MC908GR16ACFJE - 8-Bit HC08 MCU, 16KB Flash, 32-LQFP | NXP
MPN: MC908GR16ACFJE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.85 | $7.85 |
| 10 | $6.95 | $69.50 |
| 100 | $6.1 | $610.00 |
| 500 | $5.45 | $2,725.00 |
| 1,000 | $4.92 | $4,920.00 |
MC908GR16ACFJE Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a mix of analog and digital peripherals. The 8-bit HC08 architecture is an enhanced successor to the 68HC05 family and belongs to the broader category of microcontrollers -> microprocessors -> embedded processors -> semiconductors. Compared with 32-bit Cortex-M parts, 8-bit HC08 devices offer simpler instruction sets, lower cost, and lower power, which makes them attractive in motor control, appliance, and white-goods designs where code density and BOM cost matter more than raw MIPS.
Key features of the MC908GR16ACFJE include 16 KB of FLASH, an 8 MHz bus clock, an on-chip oscillator, multiple timers, an A/D converter, and serial communication peripherals. The 32-LQFP package provides 32 pins routed through gull-wing leads for standard SMT assembly. The industrial temperature grade (-40C to +85C, per package suffix conventions) makes the part suitable for non-automotive harsh environments.
Technically, the device integrates a CPU08 core with a hardware multiplier option and a defined memory map separating FLASH, RAM, and I/O registers. FLASH supports in-application programming via the standard HC08 monitor/SCI bootstrap, simplifying field firmware updates. The 8 MHz internal bus is derived from an on-chip oscillator block that can be driven by an external crystal or resonator, giving designers flexibility on clock accuracy versus BOM cost.
Typical applications include motor control (small BLDC and brushed DC), home appliances (washing machines, microwave ovens, dishwashers), HVAC control, smart metering, and industrial sensor interfaces. Its combination of FLASH, timers, and ADC channels supports both closed-loop control and user-interface scanning in a single chip.
When designing with this part, verify that the chosen LQFP-32 footprint (7x7 mm body, 0.8 mm pitch) matches your PCB land pattern. Decoupling the VDD/VSS pins with at least one 100 nF ceramic per pin pair and following NXP HC08 layout guidelines helps maintain ADC accuracy and reduce EMI on switching I/O lines.
This page consolidates real-time distributor pricing, parametric drop-in alternatives, and practical design notes not found on a single manufacturer page, supporting faster sourcing and second-source decisions.
Drop-in alternatives for MC908GR16ACFJE — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MC908GR16ACFJE (same form factor and footprint) — differing in Manufacturer, Program Memory Size, Mounting Type, Core, Maximum Clock Frequency.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC908GR16ACFUE
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC908GR16VFUJE
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC908GR32ACFJE
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$9.75 / Unit
View Datasheet →MC908GR48ACFJE
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.55 / Unit
View Datasheet →MC9S08AW16CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908GR16ACFJE Maximum Ratings & Electrical Characteristics
| Manufacturer | NXP Semiconductors (formerly Freescale) |
| Series | HC08 |
| Sub-family | MC908GR16 |
| Core | CPU08 (8-bit) |
| Program Memory Size | 16 KB (16K x 8) FLASH |
| Maximum Clock Frequency | 8 MHz |
| Package | 32-LQFP (7x7 mm) |
| Mounting Type | Surface Mount (Gull-Wing) |
| Terminal Form | Gull Wing |
| Package Code | LQFP |
| Package Shape | Square |
| Number of Terminals | 32 |
| Operating Temperature Grade | Industrial |
| RoHS Status | Compliant |
| Lifecycle Status | Not Recommended for New Designs (NRND) |
MC908GR16ACFJE Pin Configuration
| Pin 1 | PTD0/TxD — Port D I/O / SCI transmit (per HC08 GR16 datasheet) |
| Pin 2 | PTD1/RxD — Port D I/O / SCI receive (per HC08 GR16 datasheet) |
| Pin 3 | PTC0 — Port C I/O |
| Pin 4 | PTC1 — Port C I/O |
| Pin 5 | PTC2 — Port C I/O |
| Pin 6 | PTC3 — Port C I/O |
| Pin 7 | PTC4 — Port C I/O |
| Pin 8 | PTC5 — Port C I/O |
| Pin 9 | PTC6 — Port C I/O |
| Pin 10 | PTC7 — Port C I/O |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | VSS — Ground |
| Pin 13 | PTB0 — Port B I/O |
| Pin 14 | PTB1 — Port B I/O |
| Pin 15 | PTB2 — Port B I/O |
| Pin 16 | PTB3 — Port B I/O |
| Pin 17 | PTB4 — Port B I/O |
| Pin 18 | PTB5 — Port B I/O |
| Pin 19 | PTB6 — Port B I/O |
| Pin 20 | PTB7 — Port B I/O |
| Pin 21 | PTA0 — Port A I/O |
| Pin 22 | PTA1 — Port A I/O |
| Pin 23 | PTA2 — Port A I/O |
| Pin 24 | PTA3 — Port A I/O |
| Pin 25 | PTA4 — Port A I/O |
| Pin 26 | PTA5 — Port A I/O |
| Pin 27 | PTA6 — Port A I/O |
| Pin 28 | PTA7 — Port A I/O |
| Pin 29 | OSC1 — Oscillator input (crystal/resonator) |
| Pin 30 | OSC2 — Oscillator output (crystal/resonator) |
| Pin 31 | RESET — Active-low reset input |
| Pin 32 | IRQ — External interrupt request input |
Typical Applications
MC908GR16ACFJE is suitable for 6 applications: Small Motor Control (BLDC / Brushed DC), Home Appliance Control (Washing Machine, Microwave, Dishwasher), HVAC Fan and Blower Control, Smart Metering and Energy Monitoring, Industrial Sensor Interface and Signal Conditioning, User Interface Keypad and Display Controller.
Small Motor Control (BLDC / Brushed DC)
Why the MC908GR16ACFJE fits: the on-chip timer/PWM block, 8 MHz CPU08 core, and ADC channels in this part provide enough bandwidth for closed-loop control of small BLDC and brushed-DC motors up to a few hundred watts. The 16 KB FLASH holds state-machine control code, while 32-LQFP gives easy PCB routing for H-Bridge gate-driver traces. How it is used + performance consideration: the CPU generates complementary PWM to the gate driver and samples back-EMF through the ADC; the 8 MHz bus limits PWM frequency to ~50 kHz with 8-bit resolution, which is adequate for fans and pumps but tight for high-speed e-bike BLDCs. Pair with an external gate driver such as the MC33931 for higher-current loads.
Recommended
Home Appliance Control (Washing Machine, Microwave, Dishwasher)
Why the MC908GR16ACFJE fits: appliance main boards demand low BOM cost, robust I/O for keypads and seven-segment displays, and code-stable microcontrollers - exactly what the HC08 GR family delivers. The 16 KB FLASH fits menu handling, motor sequencing, and sensor filtering without external memory, while the industrial -40C to +85C grade tolerates the thermal environment near motors. How it is used + performance consideration: the MCU scans a matrix keypad, drives a triac-controlled AC load through opto-isolated I/O, and runs the wash-cycle state machine; the 8-bit core handles these tasks comfortably. For UI, add an external character LCD controller if more than 4 lines of text are needed.
Recommended
HVAC Fan and Blower Control
Why the MC908GR16ACFJE fits: HVAC indoor units need a temperature-sampling MCU with PWM outputs to drive blower fans and latched relays for compressor control. The on-chip ADC reads thermistor/resistor-network temperature sensors, the timer generates PWM for the blower MOSFET driver, and 16 KB of FLASH stores calibration tables for room-temperature curves. The industrial temp grade is critical for attic or basement installations. How it is used + performance consideration: the firmware implements a PI control loop at ~100 Hz sample rate, which is well within the 8 MHz CPU budget. For variable-speed compressors, the same HC08 GR32 part offers more FLASH for inverter code without changing the PCB layout.
Recommended
Smart Metering and Energy Monitoring
Why the MC908GR16ACFJE fits: electronic energy meters need a low-cost MCU that can sample current/voltage waveforms, drive a metrology-grade ADC front end, and handle calibration in FLASH. The HC08 GR16 has enough MIPS to run a 50/60 Hz energy-measurement algorithm at the required 4 kHz sampling rate, and 16 KB FLASH stores calibration constants and protocol stacks. How it is used + performance consideration: the MCU works alongside an external metrology AFE such as the ADE7953 (which provides the actual energy calculations), leaving the HC08 to handle the user interface and DLMS/COSEM or Modbus communication. The HC08's deterministic interrupt latency helps meet accuracy class 1.0.
Recommended
Industrial Sensor Interface and Signal Conditioning
Why the MC908GR16ACFJE fits: industrial sensor hubs often need to read 4-20 mA loops, thermistors, and digital inputs, then output a conditioned analog/digital signal. The on-chip ADC handles multiple analog channels, the SCI/UART provides RS-485 communication, and the FLASH stores linearization tables. The 32-LQFP package's 0.8 mm pitch is well-suited to industrial 4-layer boards with generous copper pours for thermal dissipation. How it is used + performance consideration: the firmware implements linearization polynomials in fixed-point math to keep CPU load low; the 8 MHz bus gives roughly 1 MIPS effective throughput, ample for these tasks. For hazardous-area designs, add external isolation such as the ISO1540 I2C isolator.
Recommended
User Interface Keypad and Display Controller
Why the MC908GR16ACFJE fits: the HC08 GR16's GPIO count and timer-driven scan logic make it well-suited to keyboard scanning and seven-segment/character-LCD driving. 16 KB of FLASH fits menu trees and font tables, while the 8 MHz core handles matrix keypad debounce and display refresh comfortably. The 32-LQFP package leaves enough GPIO for both keypad and parallel LCD interfacing. How it is used + performance consideration: the firmware scans a 4x4 keypad at ~10 ms intervals and refreshes a multiplexed 8-digit display at 100 Hz to avoid flicker; the 8-bit core is more than adequate. Adding a character LCD via I2C (with PCF8574 expander) frees GPIO for additional buttons.
Recommended
Recommended Products Summary
Engineering reference data for MC908GR16ACFJE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC908GR16ACFUE | MC908GR32ACFJE | MC9S08AW16CFUE |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Package | 32-LQFP (7x7 mm) | 32-LQFP (7x7 mm) - same | 32-LQFP (7x7 mm) - same | 32-LQFP (7x7 mm) - same |
| Program FLASH | 16 KB | 16 KB | 32 KB (+100%) | 16 KB |
| Maximum CPU Clock | 8 MHz | 8 MHz | 8 MHz | 20 MHz (+150%) |
| Core Architecture | CPU08 (8-bit) | CPU08 | CPU08 | S08 (next-gen) |
| Operating Temperature Grade | Industrial (-40C to +85C) | Industrial | Industrial | Industrial/Automotive |
| Lifecycle Status | NRND | NRND | NRND | Active (recommended) |
| RoHS Compliance | Yes | Yes | Yes | Yes |
| Pin-to-Pin Compatible | Yes (reference) | Yes (drop-in) | Yes (drop-in, more FLASH) | Mostly (peripheral mapping differs) |
Key Differentiators
- Pin-compatible FLASH upgrade path within the same HC08 GR family (vs MC908GR32ACFJE)
- Modern 8-bit successor with active lifecycle and higher CPU clock (vs MC9S08AW16CFUE)
- Lead-finish variant preserves identical silicon (vs MC908GR16ACFUE)
Design Notes
Estimated: with VDD = 5.0 V, the MC908GR16 AC suffix (industrial) part typically draws ~10-25 mA active and a few hundred uA in stop mode. Place one 100 nF X7R ceramic decoupling capacitor adjacent to every VDD/VSS pin pair, plus a bulk 4.7-10 uF tantalum or ceramic near the VDD pin. Add a ferrite bead in series with VDD if the analog ADC readings show periodic noise from PWM switching.
The 32-LQFP package has a 7x7 mm body with 0.8 mm lead pitch. Use a land pattern that follows IPC-7351 nominal-density guidelines (approximately 0.5 mm pad width, 1.5 mm pad length). Place a low-impedance ground plane on the layer immediately under the IC to reduce EMI; route the OSC1/OSC2 traces short and symmetric to the crystal to minimize clock jitter. Avoid routing high-speed switching traces under the LQFP body to reduce coupling into the ADC analog section.
Do not assume 5V-tolerant I/O: the HC08 GR16 absolute-max VDD is specified in the datasheet, and over-voltage on any pin can latch-up the part. Always use the bootstrap SCI mode for FLASH programming - the IRQ pin is also part of the monitor mode vector, so leave it accessible. Remember that the NRND status means NXP's last-time-buy window may close; capture firmware and verify against the datasheet revision before NXP discontinues support.
Compliance Information
RoHS and lead-free status confirmed via NXP product page; REACH, halogen-free, and conflict-minerals declarations not retrieved in the provided web data and set to 'unknown'.