MC9S08RG32FGE - 8-bit HCS08 MCU 32KB Flash 44-LQFP | NXP
MPN： MC9S08RG32FGE ✗ 停產MC9S08RG32FGE 概覽
A microcontroller (MCU) is a single-chip computer containing a processor core, non-volatile program memory (Flash), volatile data memory (RAM), and a rich set of peripherals such as timers, ADC, communication interfaces, and GPIO. The HCS08 is NXP/Freescale's 8-bit CISC core, descended from the long-running HC05/HC08 architecture, designed for ultra-low power and deterministic interrupt response. MCUs sit at the bottom of the embedded hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor.
Key features of the MC9S08RG32FGE include an integrated 8-channel 10-bit ADC, multiple timers (TPM), an SCI (UART) serial interface, an SPI peripheral, and up to 39 GPIO pins depending on package configuration. The HCS08 core uses a von Neumann architecture with a 16-bit stack pointer and supports BCD arithmetic instructions for low-overhead decimal math. An on-chip clock generator with internal oscillator trimming reduces external component count.
The device is fabricated in 0.25 µm CMOS technology optimized for low-power operation, supporting multiple STOP and WAIT modes. Power-on reset, low-voltage detect, and watchdog timer peripherals are integrated. The internal bus structure supports single-cycle access to most registers, making the 8 MHz bus speed deliver competitive throughput for its class.
Typical applications include white goods and appliance control, motor and fan control front-ends, building automation (thermostats, sensors), industrial sensors, low-end security panels, and battery-powered metering. The combination of small Flash footprint (32KB) and low pin count suits cost-sensitive embedded designs.
When designing with this device, verify the latest reference manual revision and use NXP's CodeWarrior or newer MCUXpresso/Eclipse-based tools with the S08 toolchain. Place decoupling capacitors (100 nF and 4.7 µF) close to the VDD pins.
This page synthesizes distributor inventory, drop-in compatible alternatives, application notes, and design tips that go beyond what is captured in the manufacturer datasheet alone, supporting sourcing decisions for legacy and active designs.
直接替換替代品，適用於 MC9S08RG32FGE — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MC9S08RG32FGE （相同外形與佔位） — 差異在於 Package, Mounting Type, Core, Manufacturer, RAM.
MC9S08RG60FGE
✅ 直接替換聯絡詢價
查看資料表 →MC9S08RG32CFGE
✅ 直接替換聯絡詢價
查看資料表 →MC9S08RG32FGE-ND
✅ 直接替換📋 參考替代品（不在目錄中）
MC9S08RG32VGE
✅ 直接替換📋 參考替代品（不在目錄中）
S9S08RG32FGE
✅ 直接替換📋 參考替代品（不在目錄中）
MC9S08RG32FGE 最大額定值與電氣特性
| Core | HCS08 |
| 資料匯流排寬度 | 8 bit |
| 最大時脈頻率 | 8 MHz |
| Program Memory Size | 32 KB Flash |
| RAM Size | 2 KB |
| Package Type | 44-LQFP (10 mm × 10 mm) |
| 安裝類型 | Surface Mount |
| Terminal Pitch | 0.8 mm |
| 腳位數 | 44 |
| 工作電源電壓 | 2.1 V to 5.5 V |
| 工作溫度範圍 | -40 °C to +85 °C |
| ADC | 8-channel, 10-bit |
| Communication Interfaces | SCI (UART), SPI |
| GPIO Count | Up to 39 |
| Timers | TPM (Timer/PWM Module) |
| On-chip Oscillator | Yes (internal with trimming) |
| Watchdog Timer | Yes (COP) |
| Low Voltage Detect (LVD) | Yes |
| Power-on Reset | Yes |
MC9S08RG32FGE 44-lqfp (10 mm × 10 mm) 腳位配置指南
MC9S08RG32FGE（44-lqfp (10 mm × 10 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MC9S08RG32FGE.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC9S08RG32FGE 適用於 6 應用s: White Goods and Appliance Control, Industrial Sensor Signal Conditioning, Building Automation Thermostats, Low-End Security and Access Panels, Battery-Powered Metering and Data Loggers, Small Motor and Fan Control Front-Ends.
White Goods and Appliance Control
The MC9S08RG32FGE fits appliance main control boards where 32 KB of Flash comfortably holds keypad scan, display driving, motor timing, and safety-state logic. The HCS08 core's deterministic interrupt response - with single-cycle instruction fetch from Flash - keeps I/O latency predictable for washing-machine drum control, refrigerator compressor sequencing, and dishwasher pump switching. The integrated 8-channel ADC reads thermistor inputs for temperature regulation, while the TPM outputs drive triac/MOSFET gates. Operating from 2.1 V to 5.5 V aligns with both 3.3 V and 5 V appliance rails. Designers should reserve at least 25 percent Flash headroom for field firmware updates.
推薦
Industrial Sensor Signal Conditioning
With 8 channels of 10-bit ADC and an SPI port for digital sensor front-ends, the MC9S08RG32FGE is well-matched to industrial sensor-conditioning nodes that digitize 4-20 mA loops, thermocouples, and strain-gauge bridges. The HCS08's BCD arithmetic instructions simplify decimal engineering-unit conversion for process instrumentation. The 2 KB RAM is sufficient for moving-average filters and PID loops at modest update rates. The 44-LQFP footprint provides enough GPIO for relay drivers, optocouplers, and HMI LEDs while keeping PCB area under 1 cm².
推薦
Building Automation Thermostats
The MC9S08RG32FGE's 32 KB Flash and 2 KB RAM pair with its ADC and TPM channels to drive HVAC thermostat designs that sense room temperature, drive a relay or TRIAC for fan/cool/heat stages, and communicate via UART or SPI to a building controller. The HCS08 STOP and WAIT low-power modes help thermostats meet standby power budgets, and the wide 2.1 V to 5.5 V supply range simplifies both battery-backed and line-powered implementations. The 44-LQFP provides mechanical robustness for panel mounting.
推薦
Low-End Security and Access Panels
Security keypads and access-control panels run keypad scanning, RFID reader interfaces, lock-driver timing, and alarm-event logging - a workload that fits comfortably in 32 KB of Flash on the MC9S08RG32FGE. The HCS08's SCI (UART) talks to RFID/Wiegand readers and the SPI port interfaces to EEPROM for credential storage. The COP watchdog timer and low-voltage detect help satisfy safety-critical panel requirements. Designers should use the background debug mode for in-field firmware updates.
推薦
Battery-Powered Metering and Data Loggers
The MC9S08RG32FGE is a good fit for battery-powered metering and data-logging applications such as gas, water, or energy meters where the MCU spends most of its time in STOP mode and wakes periodically to sample sensors, average readings, and update non-volatile memory. The HCS08 STOP mode with internal oscillator disabled draws microamp-level currents, while the on-chip ADC and 32 KB Flash handle weeks of logged samples. The 44-LQFP provides mechanical stability in meter housings.
推薦
Small Motor and Fan Control Front-Ends
Brushless DC and stepper motor control in small appliances, fans, and pumps use the MC9S08RG32FGE's TPM (Timer/PWM Module) channels to generate commutation PWM and the ADC to read back-EMF or current-sense signals. The 32 KB Flash is enough for sensorless BLDC start-up algorithms and stall-detection state machines, and the 44-LQFP provides sufficient GPIO for Hall-sensor inputs, gate-driver enable lines, and tachometer feedback. Designers should use external gate drivers rather than the MCU's GPIO to drive FETs directly.
推薦
推薦產品摘要
工程參考資料，適用於 MC9S08RG32FGE — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MC9S08RG60FGE | MC9S08RG32CFGE | MC9S08RG32FGE-ND | MC9S08RG32VGE | S9S08RG32FGE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 44-LQFP (10x10) | 44-LQFP (10x10) - same | 44-LQFP (10x10) - same | 44-LQFP (10x10) - same | 44-LQFP (10x10) - same | 44-LQFP (10x10) - same |
| Core | HCS08 | HCS08 | HCS08 | HCS08 | HCS08 | HCS08 |
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Flash Program Memory | 32 KB | 60 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Operating Supply Voltage | 2.1 V to 5.5 V | 2.1 V to 5.5 V | 2.1 V to 5.5 V | 2.1 V to 5.5 V | 2.1 V to 5.5 V | 2.1 V to 5.5 V |
| Temperature Grade | Industrial (-40C to +85C) | Industrial | Extended | Industrial | Automotive (-40C to +105C) | Industrial |
| ADC | 8-ch, 10-bit | 8-ch, 10-bit | 8-ch, 10-bit | 8-ch, 10-bit | 8-ch, 10-bit | 8-ch, 10-bit |
主要差異化特點
- Highest Flash capacity in the S08RG family at the original release (對比MC9S08RG60FGE)
- Industrial temperature grade variant widely available (對比MC9S08RG32VGE)
- NXP-branded successor offering identical silicon (對比S9S08RG32FGE)
設計說明
Place a 100 nF ceramic decoupling capacitor within 3 mm of each VDD pin and a 4.7 µF bulk capacitor on the main supply rail. The MC9S08RG32FGE's internal voltage regulator generates the 1.8 V core supply; respect the VDD ramp rate (1 V/ms minimum, 250 V/ms maximum per the datasheet) to ensure clean power-on reset behavior.
Keep the Background Debug Mode (BDM) header accessible during prototype bring-up. The BDM pins (BKGD, RESET, VDD, GND) share general-purpose I/O functions, so plan the layout to keep the debug header reachable without removing the MCU. Route the external reset circuit (4.7 kΩ pull-up on RESET with optional capacitor) close to the IC.
Do not exceed 5.5 V on any pin; the HCS08 I/O structure is not 5 V tolerant on a 3.3 V supply configuration. When migrating code from Freescale HC08 to HCS08, remember that the HCS08 stack pointer is 16 bits, and that the HCS08 uses the new SBC/ROLX/ROLR instructions - older HC08-only code must be recompiled. Verify oscillator trim values against your application's temperature and voltage corner.
The MC9S08RG32FGE in 44-LQFP does not require a heatsink. Junction temperature is dominated by ambient and self-heating from GPIO toggling. For designs operating at +85 C ambient with all GPIO pins driving 20 pF loads at 8 MHz, typical self-heating is well below 1 W. The LQFP's exposed center pad (if present) should be soldered to a ground copper pour for thermal relief and ground integrity.
合規資訊
RoHS, REACH, lead-free, and halogen-free status are not explicitly stated in the verified distributor listings for this NRND part. For new production designs, contact NXP directly for the latest compliance documentation. The part is not AEC-Q100 qualified - automotive designs should use the VGE suffix variant or the S08AW/S08QE automotive families.
