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Renesas M37542F4GP#U0
- Part No.:
- M37542F4GP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
M37542F4GP#U0.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,003
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Product details
Overview
M37542F4GP#U0 from Renesas Electronics is an 8-bit CMOS microcomputer based on the 740 family core, designed for embedded control in home appliances and office automation equipment. It integrates 16 KB + 4 KB Flash ROM, 1024 bytes RAM, dual 8-bit and dual 16-bit timers, 8-channel 10-bit A/D converter, two UART/clock-synchronous serial interfaces, and a built-in oscillator supporting ceramic resonator or RC configuration.
For engineers reviewing the M37542F4GP#U0 datasheet, M37542F4GP#U0 pinout, M37542F4GP#U0 application, or M37542F4GP#U0 equivalent, this page delivers verified technical context, package-specific pin mapping (PRSP0036GA-A), real-world use cases, and validated alternative options - all grounded in Renesas' REJ03B0006-0303 specification document dated July 2008.
Technical Context
The M37542F4GP#U0 implements the 740-family instruction set with 71 base instructions and supports double-speed mode for 0.25 µs minimum instruction execution at 8 MHz. Its CPU includes 8-bit accumulator, dual 8-bit index registers (X/Y), 16-bit program counter, and 8-bit stack pointer with configurable zero-page or page-1 stack addressing.
On-chip peripherals include two independent serial I/O modules (SI/O1 and SI/O2) configurable as UART or clock-synchronous interfaces, four output compare channels, two input capture channels, and a watchdog timer. The A/D converter accepts eight analog inputs with internal reference voltage support via VREF pin and operates across the full 2.7–5.5 V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 740-family 8-bit CPU with 71 instructions and double-speed execution mode |
| Flash Memory | 16 KB + 4 KB (includes ID code area); enables field firmware updates without mask ROM dependency |
| RAM | 1024 bytes; sufficient for real-time control stacks, sensor buffers, and communication protocol state management |
| A/D Converter | 10-bit resolution × 8 channels; supports simultaneous sampling of temperature, voltage, and user interface sensors |
| Timers | Dual 8-bit timers + dual 16-bit timers; provides flexible PWM generation, interval timing, and input capture for motor control or encoder feedback |
| Serial Interfaces | Two 8-bit serial I/O modules; each configurable as UART or clock-synchronous master/slave for peripheral bridging or display control |
| Supply Voltage Range | 2.7–5.5 V (Flash version); compatible with standard 3.3 V and 5 V system rails without level-shifting |
| Operating Temperature | –20 to +85 °C; qualified for consumer and industrial ambient environments including kitchen appliances and office printers |
Pinout & Package
Package: PRSP0036GA-A - 36-pin plastic molded SSOP (0.8 mm pitch), RoHS-compliant, surface-mountable with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Primary power domain; VCC accepts 2.7–5.5 V; separate CNVSS for analog reference stability |
| XIN / XOUT | Crystal/resonator interface | Supports external ceramic resonator (4–8 MHz), quartz crystal, or RC network; on-chip oscillator reduces BOM count |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers and initializes peripheral control logic |
| P00–P07 | 8-bit programmable I/O port | LED drive capable; individually configurable pull-up and direction; CAP0/CMP0 functions support timing-critical signal conditioning |
| P10–P13 | 4-bit I/O port with serial functions | RxD1/TxD1/SCLK1/SRDY1 enable full-duplex UART or synchronous peripheral control (e.g., EEPROM, display driver) |
| P20–P27 | 8-bit analog/digital I/O port | AN0–AN7 serve as A/D inputs; P26/P27 present only in 36-pin packages; supports multi-sensor monitoring |
| P30–P37 | 8-bit I/O port with interrupt/capture | CAP1/CMP2/CMP3/INT0/INT1 enable wake-on-key, comparator-based thresholds, and external event triggering |
| VREF | Analog reference voltage input | Accepts external reference or connects to VCC; sets full-scale range for 10-bit A/D conversion accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Flash-based programmability | Enables post-manufacture firmware updates and eliminates mask ROM NRE costs for low-to-mid volume production |
| Integrated clock generator | Reduces external component count by supporting ceramic resonator, RC network, or crystal - no external oscillator IC required |
| High-drive LED ports | P0x pins support direct LED driving with software-selectable current boost, simplifying front-panel interface design |
| Dual serial I/O modules | Allows concurrent UART debugging and synchronous peripheral control (e.g., LCD + sensor bus) without resource contention |
| 8-channel 10-bit A/D | Provides sufficient resolution and channel count for closed-loop control of motors, heaters, and environmental sensors |
| Watchdog timer | 16-bit autonomous reset source prevents firmware lockup in unattended operation (e.g., washing machine cycles) |
Applications
| Home Appliance Control | Office Automation Device |
|---|---|
Use Scenario: Microcontroller in a microwave oven main control board managing cooking time, power level, keypad input, and safety interlocks. IC Role / Device Role / Timing Role: Central control unit executing real-time state machine, reading membrane keypad via P3x interrupts, driving display segments via P0x high-drive outputs, and sampling door switch/analog thermistor via A/D. Use Value: Integrated 10-bit A/D and LED drive eliminate external ADC and driver ICs; Flash memory allows regional firmware variants (e.g., EU vs. NA power cycle profiles). |
Use Scenario: Embedded controller in a multifunction printer handling paper feed sensing, toner level monitoring, and USB host interface coordination. IC Role / Device Role / Timing Role: System manager interfacing with optical encoder (P2x A/D), photointerrupter (P3x INT0), and USB bridge IC (P1x UART), while generating precise motor timing via 16-bit timer output compare. Use Value: Dual serial interfaces enable simultaneous USB debug logging and synchronous SPI communication with print head driver; 1024-byte RAM buffers scan data before USB transmission. |
| Factory Automation Sensor Node | Consumer Audio Equipment |
Use Scenario: Standalone temperature/humidity monitor in HVAC ductwork with local LED status and RS-485 Modbus output. IC Role / Device Role / Timing Role: Data acquisition node using P2x A/D for analog sensor inputs, P1x UART configured as RS-485 half-duplex master, and P0x for status LEDs. Use Value: On-chip oscillator ensures stable 9600-baud UART timing across temperature; Flash memory supports field calibration coefficient updates via Modbus write commands. |
Use Scenario: Volume/tone/bass control processor in a compact stereo receiver with rotary encoder input and digital potentiometer interface. IC Role / Device Role / Timing Role: Input conditioner capturing encoder pulses via P3x input capture, computing volume steps, and sending I²C-like bit-banged commands to DAC via P1x SCLK1/SRDY1. Use Value: Input capture hardware resolves 10 ms encoder bounce without CPU polling; 8-bit timers generate precise 44.1 kHz audio sample timing for auxiliary processing tasks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M37542F8GP#U0 | 32 KB + 4 KB Flash, same PRSP0036GA-A package and pinout; higher memory for complex UI or protocol stacks | Suitable when bootloader, OTA update capability, or larger RTOS footprint is required | Select M37542F8GP#U0 if firmware exceeds 16 KB user space or requires future feature expansion headroom |
| M37542M4GP#U0 | 16 KB Mask ROM (no reprogrammability), identical peripheral set and package; lower unit cost but fixed firmware | Appropriate for high-volume, mature products where firmware is finalized and field updates are unnecessary | Choose M37542M4GP#U0 for cost-sensitive, high-volume production with locked firmware and no need for post-deployment updates |
Compared with M37542F4GP#U0, M37542F8GP#U0 offers scalable Flash capacity for evolving feature sets, while M37542M4GP#U0 trades programmability for lower unit cost in stable, high-volume deployments - both share identical peripheral functionality and 36-pin SSOP compatibility.
Availability
M37542F4GP#U0 is available at Aetrix Electronics and suitable for home appliance control, office automation device development, and factory automation sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for M37542F4GP#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and consumer markets.
The 7542 Group - including M37542F4GP#U0 - was engineered for cost-effective, reliable embedded control in home and office equipment, emphasizing Flash flexibility, integrated analog peripherals, and low-system-component-count design.
FAQ
What is the maximum operating frequency supported by the M37542F4GP#U0?
The M37542F4GP#U0 supports up to 8 MHz oscillation frequency in double-speed mode, delivering a minimum instruction execution time of 0.25 µs. This timing assumes ceramic resonator operation at 4.5–5.5 V supply; at lower voltages (e.g., 2.7 V), max frequency reduces to 6.5 MHz per Renesas REJ03B0006-0303 specification.
Does the M37542F4GP#U0 support in-system programming (ISP)?
Yes, the M37542F4GP#U0 supports in-system programming via its on-chip boot ROM and dedicated serial interface. Renesas documents ISP procedures using the PG-FP5 programmer and Flash development toolkit, enabling firmware updates without removing the device from the PCB.
What package type is used for the M37542F4GP#U0?
The M37542F4GP#U0 uses the PRSP0036GA-A package: a 36-pin plastic molded SSOP with 0.8 mm pitch, RoHS-compliant, and thermally enhanced for surface-mount assembly. Pinout matches Figures 2 and 7 in the REJ03B0006-0303 datasheet.
How many A/D input channels does the M37542F4GP#U0 provide?
The M37542F4GP#U0 provides eight 10-bit A/D input channels (AN0–AN7) accessible via P20–P27. In the PRSP0036GA-A package, all eight channels are physically present and functional - unlike 32-pin variants which limit to six channels.
Is the M37542F4GP#U0 pin-compatible with other members of the 7542 Group?
Within the same package variant (e.g., PRSP0036GA-A), the M37542F4GP#U0 is pin-compatible with M37542F8GP#U0 and M37542M4GP#U0. All share identical pin functions, electrical characteristics, and peripheral register mapping - differing only in Flash/Mask ROM size and firmware capabilities.
M37542F4GP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- 740/38000
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 740
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- SIO, UART/USART
- Peripherals:
- POR, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 6x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
M37542F4GP#U0 FAQ
1.How can I place an order for M37542F4GP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for M37542F4GP#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 M37542F4GP#U0 reliable?
The price and inventory of M37542F4GP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M37542F4GP#U0 is usually 5 days.
3.What payment methods are accepted for M37542F4GP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M37542F4GP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M37542F4GP#U0?
M37542F4GP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M37542F4GP#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 M37542F4GP#U0?
For technical support, including M37542F4GP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M37542F4GP#U0 requirements.
6.How does Aetrix verify that M37542F4GP#U0 is sourced from the original manufacturer or authorized distributors?
All M37542F4GP#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 M37542F4GP#U0 meets industry standards.
7.What is the process for return or replacement of M37542F4GP#U0?
All M37542F4GP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with M37542F4GP#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 M37542F4GP#U0 part is unused and in its original packaging.
Return procedure for M37542F4GP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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