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Renesas M38239GCFP#U0
- Part No.:
- M38239GCFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-BQFP
- Datasheet:
-
M38239GCFP#U0.pdf
- Description:
- IC MCU 8BIT 48KB QZROM 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,044
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Product details
Overview
M38239GCFP#U0 from Renesas Electronics is an 8-bit CMOS microcomputer based on the 740 family core, featuring integrated LCD drive control (4 commons, 32 segments), 8-channel 10-bit A/D converter, UART/clock-synchronized serial interface, three 8-bit and two 16-bit timers, and watchdog timer - designed for embedded consumer electronics with display and analog sensing requirements.
For engineers reviewing the M38239GCFP#U0 datasheet, M38239GCFP#U0 pinout, M38239GCFP#U0 application, or M38239GCFP#U0 equivalent, this page delivers verified technical context, exact package mapping (80-pin QFP), confirmed pin functions including SEG/COM/LCD, ANx, INTx, and KWx inputs, and real-world use cases in battery-powered appliances and portable instrumentation.
Technical Context
The M38239GCFP#U0 implements a 740-family CPU with 71 basic instructions and minimum 0.4 µs instruction execution time at 10 MHz (high-speed mode). It integrates dual clock systems: main oscillator (XIN/XOUT with built-in feedback resistor for ceramic resonator or quartz crystal) and sub-clock (XCIN/XCOUT for 32 kHz crystal or on-chip oscillator).
Its peripheral set includes programmable I/O ports (49 total, with software pull-up/pull-down on P0–P7 except P40), 17 interrupt sources with 16 vectors, key-on wake-up capability across 8 pins (KW0–KW7), and LCD bias/duty support for 1/2, 1/3, and 1/4 duty ratios - all operating across 1.8–5.5 V supply range with low-power modes down to 18 µW.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 740-family 8-bit architecture with 71 instructions and 0.4 µs min instruction cycle at 10 MHz |
| ROM / RAM | 49,152 bytes QzROM (49,022 user-accessible) and 2,048 bytes RAM including LCD display RAM |
| A/D Converter | 10-bit resolution × 8 channels, supporting single- or continuous-conversion modes with external trigger input (ADT) |
| LCD Driver | Supports 1/2, 1/3, or 1/4 duty ratio with 4 common outputs (COM0–COM3) and up to 32 segment outputs (SEG0–SEG31) |
| Timers | Three 8-bit timers (T1–T3) and two 16-bit timers (Timer X, Timer Y) with capture/compare and PWM output capability |
| Supply Voltage | Operates from 1.8 V to 5.5 V across multiple clock division modes (frequency/2, /4, /8, low-speed) |
| Power Dissipation | 18 mW typical at 5 V / 8 MHz (frequency/2 mode); 18 µW at 2.5 V with 32 kHz sub-clock active |
Pinout & Package
Package: PRQP0080GB-A - 80-pin plastic-molded QFP (0.8 mm pitch), RoHS-compliant, standard industrial temperature grade (–20 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Primary digital power rails; VCC must be 1.8–5.5 V, VSS tied to 0 V reference |
| XIN / XOUT | Main clock input/output | Connect external ceramic resonator or quartz crystal; internal feedback resistor enables oscillator without external components |
| XCIN / XCOUT | Sub-clock input/output | Supports 32 kHz quartz crystal only; no external clock input allowed - used for RTC and ultra-low-power wake-up |
| P60–P67/AN0–AN7 | Analog input channels | Eight dedicated A/D input pins with shared port functionality; require AVSS and VREF connections for accurate conversion |
| SEG0–SEG11, COM0–COM3 | LCD segment/common outputs | Direct drive for static or multiplexed LCD panels; COM3 unused in 1/3 duty, COM2/COM3 unused in 1/2 duty |
| P20–P27/KW0–KW7 | Key-on wake-up inputs | Dedicated interrupt-capable inputs enabling low-power sleep exit via external keypad press - no external pull resistors needed |
Key Features
| Feature | Design Value |
|---|---|
| ROM Correction Function | Two 32-byte blocks enable field correction of QzROM contents without reprogramming hardware |
| Software Pull-up/Pull-down | Configurable on P0–P7 (except P40) eliminates need for external biasing components on I/O lines |
| Real-Time Port (RTP) | RTP0/RTP1 pins provide dedicated hardware counters for elapsed-time measurement independent of CPU activity |
| Low-Power Modes | Sub-clock active mode draws only 18 µW; on-chip oscillator standby draws 35 µW - ideal for battery-operated displays |
| Interrupt Architecture | 17 sources with 16 vectors and priority encoding ensure deterministic response to sensor, timer, and key events |
Applications
| Portable Audio Devices | Home Appliance Control Panels |
|---|---|
Use Scenario: Battery-powered MP3 players and portable radios requiring segmented LCD display and button-driven UI. IC Role / Device Role / Timing Role: Central controller managing audio playback, LCD refresh (via built-in driver), and key scan (using KW0–KW7 inputs). Use Value: Eliminates external LCD driver and discrete A/D for volume/sensor inputs; 1.8 V operation extends battery life in AA/AAA-powered units. | Use Scenario: Microwave ovens and washing machines with numeric LED/LCD interfaces and temperature/humidity sensing. IC Role / Device Role / Timing Role: Main system MCU handling user input, motor timing (via 16-bit timers), and analog sensor acquisition (AN0–AN7). Use Value: Integrated 10-bit A/D and high-current I/O reduce BOM count; ROM correction supports post-production calibration updates. |
| Industrial Handheld Testers | Smart Thermostats |
Use Scenario: Portable multimeters and environmental monitors needing compact size, low power, and analog front-end integration. IC Role / Device Role / Timing Role: Signal acquisition MCU performing simultaneous multi-channel sampling (8× 10-bit A/D), LCD update, and serial data logging (UART). Use Value: On-chip serial interface and 16-bit timers simplify firmware-based waveform generation and timestamping without external logic. | Use Scenario: Residential thermostats with backlit LCD, ambient temperature/humidity sensing, and HVAC relay control. IC Role / Device Role / Timing Role: Primary controller executing PID loop (using A/D inputs), driving 4-common LCD, and managing schedule-based wake-up via sub-clock. Use Value: Sub-clock wake-up (32 kHz) and 18 µW low-power mode enable years of operation on coin-cell backup during power outages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M38239GCHP#U0 | Same ROM/RAM specs and peripherals, but uses PLQP0080KB-A (0.5 mm pitch LQFP) instead of PRQP0080GB-A (0.8 mm pitch QFP) | Requires PCB redesign due to finer pitch and different land pattern; identical firmware compatibility | Select when higher component density or thermal performance justifies layout revision |
| M38238G8FP#U0 | 32 KB QzROM (32,638 user), 1,536-byte RAM, same 80-pin QFP package and peripheral set | Lower memory capacity suits simpler UIs or fixed-function appliances without firmware expansion needs | Choose for cost-sensitive designs where full 49 KB ROM is unnecessary and memory headroom is minimal |
Compared with M38239GCFP#U0, the M38239GCHP#U0 offers identical functionality in a denser LQFP package requiring layout change, while M38238G8FP#U0 provides reduced memory at lower cost - both retain full peripheral compatibility and require no firmware modification.
Availability
M38239GCFP#U0 is available at Aetrix Electronics and suitable for portable audio devices, home appliance control panels, and industrial handheld testers requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for M38239GCFP#U0 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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.
The 3823 Group targets cost-sensitive, display-integrated consumer and industrial applications - emphasizing low-voltage operation, integrated LCD driving, and flexible analog interfacing without external support ICs.
FAQ
What is the maximum operating frequency of the M38239GCFP#U0?
The M38239GCFP#U0 supports a maximum main clock frequency of 10 MHz in high-speed mode, delivering a minimum instruction execution time of 0.4 µs. This frequency is achievable using an external ceramic resonator or quartz crystal connected to XIN/XOUT, with the internal feedback resistor eliminating need for external components.
Does the M38239GCFP#U0 support true 10-bit A/D conversion across all eight channels?
Yes, the M38239GCFP#U0 provides true 10-bit resolution on all eight analog input channels (AN0–AN7). The A/D converter supports both single-shot and continuous conversion modes, with optional external trigger input (ADT pin) for precise timing synchronization - critical for sensor sampling in portable instrumentation.
Can the M38239GCFP#U0 drive a 1/4-duty LCD without external components?
Yes, the M38239GCFP#U0's integrated LCD drive control circuit natively supports 1/4-duty ratio with four common outputs (COM0–COM3) and up to 32 segment outputs (SEG0–SEG31). No external biasing or charge-pump ICs are required - VL1–VL3 pins accept externally generated voltage levels for optimal contrast control.
What low-power modes are available on the M38239GCFP#U0, and what is the lowest current draw?
The M38239GCFP#U0 offers multiple low-power states, including sub-clock active mode drawing 18 µW (at 2.5 V, 32 kHz XCIN) and on-chip oscillator standby drawing 35 µW (same conditions). These modes retain RAM content and allow wake-up via KWx pins or RTC interrupts - essential for battery-backed thermostats and handheld meters.
Is the M38239GCFP#U0 pin-compatible with other members of the 3823 Group in the same package?
Yes, all 3823 Group devices in the PRQP0080GB-A (80-pin QFP) package - including M38234G4FP#U0, M38235G6FP#U0, and M38239GCFP#U0 - share identical pinouts and electrical characteristics. Firmware and hardware designs are interchangeable across memory variants, enabling scalable product families with minimal redesign effort.
M38239GCFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-BQFP
- Series:
- 740/38000
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 740
- Core Size:
- 8-Bit
- Speed:
- 10MHz
- Connectivity:
- SIO, UART/USART
- Peripherals:
- LCD, WDT
- Number of I/O:
- 49
- Program Memory Size:
- 48KB (48K x 8)
- Program Memory Type:
- QzROM
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 8x8b, 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
M38239GCFP#U0 FAQ
1.How can I place an order for M38239GCFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for M38239GCFP#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 M38239GCFP#U0 reliable?
The price and inventory of M38239GCFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M38239GCFP#U0 is usually 5 days.
3.What payment methods are accepted for M38239GCFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M38239GCFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M38239GCFP#U0?
M38239GCFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M38239GCFP#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 M38239GCFP#U0?
For technical support, including M38239GCFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M38239GCFP#U0 requirements.
6.How does Aetrix verify that M38239GCFP#U0 is sourced from the original manufacturer or authorized distributors?
All M38239GCFP#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 M38239GCFP#U0 meets industry standards.
7.What is the process for return or replacement of M38239GCFP#U0?
All M38239GCFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with M38239GCFP#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 M38239GCFP#U0 part is unused and in its original packaging.
Return procedure for M38239GCFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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