP, and how is it organized?
The R5F21322MNSP contains 4 KB of data flash memory organized as four 1 KB blocks (A–D), each independently erasable and writable while the CPU executes code from program ROM. This architecture supports parameter storage, calibration data logging, and firmware update staging - all with background operation enabled.
R5F21322MNSP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- R8C/3x/32M
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 15
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21322MNSP#U0 FAQ
1.How can I place an order for R5F21322MNSP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21322MNSP#U0 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 R5F21322MNSP#U0 reliable?
The price and inventory of R5F21322MNSP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21322MNSP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21322MNSP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21322MNSP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21322MNSP#U0?
R5F21322MNSP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21322MNSP#U0 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 R5F21322MNSP#U0?
For technical support, including R5F21322MNSP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21322MNSP#U0 requirements.
6.How does Aetrix verify that R5F21322MNSP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21322MNSP#U0 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 R5F21322MNSP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21322MNSP#U0?
All R5F21322MNSP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21322MNSP#U0, 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 R5F21322MNSP#U0 part is unused and in its original packaging.
Return procedure for R5F21322MNSP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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