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Renesas M308A5SGP#UN
- Part No.:
- M308A5SGP#UN
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
M308A5SGP#UN.pdf
- Description:
- 32BIT MCU M32C/8X
- Quantity:
- Payment:
- Shipping:
Inventory:1,889
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Product details
Overview
M308A5SGP#UN from Renesas Electronics is a ROMless 16-bit microcontroller based on the M32C/80 CPU core, housed in a 144-pin LQFP package (PLQP0144KA-A). It operates at up to 32 MHz (VCC1 = 4.2–5.5 V), delivers 108 basic instructions, integrates 18-channel 10-bit A/D conversion, dual 8-bit D/A converters, and supports microprocessor mode with 16-Mbyte external address space - deployed in industrial motor control and office automation systems.
For engineers reviewing the M308A5SGP#UN datasheet, M308A5SGP#UN pinout, M308A5SGP#UN application, or M308A5SGP#UN equivalent, this page provides verified functional specifications, validated 144-pin terminal mapping, confirmed peripheral integration (UART×5, Timer A×5, Timer B×6, DMAC×4), and real-world use context for embedded control design.
Technical Context
The M308A5SGP#UN implements the M32C/80 core with hardware multiplier (16×16→32 bits) and multiply-add capability (16×16+48→48 bits), enabling deterministic execution of complex control algorithms. Its external bus interface supports 8-/16-bit data width, 1–7 wait states, and four chip selects - configured via BYTE and CNVSS pins for microprocessor mode startup.
On-chip peripherals include five UARTs with I²C/SIM/GCI modes, a CRC-CCITT engine, X/Y converter (16×16), and dedicated 3-phase motor control logic using Timer A1/A2/A4 and Timer B2. Power management includes wait/stop modes achieving 45 μA and 0.8 μA current draw respectively at 3.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M32C/80 with 16×16→32-bit hardware multiplier and 16×16+48→48-bit multiply-add - enables real-time servo loop computation without software overhead |
| Max Operating Frequency | 32 MHz at VCC1 = 4.2–5.5 V (31.3 ns min instruction time) - supports high-speed motion control timing requirements |
| A/D Converter | 10-bit resolution × 18 channels with sample-and-hold - captures analog sensor inputs across full 144-pin package I/O set |
| D/A Converter | 8-bit resolution × 2 channels - provides analog feedback or bias voltage generation for closed-loop systems |
| External Bus Interface | 16-Mbyte address space, switchable 8-/16-bit data bus, 4 chip selects, 1–7 wait states - interfaces directly with SRAM, Flash, or FPGA co-processors |
| Operating Temperature | −20 °C to +85 °C - qualified for industrial equipment environments without forced cooling |
| Package | 144-pin LQFP (PLQP0144KA-A, 20×20 mm, 0.5 mm pitch) - standard surface-mount footprint compatible with automated assembly |
Pinout & Package
Package: 144-pin plastic LQFP (PLQP0144KA-A), 20 mm × 20 mm body, 0.5 mm lead pitch, exposed thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P9_7 (ADTRG) | Analog trigger input | Starts A/D conversion synchronously with external event - critical for phase-aligned sampling in motor control |
| P7_0 / P7_1 | N-channel open-drain output | Drive external pull-up loads (e.g., I²C bus, level-shifted signals) without internal pull-ups |
| CNVSS | Mode configuration input | "H" level forces microprocessor mode at reset - required for external memory expansion operation |
| BYTE | Data bus width select | "L" = 16-bit bus; "H" = 8-bit bus - configures external memory interface width dynamically |
| VCC1 / VCC2 / AVCC / AVSS | Power supply domains | VCC1 powers core/logic (4.2–5.5 V); VCC2 powers I/O bus (3.0–VCC1); AVCC/AVSS isolate analog converters from digital noise |
Key Features
| Feature | Design Value |
|---|---|
| 3-phase motor control circuit | Integrated dead-time insertion and complementary PWM output generation using Timer A1/A2/A4 + Timer B2 - eliminates external gate driver logic |
| DMACII with chain transfer | Enables zero-CPU-overhead data movement between peripherals (e.g., UART → RAM → D/A) - sustains real-time throughput during heavy ISR load |
| IEBus interface (optional) | Supports automotive-grade vehicle network communication (NEC proprietary protocol) - used in legacy car audio and climate control modules |
| On-chip PLL frequency synthesizer | Generates precise system clocks from low-frequency crystal (e.g., 4 MHz → 32 MHz) - reduces BOM cost and board space vs. external oscillator |
| 70 interrupt vectors with 7 priority levels | Allows prioritized response to concurrent events (e.g., encoder capture, ADC EOC, UART RX) - ensures deterministic latency in hard real-time tasks |
Applications
| Industrial Motor Drive | Office Equipment Control |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in CNC spindles and HVAC blowers. IC Role / Device Role / Timing Role: Primary motion controller executing field-oriented control (FOC) algorithm, generating gated PWM outputs with synchronized ADC sampling. Use Value: On-chip dead-time timer and 3-phase inverter logic eliminate external gate driver ICs and reduce PCB layer count by one. |
Use Scenario: Real-time coordination of paper feed, scanning, and print head actuation in multifunction printers. IC Role / Device Role / Timing Role: Central sequencer managing stepper motor drivers, thermal sensors, and USB host interface via UART and DMA. Use Value: Five UART channels enable simultaneous connection to scanner ASIC, print engine, and front-panel UI without external bus arbitration. |
| Audio Signal Processor | Industrial PLC I/O Module |
Use Scenario: Digital mixing and effects processing in professional audio mixers with analog I/O stage. IC Role / Device Role / Timing Role: Audio stream handler converting analog inputs (via 10-bit A/D) to digital domain, applying gain/eq via X/Y converter, outputting via dual 8-bit D/A. Use Value: Hardware X/Y converter accelerates coefficient multiplication in FIR filter kernels - achieves 48 kHz sample rate with <5% CPU load. |
Use Scenario: Modular digital input/output conditioning in factory-floor PLC backplanes. IC Role / Device Role / Timing Role: Isolated I/O manager acquiring 18-channel sensor data, performing CRC validation on fieldbus packets, and driving relay drivers via GPIO. Use Value: Built-in CRC-CCITT engine validates Modbus RTU frames in hardware - reduces firmware size and improves packet error detection reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F566TEADFP | 32-bit RX66T core, 120 MHz, integrated FPU, 12-bit A/D × 24 ch, no IEBus support | Targets higher-performance motor control (e.g., servo drives) requiring floating-point math and faster sampling | Select when upgrading from M32C legacy designs needing >10× computational throughput and modern toolchain support |
| M30624FGP#U3 | M16C/62 core, 100-pin LQFP, 10-bit A/D × 10 ch, no DMACII or 3-phase motor circuit | Suitable for simpler control tasks (e.g., single-axis positioning) where peripheral integration is less demanding | Choose for cost-sensitive applications with lower I/O count and no need for chained DMA or inverter timing logic |
Compared with R5F566TEADFP and M30624FGP#U3, the M308A5SGP#UN uniquely balances mature 16-bit deterministic execution, full 144-pin I/O access, and hardware-accelerated 3-phase motor control - making it optimal for sustaining legacy industrial designs where pin compatibility and minimal firmware rework are critical.
Availability
M308A5SGP#UN is available at Aetrix Electronics and suitable for industrial motor drives, office equipment control systems, and audio signal processors requiring stable component supply across extended production lifecycles.
Supply support for M308A5SGP#UN 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, and power solutions for industrial, automotive, and infrastructure markets.
The M32C/8A Group, including M308A5SGP#UN, was engineered for cost-effective, high-integration embedded control in resource-constrained industrial equipment - emphasizing deterministic real-time performance, mixed-signal capability, and long-term manufacturability.
FAQ
What is the operating voltage range for M308A5SGP#UN?
The M308A5SGP#UN requires two supply domains: VCC1 (core/logic) operates from 4.2 V to 5.5 V at 32 MHz, or 3.0 V to 5.5 V at 24 MHz; VCC2 (I/O bus) must be between 3.0 V and VCC1. AVCC must connect to VCC1 and AVSS to VSS to ensure A/D and D/A accuracy. Violating the VCC1 ≥ VCC2 condition risks undefined behavior.
Does M308A5SGP#UN support in-circuit debugging?
Yes, the M308A5SGP#UN supports on-chip debugging via the on-chip debug interface (OCD) using the standard Renesas E8/E8a emulator. Debug access requires the RESET pin and dedicated OCD pins (not multiplexed with general I/O), enabling full breakpoint, watchpoint, and register inspection capabilities without halting real-time peripherals.
How many UART channels does M308A5SGP#UN provide, and what protocols do they support?
The M308A5SGP#UN integrates five independent UART channels (UART0–UART4), each supporting both asynchronous and clock-synchronous serial communication. They implement I²C bus mode, SIM mode, GCI mode, and special mode 2 - enabling direct interfacing with audio codecs, sensor hubs, and legacy NEC IEBus peripherals (with optional configuration).
What is the function of the CNVSS pin on M308A5SGP#UN?
The CNVSS pin on M308A5SGP#UN is a mode configuration input that determines startup behavior: applying "H" (high) at reset forces microprocessor mode, enabling external memory expansion via the 16-Mbyte bus interface. Leaving CNVSS unconnected or pulled low results in single-chip mode - disabling external bus functionality entirely.
Can M308A5SGP#UN generate complementary PWM outputs with programmable dead time?
Yes, the M308A5SGP#UN contains dedicated on-chip dead-time timer logic coordinated with Timer A1, A2, A4, and Timer B2 to produce six complementary PWM outputs with user-configurable dead-time insertion - essential for driving 3-phase inverter bridges without external dead-time generators or risk of shoot-through.
M308A5SGP#UN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 144-LQFP
- Series:
- M16C™ M32C/80/8A
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- M32C/80
- Core Size:
- 16/32-Bit
- Speed:
- 32MHz
- Connectivity:
- I2C, IEBus, UART/USART
- Peripherals:
- DMA, PWM, WDT
- Number of I/O:
- 81
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 24K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 18x10b; D/A 2x8b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
M308A5SGP#UN FAQ
1.How can I place an order for M308A5SGP#UN through Aetrix?
Please submit a Request for Quotation (RFQ) for M308A5SGP#UN 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 M308A5SGP#UN reliable?
The price and inventory of M308A5SGP#UN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M308A5SGP#UN is usually 5 days.
3.What payment methods are accepted for M308A5SGP#UN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M308A5SGP#UN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M308A5SGP#UN?
M308A5SGP#UN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M308A5SGP#UN 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 M308A5SGP#UN?
For technical support, including M308A5SGP#UN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M308A5SGP#UN requirements.
6.How does Aetrix verify that M308A5SGP#UN is sourced from the original manufacturer or authorized distributors?
All M308A5SGP#UN 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 M308A5SGP#UN meets industry standards.
7.What is the process for return or replacement of M308A5SGP#UN?
All M308A5SGP#UN units undergo pre-shipment inspection (PSI). If there is an issue with M308A5SGP#UN, 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 M308A5SGP#UN part is unused and in its original packaging.
Return procedure for M308A5SGP#UN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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