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Renesas M37547G4FP#U0
- Part No.:
- M37547G4FP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 36-SOP (0.330", 8.40mm Width)
- Datasheet:
-
M37547G4FP#U0.pdf
- Description:
- IC MCU 8BIT 16KB QZROM 36SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,222
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Product details
Overview
M37547G4FP#U0 from Renesas Electronics is a single-chip 8-bit CMOS microcontroller in the 7547 Group, featuring QzROM, built-in power-on reset and low-voltage detection circuits, and an on-chip oscillator supporting ceramic, RC, or quartz-crystal clock sources. It delivers 71 basic instructions, 0.25 µs minimum instruction execution time at 8 MHz (double-speed mode), 16 KB ROM, 512 bytes RAM, 10-bit 8-channel A/D converter, and dual 16-bit timers - deployed in industrial control panels requiring deterministic real-time response and LED-driven HMI interfaces.
For engineers reviewing the M37547G4FP#U0 datasheet, M37547G4FP#U0 pinout, M37547G4FP#U0 application, or M37547G4FP#U0 equivalent, key selection criteria include its 36-pin SSOP package with LED-drive-capable I/O ports (P0–P3), voltage range flexibility (1.8–5.5 V at on-chip oscillation), integrated watchdog timer, and functional compatibility with the 7542 Group for legacy migration paths.
Technical Context
The M37547G4FP#U0 implements the 740-family CPU architecture with 8-bit accumulator, dual 8-bit index registers (X/Y), 8-bit stack pointer, and 16-bit program counter. Its memory map includes 16 KB QzROM (user area: 16,254 bytes), 512-byte RAM, zero-page SFR region, and function-set ROM enabling immediate peripheral activation post-reset.
It integrates dual 8-bit and dual 16-bit timers with 4-channel output compare and 2-channel input capture, two UART/clock-synchronous serial interfaces, and an 8-channel 10-bit A/D converter referenced to VREF. Clock generation supports four operating modes - double-speed, high-speed, middle-speed, and on-chip oscillator - selected via CPU mode register (CPUM) at address 003B16.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 740-family 8-bit CPU with accumulator, X/Y index registers, and 16-bit PC |
| ROM Size | 16 KB QzROM (16,254 bytes user-programmable space) |
| RAM Size | 512 bytes, including zero-page SFR allocation and stack support |
| Instruction Execution | 0.25 µs min. at 8 MHz in double-speed mode; 71 basic instructions |
| A/D Converter | 10-bit resolution across 8 analog input channels (AN0–AN7) |
| Timers | Two 8-bit + two 16-bit timers; 4 output compare, 2 input capture channels |
| Serial Interfaces | Two 8-bit serial I/O modules supporting UART or clock-synchronous protocols |
| Operating Voltage | 1.8–5.5 V when using on-chip oscillator; supports wide supply adaptability |
Pinout & Package
Package: PRSP0036GA-B - 36-pin plastic molded SSOP (0.8 mm pitch), RoHS-compliant, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vcc / Vss | Power supply / Ground | Primary power domain (1.8–5.5 V); CNVss provides separate analog ground reference |
| XIN / XOUT | Crystal/resonator interface | Supports ceramic resonator, quartz crystal, RC network, or external clock; XIN tied to Vcc enables on-chip oscillator |
| RESET | Active-low reset input | Asynchronous reset trigger; internal power-on reset circuit ensures reliable initialization |
| P00–P07 | Programmable I/O port | 8-bit CMOS port with LED drive capability, pull-up control, and alternate functions (CAP0, CMP0–CMP1, TXOUT) |
| P10–P13 | Programmable I/O port | 5-bit port with UART/SIO1 functions (RxD1/TxD1/SCLK1/SRDY1) and CAP0 input capture |
| P20–P27 | Analog input / I/O | 8-channel A/D converter inputs (AN0–AN7); also serve as general-purpose I/O |
| P30–P37 | Programmable I/O port | 8-bit port with interrupt inputs (INT0/INT1), comparator outputs (CMP2/CMP3), and LED drive capability |
Key Features
| Feature | Design Value |
|---|---|
| QzROM Memory Type | One-time programmable ROM enabling secure firmware storage without external EPROM |
| Built-in Power-on Reset | Eliminates need for external POR circuitry; ensures deterministic startup sequence |
| Low-Voltage Detection | Monitors Vcc and triggers reset or interrupt below configurable threshold - critical for brown-out resilience |
| On-Chip Oscillator | Reduces BOM count and board space; enables operation down to 1.8 V with no external timing components |
| LED-Drive-Capable I/O | Software-selectable high-drive mode on P0/P3 ports simplifies direct LED interface without current-limiting resistors |
| Function Set ROM | Pre-configures peripheral enablement and security settings (e.g., ROM code protect at FFDB16) immediately after reset |
Applications
| Industrial Control Panel | Appliance Motor Controller |
|---|---|
Use Scenario: Standalone HMI panel managing temperature setpoints, relay sequencing, and status LEDs in HVAC systems. IC Role / Device Role / Timing Role: Central controller executing real-time logic, scanning 8 analog sensor inputs (thermistors), driving 16 LEDs via P0/P3 ports, and communicating via UART to display module. Use Value: Integrated A/D, LED drive, and low-voltage detection reduce component count by ≥4 discrete ICs while ensuring robust operation across 2.2–5.5 V line fluctuations. |
Use Scenario: Compact washing machine mainboard controlling BLDC motor commutation, water level sensing, and user interface feedback. IC Role / Device Role / Timing Role: System-on-chip managing PWM generation (via timer output compare), analog pressure/temperature acquisition, and front-panel LED indicators with synchronized blink patterns. Use Value: Dual 16-bit timers with 4-channel output compare provide precise phase-aligned PWM signals; on-chip oscillator eliminates crystal cost and layout sensitivity. |
| Energy Meter Interface Module | Factory Automation Sensor Node |
Use Scenario: DIN-rail mounted metering add-on board aggregating pulse inputs from utility meters and reporting via RS-485. IC Role / Device Role / Timing Role: Data concentrator capturing edge-triggered pulses (via INT0/INT1), converting analog auxiliary inputs (voltage/current), and formatting UART frames for Modbus RTU transmission. Use Value: 18 interrupt sources with 16 vectors allow concurrent handling of pulse counting, A/D conversion completion, and UART receive events without polling overhead. |
Use Scenario: Battery-powered vibration sensor node performing periodic ADC sampling, local threshold detection, and wake-on-event UART transmission. IC Role / Device Role / Timing Role: Low-power monitoring controller using stop mode with key-on wakeup (P34–P37), internal LVD for battery undervoltage alert, and on-chip oscillator for fast wake-up timing. Use Value: 1.8 V minimum operating voltage and built-in LVD enable reliable operation down to single-cell Li-ion (3.0 V nominal) with graceful shutdown at 2.2 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M37547G2FP#U0 | 8 KB ROM, 384 bytes RAM; identical pinout and peripheral set | Suitable for simpler firmware with ≤8 KB code footprint and reduced data buffering needs | Select when application size fits within 8 KB and cost sensitivity outweighs future firmware scalability |
| UPD78F0503GC-GAH-AX | 78K0R/I3+ core, 32 KB Flash, 2 KB RAM, 10-bit 12-channel A/D, SPI/I²C/UART | Requires PCB redesign (48-pin LQFP); supports firmware updates and richer communication stacks | Choose for new designs needing field-upgradable code, expanded peripherals, or higher integration density |
Compared with M37547G4FP#U0, the M37547G2FP#U0 offers identical functionality at lower memory capacity and cost, while the UPD78F0503GC-GAH-AX provides modern Flash-based programmability and expanded I/O at the expense of pin compatibility and increased BOM complexity.
Availability
M37547G4FP#U0 is available at Aetrix Electronics and suitable for industrial control panels, appliance motor controllers, energy meter interface modules, and factory automation sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for M37547G4FP#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 industrial, automotive, and infrastructure markets.
The 7547 Group targets cost-sensitive, high-reliability embedded applications where ROM-based firmware, integrated analog peripherals, and minimal external components are essential - particularly in white goods, building controls, and instrumentation.
FAQ
What is the ROM type and capacity of the M37547G4FP#U0?
The M37547G4FP#U0 features 16 KB of QzROM (quartz-programmed ROM), with 16,254 bytes available for user program storage. This one-time programmable memory includes a dedicated function set ROM area for configuring peripheral enablement and ROM code protection at address FFDB16. The M37547G4FP#U0 does not support in-system reprogramming.
Does the M37547G4FP#U0 support external crystal oscillators?
Yes, the M37547G4FP#U0 supports external ceramic resonators or quartz crystals connected between XIN and XOUT pins. It also supports RC networks (XIN–XOUT shorted with external R/C), external clock injection (XIN only), and on-chip oscillator operation (XIN tied to Vcc). Mode selection is controlled via the CPU mode register (CPUM) at address 003B16.
How many analog input channels does the M37547G4FP#U0 have, and what is their resolution?
The M37547G4FP#U0 integrates an 8-channel, 10-bit successive-approximation A/D converter. Inputs AN0–AN7 map directly to P20–P27 pins. Conversion uses an external reference voltage applied to the VREF pin, and results are accessible via dedicated SFR registers. The M37547G4FP#U0 does not support differential input or internal Vcc referencing.
What are the key differences between the M37547G4FP#U0 and M37547G2FP#U0?
The M37547G4FP#U0 and M37547G2FP#U0 share identical pinout, package (PRSP0036GA-B), and peripheral set, but differ in memory: M37547G4FP#U0 has 16 KB ROM and 512 bytes RAM, while M37547G2FP#U0 has 8 KB ROM and 384 bytes RAM. Both use QzROM and include function set ROM, power-on reset, and low-voltage detection circuits.
Can the M37547G4FP#U0 operate at voltages below 2.4 V?
The M37547G4FP#U0 supports 1.8–5.5 V operation only when using the on-chip oscillator mode. In ceramic, RC, or external clock modes, the minimum supply is 2.2 V (at 1 MHz) or higher depending on frequency and speed mode. Operation below 1.8 V is not supported under any configuration, and the built-in low-voltage detection circuit can be configured to assert reset or interrupt at user-defined thresholds.
M37547G4FP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 36-SOP (0.330", 8.40mm Width)
- 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:
- LVD, POR, WDT
- Number of I/O:
- 29
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- QzROM
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
M37547G4FP#U0 FAQ
1.How can I place an order for M37547G4FP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for M37547G4FP#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 M37547G4FP#U0 reliable?
The price and inventory of M37547G4FP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M37547G4FP#U0 is usually 5 days.
3.What payment methods are accepted for M37547G4FP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M37547G4FP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M37547G4FP#U0?
M37547G4FP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M37547G4FP#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 M37547G4FP#U0?
For technical support, including M37547G4FP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M37547G4FP#U0 requirements.
6.How does Aetrix verify that M37547G4FP#U0 is sourced from the original manufacturer or authorized distributors?
All M37547G4FP#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 M37547G4FP#U0 meets industry standards.
7.What is the process for return or replacement of M37547G4FP#U0?
All M37547G4FP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with M37547G4FP#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 M37547G4FP#U0 part is unused and in its original packaging.
Return procedure for M37547G4FP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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