MC68HC908GR16MFA - 8MHz 8-bit HC08 MCU 16KB Flash 48-LQFP | NXP
料号： MC68HC908GR16MFA ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.8 | $68.00 |
| 100 | $6.05 | $605.00 |
| 500 | $5.4 | $2,700.00 |
| 1,000 | $4.85 | $4,850.00 |
MC68HC908GR16MFA 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/FLASH), working memory (RAM), and a set of peripherals such as timers, ADC, communication interfaces, and GPIO onto one semiconductor die. Within the broader hierarchy, the MC68HC908GR16MFA sits at: microcontroller -> 8-bit microcontroller -> HC08 family -> FLASH-based HC08 microcontrollers. It targets cost-sensitive, mid-complexity embedded designs where deterministic 8-bit performance is sufficient.
Key features include two 16-bit timer interface modules (TIM1 and TIM2), each with 2 channels supporting input capture, output compare, and pulse-width modulation (PWM). The device integrates an 8-channel, 10-bit successive-approximation analog-to-digital converter (ADC), enabling direct sensor interfacing without external components. Additional peripherals include a serial communications interface (SCI), serial peripheral interface (SPI), keyboard interrupt module, and a BREAK (BRK) module that supports single-breakpoint in-circuit debugging.
The HC08 core uses a von Neumann architecture with FLASH-based program storage and an integrated clock generator with user-programmable trim, eliminating the need for an external crystal in many applications. The 48-LQFP package exposes up to 39 general-purpose I/O pins and supports an internal bus speed up to 8 MHz with low-voltage operation down to 2.7 V, making it compatible with both 3.3 V and 5 V system rails.
Typical applications include white-goods and home-appliance motor control (washing machines, dishwashers), automotive body controllers, simple sensor conditioning nodes, HVAC damper and fan control, low-end consumer electronics, industrial timers and sequencers, and educational/development platforms for 8-bit embedded training.
When designing with this part, note that the HC08 instruction set is source-compatible with the older HC05 family, easing migration. Watch the maximum ADC clock and reference-voltage requirements, and ensure the internal oscillator trim is calibrated for UART baud-rate accuracy in SCI applications.
This page synthesizes distributor stock data, drop-in compatible alternatives, and practical design notes that go beyond the manufacturer datasheet to help engineers select, source, and deploy the MC68HC908GR16MFA in production designs.
直接替换替代料： MC68HC908GR16MFA ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC68HC908GR16MFA （相同外形与封装尺寸）.
快速对比工具——选择替代料号进行并排对比：
MC68HC908GR16CFAR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC68HC908GR8CFA
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.85 / 个
查看数据手册 →MC68HC908GR4CFA
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC68HC908GR32CFA
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC68HC908GR16MFA 最大额定值与电气特性
| Core | HC08 (8-bit) |
| Program Memory (FLASH) | 16 KB (16K x 8) |
| RAM | 1 KB |
| Maximum Bus Frequency | 8 MHz |
| Operating Voltage | 2.7 V to 5.5 V |
| ADC | 8-channel, 10-bit successive approximation |
| Timers | Two 16-bit TIM (TIM1 + TIM2), 2 channels each |
| Timer Functions | Input capture, output compare, PWM |
| Communication Interfaces | SCI (UART), SPI |
| GPIO | Up to 39 general-purpose I/O pins |
| 封装 | 48-LQFP (7x7 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +125C (automotive grade) |
| Debug Module | BREAK (BRK) single-breakpoint |
| RoHS 状态 | Compliant |
MC68HC908GR16MFA 引脚配置
| 引脚 1 | PTE0/TxD — GPIO port E bit 0 / SCI transmit data |
| 引脚 2 | PTE1/RxD — GPIO port E bit 1 / SCI receive data |
| 引脚 3 | PTE2 — GPIO port E bit 2 |
| 引脚 4 | PTE3 — GPIO port E bit 3 |
| 引脚 5 | PTE4 — GPIO port E bit 4 |
| 引脚 6 | PTE5 — GPIO port E bit 5 |
| 引脚 7 | PTE6 — GPIO port E bit 6 |
| 引脚 8 | PTE7 — GPIO port E bit 7 |
| 引脚 9 | VSS — Ground |
| 引脚 10 | VDD — Positive supply voltage |
| 引脚 11 | PTA0 — GPIO port A bit 0 / keyboard interrupt |
| 引脚 12 | PTA1 — GPIO port A bit 1 / keyboard interrupt |
| 引脚 13 | PTA2 — GPIO port A bit 2 / keyboard interrupt |
| 引脚 14 | PTA3 — GPIO port A bit 3 / keyboard interrupt |
| 引脚 15 | PTA4 — GPIO port A bit 4 / keyboard interrupt |
| 引脚 16 | PTA5 — GPIO port A bit 5 / keyboard interrupt |
| 引脚 17 | PTA6 — GPIO port A bit 6 / keyboard interrupt |
| 引脚 18 | PTA7 — GPIO port A bit 7 / keyboard interrupt |
| 引脚 19 | PTB0/AD0 — GPIO port B bit 0 / ADC channel 0 |
| 引脚 20 | PTB1/AD1 — GPIO port B bit 1 / ADC channel 1 |
| 引脚 21 | PTB2/AD2 — GPIO port B bit 2 / ADC channel 2 |
| 引脚 22 | PTB3/AD3 — GPIO port B bit 3 / ADC channel 3 |
| 引脚 23 | PTB4/AD4 — GPIO port B bit 4 / ADC channel 4 |
| 引脚 24 | PTB5/AD5 — GPIO port B bit 5 / ADC channel 5 |
| 引脚 25 | PTB6/AD6 — GPIO port B bit 6 / ADC channel 6 |
| 引脚 26 | PTB7/AD7 — GPIO port B bit 7 / ADC channel 7 |
| 引脚 27 | PTC0 — GPIO port C bit 0 / TIM1 channel 0 |
| 引脚 28 | PTC1 — GPIO port C bit 1 / TIM1 channel 1 |
| 引脚 29 | PTC2 — GPIO port C bit 2 / TIM2 channel 0 |
| 引脚 30 | PTC3 — GPIO port C bit 3 / TIM2 channel 1 |
| 引脚 31 | PTC4 — GPIO port C bit 4 |
| 引脚 32 | PTC5 — GPIO port C bit 5 |
| 引脚 33 | PTC6 — GPIO port C bit 6 |
| 引脚 34 | PTC7 — GPIO port C bit 7 |
| 引脚 35 | PTD0/SS — GPIO port D bit 0 / SPI slave select |
| 引脚 36 | PTD1/MISO — GPIO port D bit 1 / SPI MISO |
| 引脚 37 | PTD2/MOSI — GPIO port D bit 2 / SPI MOSI |
| 引脚 38 | PTD3/SPSCK — GPIO port D bit 3 / SPI clock |
| 引脚 39 | PTD4 — GPIO port D bit 4 |
| 引脚 40 | PTD5 — GPIO port D bit 5 |
| 引脚 41 | PTD6 — GPIO port D bit 6 |
| 引脚 42 | PTD7 — GPIO port D bit 7 |
| 引脚 43 | RST — External reset input (active low) |
| 引脚 44 | IRQ — External interrupt request |
| 引脚 45 | OSC1 — Crystal oscillator input |
| 引脚 46 | OSC2 — Crystal oscillator output |
| 引脚 47 | VSS — Ground |
| 引脚 48 | VDD — Positive supply voltage |
典型应用
MC68HC908GR16MFA 适用于 6 应用s: White Goods Motor Control, Automotive Body Controllers, HVAC Damper and Fan Control, Sensor Conditioning Nodes, Industrial Timers and Sequencers, Educational and Development Platforms.
White Goods Motor Control
Direct drive of small universal and BLDC motors in washing machines, dishwashers, and dryers. The MC68HC908GR16MFA's two 16-bit TIM modules deliver up to four PWM channels with input capture, sufficient for trapezoidal or sinusoidal commutation of single-phase or three-phase low-power motors. The 10-bit ADC samples back-EMF and current-sense signals at up to 1 MSPS, while the 8 MHz bus gives enough headroom for sensorless startup algorithms. The automotive-grade temperature range (-40C to +125C) supports under-cabinet thermal stress, and the 48-LQFP footprint allows a compact inverter PCB. Compared with switching to a Cortex-M0 part, the HC08 preserves existing firmware IP and reduces qualification cost on legacy platforms.
推荐
Automotive Body Controllers
Centralized control of door modules, seat controllers, mirror adjusters, and lighting clusters. The MC68HC908GR16MFA's 39 GPIO pins and 48-LQFP package provide enough I/O for multi-load switching with H-bridge or relay drivers, while the 8-channel ADC reads position sensors and current monitors. The integrated SCI supports LIN or K-Line communication with the body network, and the BREAK debug module enables efficient in-line firmware calibration during production. Operating voltage down to 2.7 V tolerates crank-dip transients, and the -40C to +125C grade matches AEC-Q100 environments. For new designs, NXP recommends migration to the S08AW family, but the HC08GR16 remains a proven platform for legacy platforms still in service.
推荐
HVAC Damper and Fan Control
BLDC or AC induction fan-speed and damper-position control in residential and light-commercial HVAC. The MC68HC908GR16MFA's two TIM modules generate the PWM pairs needed for triac-fired AC fan control or 3-phase BLDC commutation, and the 10-bit ADC reads temperature sensors, pressure transducers, and current shunts with sufficient resolution for closed-loop PID control. The 16 KB FLASH stores the control law plus a UI handler, while 1 KB RAM accommodates 32-bit intermediate variables and a small ring buffer for the SCI diagnostic port. The wide operating voltage (2.7 V to 5.5 V) accepts 24 VAC rectified supplies and 3.3 V logic rails. The 48-LQFP footprint eases layout into fan-control daughterboards.
推荐
Sensor Conditioning Nodes
Distributed analog front-end nodes that read sensors (temperature, pressure, humidity) and forward data over UART/SPI. The MC68HC908GR16MFA's 8-channel 10-bit ADC handles multi-sensor arrays without an external MUX, while the on-chip SPI or SCI provides the network uplink. The 8 MHz bus supports averaging and linearization routines for thermistor or RTD bridges in real time. The low 2.7 V minimum supply allows battery or energy-harvested power rails, and the small 48-LQFP footprint keeps the PCB compact. This architecture is common in industrial sensor hubs and building-automation I/O modules where the MCU both conditions and relays data.
推荐
Industrial Timers and Sequencers
Process timers, conveyor sequencers, and pump controllers in light-industrial machinery. The MC68HC908GR16MFA's two 16-bit timers with input capture and PWM support both the timing-element function and the actuator-drive function on the same chip, while the GPIO bank handles relay outputs, key-switches, and indicator LEDs. The 16 KB FLASH accommodates lookup tables for timing curves, and the 1 KB RAM supports a small task scheduler. The BREAK module simplifies bench calibration of timing parameters. The automotive-grade temperature rating tolerates factory-floor thermal stress up to +125C, making the part suitable for unconditioned enclosures.
推荐
Educational and Development Platforms
8-bit teaching boards, training kits, and HC08 development reference designs. The MC68HC908GR16MFA is widely supported by Freescale/NXP's CodeWarrior HC08 toolchain and the BDM (Background Debug Mode) pod, making it a standard teaching vehicle in 8-bit embedded courses. The 48-LQFP is breadboard-friendly via adapter boards, and the peripherals (ADC, timers, SCI, SPI) span the typical introductory curriculum: timers for PWM motor demos, ADC for sensor labs, and SCI for terminal I/O. The active third-party ecosystem of textbooks, application notes, and student projects preserves the part's pedagogical value even after EOL.
推荐
推荐产品汇总
工程参考数据： MC68HC908GR16MFA ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MC68HC908GR16CFAR | MC68HC908GR8CFA | MC68HC908GR4CFA | MC68HC908GR32CFA |
|---|---|---|---|---|---|
| Package | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| FLASH Memory | 16 KB | 16 KB | 8 KB (-50%) | 4 KB (-75%) | 32 KB (+100%) |
| RAM | 1 KB | 1 KB | 512 B (-50%) | 384 B (-62%) | 1.5 KB (+50%) |
| Maximum Bus Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Operating Temperature | -40C to +125C (automotive) | -40C to +85C (commercial) | -40C to +125C | -40C to +125C | -40C to +125C |
| ADC Channels | 8 channels, 10-bit | 8 channels, 10-bit | 8 channels, 10-bit | 4 channels, 10-bit | 8 channels, 10-bit |
| Lifecycle Status | Obsolete (legacy stock) | Obsolete (legacy stock) | Obsolete (legacy stock) | Obsolete (legacy stock) | Obsolete (legacy stock) |
关键差异点
- Identical 16KB FLASH at lower temperature grade for non-automotive SKUs （对比 MC68HC908GR16CFAR)
- Higher FLASH density in identical package （对比 MC68HC908GR32CFA)
- Cost-optimized 8KB variant for tight BOM targets （对比 MC68HC908GR8CFA)
设计说明
The MC68HC908GR16MFA operates from 2.7 V to 5.5 V. Add a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair (pins 10/9 and 48/47) and a bulk 10 uF tantalum or ceramic at the board supply input. The HC08 core draws approximately 15 mA at 8 MHz with all peripherals active, so budget headroom for in-rush during FLASH programming.
Do not rely on the internal oscillator alone for SCI baud-rate accuracy - the HC08 internal bus-frequency tolerance is typically +/-5 percent across temperature. For reliable SCI communication above 9600 baud, use an external crystal on OSC1/OSC2 (pins 45/46) or calibrate the internal trimpot. Watch the maximum ADC clock (1 MHz bus-derived); running it faster produces non-linear conversion results.
Place the BDM (Background Debug Mode) header at the board edge for production programming access. The RST pin (43) requires an external 10 kohm pull-up to VDD; the IRQ pin (44) needs a 4.7 kohm pull-up if not driven externally. Keep the OSC1/OSC2 traces short and guarded with a ground pour to avoid EMI coupling into the ADC inputs.
At 8 MHz full activity the MC68HC908GR16MFA dissipates approximately 80 to 120 mW. The 48-LQFP (7x7 mm) has a junction-to-ambient thermal resistance of approximately 70 C/W on a 2-layer board, so even at +125C ambient the die stays well below its 150C maximum junction. Estimated: with 100 mW dissipation, junction rise is approximately 7C above ambient - no heatsink required.
合规信息
RoHS compliant per NXP material declaration. AEC-Q100 qualified for automotive temperature grade -40C to +125C. Halogen-free status not explicitly stated in verified web data.