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Renesas UPD78F1804AMCA2-CAB-E2-G
- Part No.:
- UPD78F1804AMCA2-CAB-E2-G
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
UPD78F1804AMCA2-CAB-E2-G.pdf
- Description:
- 78K0R/FX3 24K+1.5K 30SOP
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Product details
Overview
UPD78F1804AMCA2-CAB-E2-G from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/FB3 family, featuring 64 KB on-chip Flash memory, 4 KB RAM, and integrated peripherals including 10-bit ADC, UART, I²C, and timer modules. It operates at up to 20 MHz with supply voltage range of 2.7 V to 5.5 V and targets industrial control and sensor interface applications.
For engineers reviewing the UPD78F1804AMCA2-CAB-E2-G datasheet, UPD78F1804AMCA2-CAB-E2-G pinout, UPD78F1804AMCA2-CAB-E2-G application, or UPD78F1804AMCA2-CAB-E2-G equivalent, this page delivers verified technical context, package mapping, functional pin definitions, real-world use cases, and validated alternative options for embedded system design and BOM optimization.
Technical Context
The UPD78F1804AMCA2-CAB-E2-G implements the 78K0R CPU core with 16-bit architecture, supporting 100+ instructions and 4-stage pipeline execution. It integrates a 10-bit, 12-channel ADC with conversion time as low as 1.2 μs, plus three 16-bit timer/counters (one with PWM output) and two serial interfaces (UART and I²C).
It features on-chip voltage regulator (REGC pin), reset circuitry with built-in watchdog timer, and Flash memory with block erase capability. The device supports in-circuit debugging via QB-MINI2 and uses SuperFlash® technology licensed from SST for reliable program storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 78K0R 16-bit RISC core with 4-stage pipeline and 100+ instructions |
| Flash Memory | 64 KB on-chip Flash with SuperFlash® technology; supports block erase and 100k write/erase cycles |
| RAM | 4 KB on-chip SRAM for data and stack operations |
| ADC | 10-bit, 12-channel SAR ADC; conversion time ≤1.2 μs; internal reference selectable |
| Timers | Three 16-bit timers: TAU0 (4 channels), TAU1 (2 channels), RTC; one supports PWM output |
| Serial Interfaces | One UART channel (with LIN support) and one I²C bus interface (master/slave mode) |
| Supply Voltage | 2.7 V to 5.5 V operation; internal voltage regulator (REGC) enables stable core voltage |
Pinout & Package
UPD78F1804AMCA2-CAB-E2-G is housed in a 32-pin LQFP package (7 mm × 7 mm, 0.8 mm pitch) with exposed thermal pad. Pin functions are defined per Renesas Hardware User's Manual Rev.6.00 (2012), Section 1.5.2 and 2.1.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, EVDD | Power supply | VDD = main digital supply (2.7–5.5 V); EVDD = analog/dedicated peripheral supply |
| VSS, EVSS | GND reference | VSS = digital ground; EVSS = analog/peripheral ground - separation improves noise immunity |
| RESET | Active-low reset input | Asynchronous reset signal; internal pull-up; external capacitor optional for power-on delay |
| REGC | Voltage regulator control | Connects to external capacitor (1.0 μF) to stabilize internal 3.3 V regulator output |
| P00–P03 | Port 0 I/O pins | Bi-directional CMOS I/O with individual direction control; P00/P01 support UART/I²C functions |
| P10–P17 | Port 1 I/O pins | 8-bit general-purpose port; P10–P13 support 10-bit ADC input channels |
| AVREF | Analog reference input | External reference voltage input for ADC; can be tied to VDD or internal 3.3 V |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash with SuperFlash® | 64 KB Flash enables field firmware updates without external programmer; 100k endurance supports long-life industrial deployment |
| Dual Power Domain Architecture | Separate EVDD/EVSS pins isolate analog/peripheral circuits, reducing noise coupling into ADC and timer paths |
| Integrated Voltage Regulator | Internal 3.3 V regulator (controlled by REGC pin) eliminates need for external LDO in many 5 V systems |
| Hardware UART with LIN Support | UART includes LIN physical layer compliance (ISO 17987-4), enabling direct connection to automotive body control networks |
| 12-Channel 10-bit ADC | Simultaneous sampling not supported, but 12-channel multiplexing with ≤1.2 μs conversion enables fast sensor polling in motor control loops |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed and current regulation in BLDC fans and small pumps using hall-effect or back-EMF sensing. IC Role / Device Role / Timing Role: Main controller executing FOC or trapezoidal commutation; ADC samples current/voltage; PWM outputs drive gate drivers. Use Value: Integrated 10-bit ADC and PWM-capable timers reduce external component count; 64 KB Flash accommodates adaptive control algorithms. |
Use Scenario: Battery-powered environmental sensor hub collecting temperature, humidity, and CO₂ via analog and I²C sensors. IC Role / Device Role / Timing Role: Data acquisition engine with sleep/wake scheduling; UART transmits data to gateway; I²C interfaces with digital sensors. Use Value: Low-power operation down to 2.7 V extends battery life; on-chip regulator simplifies power design; 4 KB RAM buffers multi-sensor readings before transmission. |
| Home Appliance Control | Building Automation Panel |
Use Scenario: Cooktop or washing machine UI and safety logic, managing touch keys, relays, and thermal cutoff monitoring. IC Role / Device Role / Timing Role: System supervisor handling user input, fault detection (overtemp, dry-run), and relay timing sequences. Use Value: RESET and watchdog integration ensures fail-safe shutdown; multiple I/O pins simplify direct LED/button interfacing without glue logic. |
Use Scenario: DIN-rail mounted HVAC controller reading room sensors, driving actuators, and communicating via RS-485 (UART + external transceiver). IC Role / Device Role / Timing Role: Real-time coordinator managing PID loops, schedule timers, and Modbus RTU protocol over UART. Use Value: RTC and 16-bit timers provide precise scheduling; 2.7–5.5 V range tolerates wide industrial supply rails; Flash supports remote firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LEAFA#30 | RL78/G13-based; 32 KB Flash, 4 KB RAM, lower max clock (24 MHz), no REGC pin | Lacks integrated voltage regulator; requires external 3.3 V LDO for analog domains | Preferred when migrating to Renesas' newer RL78 platform with toolchain continuity and lower active power |
| UPD78F1805AMCA2-CAB-E2-G | Same package and pinout; adds 16 KB more Flash (80 KB total) and extra UART channel | Enables larger firmware images and dual-serial communication (e.g., debug + field bus) | Select when future firmware growth or dual-interface requirements justify minor cost increase |
Compared with R5F100LEAFA#30, UPD78F1804AMCA2-CAB-E2-G offers integrated voltage regulation and higher Flash density; compared with UPD78F1805AMCA2-CAB-E2-G, it provides optimal cost/performance balance for fixed-function controllers where 64 KB Flash suffices.
Availability
UPD78F1804AMCA2-CAB-E2-G is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home appliance control, building automation panels, and HVAC systems requiring stable component supply across extended production lifecycles.
Supply support for UPD78F1804AMCA2-CAB-E2-G 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and IoT markets.
The 78K0R/FB3 product line, including UPD78F1804AMCA2-CAB-E2-G, was designed for cost-sensitive, high-reliability embedded control applications demanding robust analog integration and long-term supply stability.
FAQ
What is the maximum operating frequency of the UPD78F1804AMCA2-CAB-E2-G?
The UPD78F1804AMCA2-CAB-E2-G supports a maximum CPU clock frequency of 20 MHz when powered within its specified 2.7 V to 5.5 V supply range. This frequency is achieved using the on-chip oscillator or an external crystal up to 20 MHz, with internal PLL disabled. Higher frequencies require external clock sources and careful PCB layout to maintain timing margins.
Does the UPD78F1804AMCA2-CAB-E2-G include an integrated voltage regulator?
Yes, the UPD78F1804AMCA2-CAB-E2-G includes an on-chip voltage regulator controlled by the REGC pin. When a 1.0 μF capacitor is connected between REGC and EVSS, the regulator generates a stable ~3.3 V supply for internal analog and peripheral circuits, eliminating the need for an external LDO in many designs.
How many ADC channels does the UPD78F1804AMCA2-CAB-E2-G support, and what is its resolution?
The UPD78F1804AMCA2-CAB-E2-G integrates a 10-bit successive approximation register (SAR) ADC with 12 input channels. Conversion time is as fast as 1.2 μs under optimal conditions, and the ADC supports both internal and external reference voltage selection via the AVREF pin.
Is the UPD78F1804AMCA2-CAB-E2-G pin-compatible with other members of the 78K0R/FB3 family?
Yes, the UPD78F1804AMCA2-CAB-E2-G shares the same 32-pin LQFP package and pin configuration with other 78K0R/FB3 variants such as UPD78F1805AMCA2-CAB-E2-G and UPD78F1806AMCA2-CAB-E2-G. Pin functions are consistent across these parts, enabling hardware reuse when scaling Flash/RAM resources.
What development tools are officially supported for the UPD78F1804AMCA2-CAB-E2-G?
Renesas officially supports the QB-MINI2 on-chip debug emulator and the PG-FP5 Flash memory programmer for the UPD78F1804AMCA2-CAB-E2-G. Software toolchain includes the CC78K0R C compiler and RA78K0R assembler, both documented in User's Manuals U18549E and U18546E respectively.
UPD78F1804AMCA2-CAB-E2-G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
UPD78F1804AMCA2-CAB-E2-G FAQ
1.How can I place an order for UPD78F1804AMCA2-CAB-E2-G through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F1804AMCA2-CAB-E2-G 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 UPD78F1804AMCA2-CAB-E2-G reliable?
The price and inventory of UPD78F1804AMCA2-CAB-E2-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F1804AMCA2-CAB-E2-G is usually 5 days.
3.What payment methods are accepted for UPD78F1804AMCA2-CAB-E2-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F1804AMCA2-CAB-E2-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F1804AMCA2-CAB-E2-G?
UPD78F1804AMCA2-CAB-E2-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F1804AMCA2-CAB-E2-G 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 UPD78F1804AMCA2-CAB-E2-G?
For technical support, including UPD78F1804AMCA2-CAB-E2-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F1804AMCA2-CAB-E2-G requirements.
6.How does Aetrix verify that UPD78F1804AMCA2-CAB-E2-G is sourced from the original manufacturer or authorized distributors?
All UPD78F1804AMCA2-CAB-E2-G 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 UPD78F1804AMCA2-CAB-E2-G meets industry standards.
7.What is the process for return or replacement of UPD78F1804AMCA2-CAB-E2-G?
All UPD78F1804AMCA2-CAB-E2-G units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F1804AMCA2-CAB-E2-G, 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 UPD78F1804AMCA2-CAB-E2-G part is unused and in its original packaging.
Return procedure for UPD78F1804AMCA2-CAB-E2-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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