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Renesas M308B8FGGP#U5
- Part No.:
- M308B8FGGP#U5
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
M308B8FGGP#U5.pdf
- Description:
- 32BIT MCU M32C/8X
- Quantity:
- Payment:
- Shipping:
Inventory:1,308
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Product details
Overview
M308B8FGGP#U5 from Renesas Electronics is a 144-pin LQFP flash-based 16-bit MCU in the M32C/8B Group, featuring an M32C/80 CPU core, 256 KB + 8 KB Flash + 32 KB RAM, 32 MHz operation at 3.0–5.5 V, and integrated peripherals including five UARTs, 34-channel 10-bit ADC, dual 8-bit DAC, DMAC, and three-phase motor control timers - deployed in industrial PLCs and home appliance main controllers.
For engineers reviewing the M308B8FGGP#U5 datasheet, M308B8FGGP#U5 pinout, M308B8FGGP#U5 application, or M308B8FGGP#U5 equivalent, this page delivers verified package mapping (PLQP0144KA-A), confirmed 144-pin function assignments, real-world use cases in air conditioner inverter control and washing machine motor drives, and two validated alternative parts with documented functional and packaging differences.
Technical Context
The M308B8FGGP#U5 implements the M32C/80 core with 108 basic instructions and 31.3 ns minimum instruction execution time at 32 MHz. It supports single-chip, memory expansion, and microprocessor operating modes with switchable 8-/16-bit external bus interface and up to 7 wait states.
Its peripheral set includes Timer A (5×16-bit) with PWM and 2-phase encoder input, Timer B (6×16-bit) for pulse width/period measurement, on-chip dead-time timer for 3-phase inverter control, and DMACII supporting burst, chain, and calculation transfers triggered by any peripheral interrupt source.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M32C/80 with 16×16→32-bit multiplier and 16×16+48→48-bit multiply-add; enables efficient motor control math and signal processing. |
| Flash / RAM | 256 KB program Flash + 8 KB data Flash + 32 KB SRAM; supports field firmware updates and real-time data logging. |
| ADC / DAC | 10-bit resolution × 34 channels (single-chip mode); 8-bit × 2 channels; sufficient for multi-sensor feedback in HVAC and appliance systems. |
| Timers | Timer A ×5 (PWM, encoder), Timer B ×6 (pulse measurement), plus dedicated 3-phase inverter control using TA1/TA2/TA4/TB2; enables full-bridge gate drive timing. |
| Serial Interfaces | UART0–UART4 (5 channels), I²C, SIM, GCI, optional IEBus; supports multi-protocol communication with displays, sensors, and legacy subsystems. |
| Operating Range | −20°C to +85°C ambient; 3.0 V to 5.5 V supply; meets industrial temperature and wide-input-voltage requirements for embedded control. |
| Power Modes | Wait mode (110 μA @1 MHz), stop mode (4 μA); enables low-power standby in battery-backed or energy-conscious applications. |
Pinout & Package
Package: 144-pin LQFP (PLQP0144KA-A, 20 mm × 20 mm, 0.5 mm pitch). Pin functions validated per Renesas REJ03B0242-0100 Rev.1.00 (Nov 2009), Tables 1.6–1.8 and Figure 1.3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P9_6 (Pin 1) | ANEX1 / TXD4 / SDA4 / SRXD4 | Multi-function pin supporting UART4 transmit, I²C data, and analog external reference input - configurable per system needs. |
| P7_0 (Pin 37) | TA0OUT / TXD2 / SDA2 / SRXD2 | N-channel open-drain output; used for UART2/I²C bidirectional signaling or timer-driven PWM output with external pull-up. |
| P5_0 (Pin 65) | WRL / WR | Lower-byte write strobe for 16-bit external bus mode; enables byte-selective memory or peripheral writes without full-word access. |
| P10_0–P10_7 (Pins 141–133) | AN_0–AN_7 / KI0–KI3 | Eight analog inputs with key interrupt capability; allows simultaneous sensor monitoring (e.g., temperature, current) and button press detection. |
| VREF (Pin 142) | Analog reference voltage input | Provides stable reference for 10-bit ADC conversions; must be decoupled externally to ensure <±0.5% accuracy across operating range. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip dead-time timer | Hardware-enforced delay between complementary PWM outputs prevents shoot-through in 3-phase inverter bridges without software overhead. |
| DMACII burst transfer | Enables high-speed ADC data streaming to RAM without CPU intervention - critical for real-time current sampling in motor control loops. |
| IEBus interface (optional) | Supports legacy automotive audio and infotainment subsystem communication at 200 kbps, maintaining compatibility with NEC-era vehicle networks. |
| ROM code protect & ID check | Prevents unauthorized firmware readout and ensures boot authenticity - required for production-grade appliance security compliance. |
| On-chip debug + flash reprogram | Allows in-system debugging and field firmware updates via standard JTAG or serial interface - eliminates need for external programmers in manufacturing and service. |
Applications
| Air Conditioner Inverter Control | Washing Machine Drum Motor Drive |
|---|---|
Use Scenario: Real-time vector control of brushless DC compressor motor using space-vector PWM and current feedback. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, generating gatedrive signals with hardware dead-time, and managing thermal protection. Use Value: 34-channel ADC captures phase currents and temperatures simultaneously; 5×16-bit Timer A provides synchronized PWM with <100 ns jitter for precise torque regulation. | Use Scenario: Closed-loop speed and torque control of direct-drive drum motor during spin and wash cycles. IC Role / Device Role / Timing Role: Central motion controller interfacing with Hall sensors, driving 3-phase inverter, and communicating with UI via UART/I²C. Use Value: Integrated 3-phase motor control logic reduces external component count; 26 mA active current at 32 MHz enables responsive cycle timing without thermal throttling. |
| Industrial Programmable Logic Controller | Home Audio System Main Controller |
Use Scenario: Modular I/O handling with analog input conditioning, digital output switching, and fieldbus communication (IEBus or UART). IC Role / Device Role / Timing Role: Deterministic real-time executor of ladder logic with sub-millisecond scan times and deterministic interrupt latency. Use Value: 70 interrupt vectors and 7 priority levels enable prioritized response to safety-critical inputs; 16 MB address space supports modular firmware architecture. | Use Scenario: Multi-source audio routing, display management, remote control decoding, and power sequencing in AV receivers. IC Role / Device Role / Timing Role: System manager coordinating HDMI CEC, IR reception, LCD backlight PWM, and fan control via shared timer resources. Use Value: Five UART channels allow concurrent communication with tuner, DAC, DSP, and front-panel MCU; 8-bit DACs generate analog volume and tone control signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F566TEADFP | 32-bit RX66T core, 120 MHz, 512 KB Flash, 128 KB RAM, 24-channel 12-bit ADC; no IEBus support. | Higher performance for complex PMSM FOC; lacks legacy IEBus but adds CAN FD and more advanced PWM. | Select when upgrading from M32C/8B for higher computational throughput and modern industrial comms - requires PCB redesign due to 144-pin LQFP but different pinout. |
| M30624FGFP#U5 | M32C/30 series, 100-pin LQFP, 128 KB Flash + 8 KB data Flash + 16 KB RAM, 26-channel ADC, same M32C/80 core. | Smaller footprint and lower cost for less demanding applications; reduced I/O and peripheral count limits scalability. | Select for cost-sensitive, space-constrained designs where 34-channel ADC and 144-pin I/O are unnecessary - shares toolchain and debug infrastructure. |
Compared with R5F566TEADFP and M30624FGFP#U5, the M308B8FGGP#U5 delivers optimal balance of legacy interface support (IEBus), mature motor control peripherals, and industrial temperature grade in a proven 144-pin package - making it ideal for sustaining production of existing appliance and PLC platforms.
Availability
M308B8FGGP#U5 is available at Aetrix Electronics and suitable for industrial programmable logic controllers, air conditioner inverter modules, and washing machine main boards requiring stable component supply across extended product lifecycles.
Supply support for M308B8FGGP#U5 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 IoT markets.
The M32C/8B Group was designed specifically for high-reliability, cost-sensitive embedded control in home appliances and industrial equipment - emphasizing integrated motor control, mixed-signal precision, and long-term supply stability.
FAQ
What is the maximum operating frequency and supply voltage range for the M308B8FGGP#U5?
The M308B8FGGP#U5 operates at up to 32 MHz with a supply voltage range of VCC1 = 3.0 V to 5.5 V and VCC2 = 3.0 V to VCC1. This dual-supply configuration supports both 3.3 V and 5 V system interfaces while maintaining full CPU and peripheral functionality across the specified range.
Does the M308B8FGGP#U5 include on-chip debug and flash programming capability?
Yes, the M308B8FGGP#U5 includes on-chip debug and on-board flash reprogramming features. These capabilities allow full in-system debugging and firmware updates without requiring external programming hardware - essential for development iteration and field maintenance of products using the M308B8FGGP#U5.
How many analog-to-digital converter channels does the M308B8FGGP#U5 support, and what is their resolution?
The M308B8FGGP#U5 supports 34 channels of 10-bit analog-to-digital conversion in single-chip mode. This includes dedicated AN0_0–AN0_7, AN2_0–AN2_7, AN15_0–AN15_7, and AN_0–AN_7 inputs, all with sample-and-hold functionality - enabling simultaneous multi-sensor acquisition for motor control and environmental monitoring in the M308B8FGGP#U5.
What package type and pin count does the M308B8FGGP#U5 use?
The M308B8FGGP#U5 uses a 144-pin plastic LQFP package designated PLQP0144KA-A (20 mm × 20 mm, 0.5 mm pitch). This package is explicitly confirmed in Renesas documentation REJ03B0242-0100 for the M308B8FGGP variant and matches the pin assignments detailed in Figures 1.3 and Tables 1.6–1.8.
Is IEBus interface support built-in or optional for the M308B8FGGP#U5?
IEBus interface support is optional for the M308B8FGGP#U5 and requires configuration via Renesas sales office ordering - it is not enabled by default. When selected, it operates at 200 kbps and maintains compatibility with legacy NEC automotive audio networks, as noted in Table 1.2 footnote (1) and Table 1.4 footnote (1) of the M32C/8B Group datasheet.
M308B8FGGP#U5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 144-LQFP
- Series:
- M16C™ M32C/80/8B
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- M32C/80
- Core Size:
- 16/32-Bit
- Speed:
- 32MHz
- Connectivity:
- EBI/EMI, I2C, IEBus, UART/USART
- Peripherals:
- DMA, WDT
- Number of I/O:
- 121
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 34x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
M308B8FGGP#U5 FAQ
1.How can I place an order for M308B8FGGP#U5 through Aetrix?
Please submit a Request for Quotation (RFQ) for M308B8FGGP#U5 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 M308B8FGGP#U5 reliable?
The price and inventory of M308B8FGGP#U5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M308B8FGGP#U5 is usually 5 days.
3.What payment methods are accepted for M308B8FGGP#U5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M308B8FGGP#U5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M308B8FGGP#U5?
M308B8FGGP#U5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M308B8FGGP#U5 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 M308B8FGGP#U5?
For technical support, including M308B8FGGP#U5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M308B8FGGP#U5 requirements.
6.How does Aetrix verify that M308B8FGGP#U5 is sourced from the original manufacturer or authorized distributors?
All M308B8FGGP#U5 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 M308B8FGGP#U5 meets industry standards.
7.What is the process for return or replacement of M308B8FGGP#U5?
All M308B8FGGP#U5 units undergo pre-shipment inspection (PSI). If there is an issue with M308B8FGGP#U5, 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 M308B8FGGP#U5 part is unused and in its original packaging.
Return procedure for M308B8FGGP#U5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M308B8FGGP#U5 Tags
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