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Renesas M37544G2AGP#U0
- Part No.:
- M37544G2AGP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
M37544G2AGP#U0.pdf
- Description:
- IC MCU 8BIT 8KB QZROM 32LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
M37544G2AGP#U0 from Renesas Electronics is an 8-bit CMOS microcontroller based on the 740 family core, featuring 8 KB QzROM, 256 bytes RAM, six-channel 8-bit A/D converter, dual 8-bit timers, one 16-bit timer, UART/clock-synchronized serial interface, and built-in oscillator supporting ceramic, quartz, RC, or on-chip clock sources. It targets cost-sensitive embedded control in home appliances and office automation.
For engineers reviewing the M37544G2AGP#U0 datasheet, M37544G2AGP#U0 pinout, M37544G2AGP#U0 application, or M37544G2AGP#U0 equivalent, key selection criteria include its 32-pin LQFP (PLQP0032GB-A) package, 0.25 µs minimum instruction cycle at 8 MHz double-speed mode, –20 to 85 °C industrial temperature range, and LED-driving I/O capability on ports P0 and P3.
Technical Context
The M37544G2AGP#U0 implements the standard 740-family instruction set with 71 basic instructions, supports index addressing via X/Y registers, and uses an 8-bit accumulator with 16-bit program counter and 8-bit stack pointer. Its CPU mode register (CPUM at 003B₁₆) controls stack page selection, oscillation mode (ceramic/quartz vs. RC vs. on-chip), and clock division ratio (1/1, 1/2, 1/8, or on-chip).
Interrupt handling includes 12 independent sources with dedicated vectors, priority-controlled servicing, and BRK instruction support. The A/D converter accepts inputs from P20–P25 (AN0–AN5), referenced to VREF, and operates with 8-bit resolution across all six channels without external sample-and-hold circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 740-family 8-bit CPU with 71 instructions, 0.25 µs min instruction time at 8 MHz double-speed mode |
| Memory | 8 KB QzROM (8062 bytes user space), 256 bytes RAM, zero-page and special-page memory mapping |
| Timers | Dual 8-bit timers (Timer X, Timer 1), one 16-bit timer (Timer A), and 16-bit watchdog timer |
| A/D Converter | 8-bit resolution × 6 channels (P20–P25), VREF-referenced, no external S/H required |
| Serial Interface | 8-bit UART or clock-synchronized serial I/O (SI/O), configurable via P10/RXD, P11/TXD, P12/SCLK, P13/SRDY |
| Power Supply | 1.8–5.5 V operation with on-chip oscillator; 2.2–5.5 V at 1 MHz RC/ceramic; 4.5–5.5 V at 8 MHz ceramic in double-speed mode |
| Operating Temperature | –20 to +85 °C, qualified for Standard-grade applications including home appliances and office equipment |
Pinout & Package
Package: PLQP0032GB-A - 32-pin, 0.8 mm pitch, plastic molded LQFP, RoHS-compliant, surface-mountable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Primary power domain (1.8–5.5 V); VSS is digital ground reference |
| XIN / XOUT | Crystal/resonator interface | Accepts ceramic resonator, quartz crystal, or RC network; XIN also accepts external clock input |
| RESET | Active-low reset input | Asynchronous reset assertion; internal pull-up ensures reliable deassertion on power-up |
| P00/CNTR1 | Programmable I/O / Timer counter input | LED-driving capable port pin; doubles as 8-bit timer X counter input |
| P03/TXOUT | Programmable I/O / UART transmit output | Configurable as general-purpose output or UART serial data output (TXOUT) |
| P10/RXD, P11/TXD | UART receive/transmit pins | Full-duplex UART interface; TTL/CMOS level compatible; P10 and P12 support level switching |
| P20–P25/AN0–AN5 | Analog input channels | 6-channel single-ended A/D inputs referenced to VREF; share physical pins with port P2 |
| P34/INT1, P37/INT0 | External interrupt inputs | Edge-triggered interrupt sources; support wake-up from standby via key-on detection |
Key Features
| Feature | Design Value |
|---|---|
| On-chip clock generation | Supports ceramic resonator, quartz crystal, RC network, or low-power on-chip oscillator - eliminates need for external timing components in many designs |
| LED-driving I/O ports | P0 and P3 provide high-current sink/source capability, enabling direct LED drive without external drivers in appliance UIs |
| Flexible interrupt system | 12 independent interrupt sources with dedicated vectors and programmable priority enable responsive real-time control |
| Low-voltage operation | Functional down to 1.8 V with on-chip oscillator allows battery-powered or energy-efficient operation in portable appliances |
| Code protection | ROM code protect address (FFD4₁₆) enables hardware-level read/write lock via "00₁₆" write - prevents unauthorized firmware extraction |
Applications
| Home Appliance Control | Office Automation Device |
|---|---|
|
Use Scenario: Microcontroller in washing machine main control board managing motor sequencing, water valve actuation, and user interface feedback. IC Role / Device Role / Timing Role: Central 8-bit controller executing real-time state machine logic, sampling analog sensor signals (temperature, water level), and driving LEDs/display segments via P0/P3 ports. Use Value: Integrated A/D, timers, and LED-driving I/O reduce BOM count and PCB area; 8 KB ROM accommodates full wash-cycle firmware with diagnostics. |
Use Scenario: Embedded controller in multifunction printer managing paper feed, toner sensing, and panel button response. IC Role / Device Role / Timing Role: System supervisor coordinating stepper motor timing (via 16-bit Timer A), reading optical sensors (P20–P25), and handling UART-based host communication (P10/P11). Use Value: Dual-speed clock modes allow low-power standby (on-chip oscillator at 1.8 V) and high-speed active operation (8 MHz ceramic), optimizing energy use. |
| Industrial Panel Meter | Consumer Remote Control Hub |
|
Use Scenario: Front-end controller in DIN-rail mounted panel meter acquiring analog process signals and displaying values on segmented LCD. IC Role / Device Role / Timing Role: Signal acquisition node converting 6-channel analog inputs (P20–P25) with internal VREF reference, performing linearization in firmware, and updating display via P0/P3. Use Value: On-chip A/D eliminates external ADC IC; wide 1.8–5.5 V supply range simplifies power design across varied industrial rails. |
Use Scenario: Central coordinator in smart home remote hub aggregating IR commands, BLE status, and local button presses. IC Role / Device Role / Timing Role: Low-power manager using key-on wakeup (P34/P37) to exit standby, decoding IR pulses via CNTR1 (P00), and relaying commands via UART to host MCU. Use Value: Built-in watchdog timer and reset circuit ensure robust recovery from transient faults; compact 32-pin LQFP eases layout in space-constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M37544G2ASP | Same core, ROM, RAM, peripherals; differs only in PRDP0032BA-A (32-pin SDIP) package instead of PLQP0032GB-A (LQFP) | Through-hole assembly preferred; less suitable for automated SMT lines or high-density boards | Select M37544G2ASP only when through-hole mounting or legacy socket compatibility is required. |
| RL78/G13 R5F100LEA | Successor 16-bit RL78 core; 32 KB flash, 4 KB RAM, enhanced peripherals (10-bit A/D, LIN, DMA), but higher cost and code migration effort | Targets next-generation designs requiring longer lifecycle, higher precision, or automotive qualification (AEC-Q100) | Choose RL78/G13 only when upgrading functionality justifies redesign; M37544G2AGP#U0 remains optimal for cost- and size-constrained legacy-compatible systems. |
Compared with M37544G2ASP, the M37544G2AGP#U0 offers identical functionality in a modern surface-mount LQFP package, improving thermal performance and assembly yield. Against RL78/G13, it delivers lower system cost and simpler firmware maintenance for stable, volume-produced appliance control where 8-bit performance suffices.
Availability
M37544G2AGP#U0 is available at Aetrix Electronics and suitable for home appliance control, office automation device development, and industrial panel meter applications requiring stable component supply and long-term manufacturing continuity.
Supply support for M37544G2AGP#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 consumer markets.
The 7544 Group was designed specifically for cost-effective, low-power embedded control in home and office equipment, emphasizing integrated peripherals, flexible clocking, and robust I/O drive capability - aligning with Renesas' focus on application-optimized MCUs.
FAQ
What is the maximum operating frequency of the M37544G2AGP#U0 and under what conditions?
The M37544G2AGP#U0 achieves a maximum oscillation frequency of 8 MHz in double-speed mode with ceramic or quartz crystal, requiring a 4.5–5.5 V supply. At 4 MHz, operation extends down to 4.0 V; at 2 MHz, down to 2.4 V; and at 1 MHz, down to 2.2 V. With the on-chip oscillator enabled, full 1.8–5.5 V range is supported, though max frequency drops to approximately 1 MHz.
Does the M37544G2AGP#U0 support in-circuit debugging or programming?
The M37544G2AGP#U0 does not integrate on-chip debug circuitry. Programming is performed via serial programmer using the QzROM interface, with ROM code protection controlled by writing "00₁₆" to address FFD4₁₆. For development, Renesas provides emulator variants like M37544RSS (42S1M package) that support real-time debugging and trace.
How many analog input channels does the M37544G2AGP#U0 have, and what are their pin assignments?
The M37544G2AGP#U0 features six 8-bit analog input channels assigned to P20/AN0, P21/AN1, P22/AN2, P23/AN3, P24/AN4, and P25/AN5 - all located on port P2. These share physical pins with digital I/O functions and require VREF to be externally supplied for accurate conversion.
Can the M37544G2AGP#U0 drive LEDs directly, and which pins support this function?
Yes, the M37544G2AGP#U0 can drive LEDs directly. Ports P0 (P00–P07) and P3 (P30–P37) are designed with high-current sink/source capability, explicitly noted in the datasheet for LED-driving applications. Pins such as P00, P01–P07, P30–P34, and P37 support this function without external drivers.
What is the purpose of the CNVSS pin on the M37544G2AGP#U0, and how must it be connected?
The CNVSS pin on the M37544G2AGP#U0 is the analog ground reference for the A/D converter and must be connected to VSS (digital ground) with low-impedance routing. It is not a separate analog ground plane but serves as a dedicated return path to minimize noise coupling into the A/D conversion circuitry during sampling.
M37544G2AGP#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:
- WDT
- Number of I/O:
- 25
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- QzROM
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 6x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
M37544G2AGP#U0 FAQ
1.How can I place an order for M37544G2AGP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for M37544G2AGP#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 M37544G2AGP#U0 reliable?
The price and inventory of M37544G2AGP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M37544G2AGP#U0 is usually 5 days.
3.What payment methods are accepted for M37544G2AGP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M37544G2AGP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M37544G2AGP#U0?
M37544G2AGP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M37544G2AGP#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 M37544G2AGP#U0?
For technical support, including M37544G2AGP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M37544G2AGP#U0 requirements.
6.How does Aetrix verify that M37544G2AGP#U0 is sourced from the original manufacturer or authorized distributors?
All M37544G2AGP#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 M37544G2AGP#U0 meets industry standards.
7.What is the process for return or replacement of M37544G2AGP#U0?
All M37544G2AGP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with M37544G2AGP#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 M37544G2AGP#U0 part is unused and in its original packaging.
Return procedure for M37544G2AGP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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