MC908GZ32MFUE - 8MHz HC08 32KB Flash MCU 64-QFP | NXP
MPN: MC908GZ32MFUE ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.51 | $18.51 |
| 10 | $16.2 | $162.00 |
| 100 | $13.85 | $1,385.00 |
| 500 | $12.1 | $6,050.00 |
| 1,000 | $10.95 | $10,950.00 |
MC908GZ32MFUE Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash/ROM), volatile data memory (RAM), and peripheral interfaces on one die. Within the taxonomy, the MC908GZ32MFUE is a Flash-based MCU -> microcontroller unit -> embedded processor -> semiconductor IC. The M68HC08 instruction set, an enhanced successor to the M68HC05, offers indexed addressing, multiply instruction, and a flat memory model widely used in automotive body, appliance and industrial-control designs.
Key features of the MC908GZ32MFUE include 32 KB (32K x 8) Flash program memory, 1.5 KB on-chip RAM, an 8-channel 10-bit ADC, multiple timer modules, and serial communication interfaces (SCI, SPI). It operates from 3.0 V to 5.5 V across the industrial -40 °C to +85 °C range, with low-power stop and wait modes that suit battery- and line-powered control modules. The 64-QFP package provides generous I/O count for mixed-signal control boards.
Architecturally, the device uses the M68HC08 CPU08 core with a 16-bit stack pointer, 16-bit index register H:X, and BCD arithmetic support. The internal Flash controller supports in-application reprogrammability via the standard HC08 monitor ROM, enabling firmware updates in the field without external programmer hardware. The peripheral set is mapped into the standard HC08 register file for predictable C and assembly coding.
Typical applications include HVAC control boards, white-goods motor control, automotive body electronics (mirror/cluster/seat modules), industrial sensor-conditioning boards, and general-purpose 8-bit replacement of legacy HC05/HC11 designs. The wide 3.0-5.5 V supply tolerance lets it share 5 V analog signal-chain rails directly.
A key design consideration is supply decoupling: place a 0.1 µF ceramic as close as possible to each VDD/VSS pair, with a bulk 10 µF tantalum or ceramic at the regulator output. Always configure the PLL/oscillator start-up delay and the COP watchdog in code to recover from brown-out or EMI-induced hangs.
This page synthesizes distributor stock data, EOL guidance, drop-in alternatives, and practical HC08 design notes not found in the bare manufacturer datasheet - giving procurement and firmware engineers an actionable reference in one place.
Drop-in alternatives for MC908GZ32MFUE — 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 MC908GZ32MFUE (same form factor and footprint) — differing in Core Architecture, RAM Size, Maximum Clock Frequency, ADC, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC908GZ60MFUE
✅ Drop-In✓ In Stock
$10.5 / Unit
View Datasheet →MC908GZ48MFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908GZ16MFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908GZ8MFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908GZ32VFUE
✅ Drop-In✓ In Stock
$5.15 / Unit
View Datasheet →MC908GZ32MFUE Maximum Ratings & Electrical Characteristics
| Core | M68HC08 (CPU08) |
| Instruction Set | HC08 (8-bit CISC) |
| Program Memory | 32 KB Flash (32K x 8) |
| RAM | 1.5 KB on-chip |
| Maximum CPU Frequency | 8 MHz |
| Supply Voltage | 3.0 V to 5.5 V |
| Operating Temperature | -40 °C to +85 °C (industrial) |
| ADC | 8-channel, 10-bit |
| Serial Interfaces | SCI (UART), SPI |
| Timers | Multiple 16-bit timer modules |
| Package | 64-QFP (14x14 mm) |
| Mounting Type | Surface Mount |
MC908GZ32MFUE Pin Configuration
| Pin 1 | PTA0/KBI0/ADC0 — Port A bit 0 / Keyboard interrupt / ADC channel 0 |
| Pin 2 | PTA1/KBI1/ADC1 — Port A bit 1 / Keyboard interrupt / ADC channel 1 |
| Pin 3 | PTA2/KBI2/ADC2 — Port A bit 2 / Keyboard interrupt / ADC channel 2 |
| Pin 4 | PTA3/KBI3/ADC3 — Port A bit 3 / Keyboard interrupt / ADC channel 3 |
| Pin 5 | PTA4/KBI4/ADC4 — Port A bit 4 / Keyboard interrupt / ADC channel 4 |
| Pin 6 | PTA5/KBI5/ADC5 — Port A bit 5 / Keyboard interrupt / ADC channel 5 |
| Pin 7 | PTA6/KBI6/ADC6 — Port A bit 6 / Keyboard interrupt / ADC channel 6 |
| Pin 8 | PTA7/KBI7/ADC7 — Port A bit 7 / Keyboard interrupt / ADC channel 7 |
| Pin 9 | VDD — Supply voltage (3.0-5.5 V) |
| Pin 10 | VSS — Ground |
| Pin 11 | PTB0/TxD — Port B bit 0 / SCI transmit |
| Pin 12 | PTB1/RxD — Port B bit 1 / SCI receive |
| Pin 13 | PTB2/SPSCK — Port B bit 2 / SPI clock |
| Pin 14 | PTB3/MOSI — Port B bit 3 / SPI master-out slave-in |
| Pin 15 | PTB4/MISO — Port B bit 4 / SPI master-in slave-out |
| Pin 16 | PTB5/SS — Port B bit 5 / SPI slave select |
| Pin 17 | PTB6 — Port B bit 6 |
| Pin 18 | PTB7 — Port B bit 7 |
| Pin 19 | PTC0/T1CH0 — Port C bit 0 / Timer 1 channel 0 |
| Pin 20 | PTC1/T1CH1 — Port C bit 1 / Timer 1 channel 1 |
| Pin 21 | PTC2/T2CH0 — Port C bit 2 / Timer 2 channel 0 |
| Pin 22 | PTC3/T2CH1 — Port C bit 3 / Timer 2 channel 1 |
| Pin 23 | PTC4 — Port C bit 4 |
| Pin 24 | PTC5 — Port C bit 5 |
| Pin 25 | PTC6 — Port C bit 6 |
| Pin 26 | PTC7 — Port C bit 7 |
| Pin 27 | PTD0 — Port D bit 0 |
| Pin 28 | PTD1 — Port D bit 1 |
| Pin 29 | PTD2 — Port D bit 2 |
| Pin 30 | PTD3 — Port D bit 3 |
| Pin 31 | PTD4 — Port D bit 4 |
| Pin 32 | PTD5 — Port D bit 5 |
| Pin 33 | PTD6 — Port D bit 6 |
| Pin 34 | PTD7 — Port D bit 7 |
| Pin 35 | PTE0 — Port E bit 0 |
| Pin 36 | PTE1 — Port E bit 1 |
| Pin 37 | PTE2 — Port E bit 2 |
| Pin 38 | PTE3 — Port E bit 3 |
| Pin 39 | PTE4 — Port E bit 4 |
| Pin 40 | PTE5 — Port E bit 5 |
| Pin 41 | PTE6 — Port E bit 6 |
| Pin 42 | PTE7 — Port E bit 7 |
| Pin 43 | PTF0 — Port F bit 0 |
| Pin 44 | PTF1 — Port F bit 1 |
| Pin 45 | PTF2 — Port F bit 2 |
| Pin 46 | PTF3 — Port F bit 3 |
| Pin 47 | PTF4 — Port F bit 4 |
| Pin 48 | PTF5 — Port F bit 5 |
| Pin 49 | PTF6 — Port F bit 6 |
| Pin 50 | PTF7 — Port F bit 7 |
| Pin 51 | PTG0 — Port G bit 0 |
| Pin 52 | PTG1 — Port G bit 1 |
| Pin 53 | PTG2 — Port G bit 2 |
| Pin 54 | PTG3 — Port G bit 3 |
| Pin 55 | PTG4 — Port G bit 4 |
| Pin 56 | PTG5 — Port G bit 5 |
| Pin 57 | PTG6 — Port G bit 6 |
| Pin 58 | PTG7 — Port G bit 7 |
| Pin 59 | VDD — Supply voltage (3.0-5.5 V) |
| Pin 60 | VSS — Ground |
| Pin 61 | OSC1 — Crystal oscillator input |
| Pin 62 | OSC2 — Crystal oscillator output |
| Pin 63 | RST — Reset (active low) |
| Pin 64 | IRQ — External interrupt request |
Typical Applications
MC908GZ32MFUE is suitable for 6 applications: HVAC Control Boards, White-Goods Motor Control, Automotive Body Electronics, Industrial Sensor Conditioning, Appliance User Interface Boards, Legacy HC05/HC11 Replacement.
HVAC Control Boards
The MC908GZ32MFUE fits HVAC control boards because its 8-channel 10-bit ADC can sample thermistor, pressure and airflow sensors directly, while the SCI interfaces link to indoor and outdoor unit transceivers. The 32 KB Flash accommodates zoning, scheduling and PID control firmware for residential heat-pump and furnace controllers. Wide 3.0-5.5 V supply tolerance lets it share 5 V analog rails without extra level shifters, and the industrial -40 °C to +85 °C window handles attic and rooftop environments.
Recommended
White-Goods Motor Control
Washing machines, dishwashers and refrigerator compressors use the MC908GZ32MFUE for BLDC and universal-motor commutation thanks to its timer modules that drive PWM outputs up to 8 MHz bus clock. The 32 KB Flash holds speed profiles, fault diagnostics and user-interface state machines, while the SPI links to external EEPROM for parameter storage. Industrial temperature grade plus low-power wait/stop modes help meet ENERGY STAR idle budgets for major appliances.
Recommended
Automotive Body Electronics
Body controllers for seat modules, mirror adjusters and instrument clusters leverage the MC908GZ32MFUE's CAN-capable SCI, robust GPIO and 3.0-5.5 V supply that handles 12 V battery transients after regulator. The HC08GZ family was widely designed into automotive subsystems before the S12/S08 takeover. The QFP-64 footprint exposes enough pins for multi-load drivers and LIN slaves in a single-chip solution.
Recommended
Industrial Sensor Conditioning
PLC analog input modules and process-sensor signal conditioners pair the MC908GZ32MFUE with the on-chip 10-bit ADC to digitize 4-20 mA loops and bridge sensors. The 32 KB Flash holds linearization tables and Modbus RTU stacks, and the SCI port drives RS-485 transceivers. Wide supply tolerance handles 24 V industrial rails after a small LDO, and the -40 °C to +85 °C range covers cabinet and field mounting.
Recommended
Appliance User Interface Boards
Keypad, LCD and LED-indicator boards in microwaves, ovens and coffee machines run on the MC908GZ32MFUE because its GPIO count fits matrix key-scans and 7-segment drives directly. The HC08 instruction set executes short event loops without an RTOS, keeping BOM cost down. The 3.0-5.5 V range interfaces to common 5 V LCD drivers, and QFP-64 leaves room for piezo-buzzer, rotary encoder and IR receiver pins.
Recommended
Legacy HC05/HC11 Replacement
Designers migrating legacy M68HC05 or HC11 firmware to a current-production 8-bit MCU use the MC908GZ32MFUE because the HC08 core preserves the HC05 programming model with indexed addressing, BCD arithmetic and a flat memory map. C source ports with minimal effort, and the 32 KB Flash holds modernized firmware images. The 64-QFP footprint exposes more I/O than typical HC11 packages, easing PCB reuse.
Recommended
Recommended Products Summary
Engineering reference data for MC908GZ32MFUE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC908GZ60MFUE | MC908GZ48MFUE | MC908GZ16MFUE | MC908GZ8MFUE | MC908GZ32VFUE |
|---|---|---|---|---|---|---|
| Package | 64-QFP (14x14) | 64-QFP (14x14) - same | 64-QFP (14x14) - same | 64-QFP (14x14) - same | 64-QFP (14x14) - same | 64-QFP (14x14) - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Core | HC08 (CPU08) | HC08 (CPU08) - same | HC08 (CPU08) - same | HC08 (CPU08) - same | HC08 (CPU08) - same | HC08 (CPU08) - same |
| Flash Memory | 32 KB | 60 KB | 48 KB | 16 KB | 8 KB | 32 KB |
| Max CPU Frequency | 8 MHz | 8 MHz - same | 8 MHz - same | 8 MHz - same | 8 MHz - same | 8 MHz - same |
| Supply Voltage | 3.0-5.5 V | 3.0-5.5 V - same | 3.0-5.5 V - same | 3.0-5.5 V - same | 3.0-5.5 V - same | 3.0-5.5 V - same |
| Operating Temperature Grade | Industrial -40 to +85 °C (M) | Industrial -40 to +85 °C (M) | Industrial -40 to +85 °C (M) | Industrial -40 to +85 °C (M) | Industrial -40 to +85 °C (M) | V grade - verify range |
| Lifecycle Status | Last-time-buy / EOL | EOL | EOL | EOL | EOL | Obsolete |
Key Differentiators
- Larger Flash memory headroom for richer firmware (vs MC908GZ48MFUE)
- Industrial temperature grade (M suffix) (vs MC908GZ32VFUE)
- Established EOL stock availability vs active production (vs S08AW60 (NXP S08 family))
Design Notes
Place a 0.1 µF ceramic decoupling capacitor as close as possible to every VDD/VSS pair (pins 9/10 and 59/60) and add a single 10 µF bulk tantalum or ceramic at the regulator output. The HC08GZ core draws short bursts of current during Flash programming, so the bulk capacitor prevents VDD droops that can trigger spurious resets. Keep the regulator within 2 inches of the VDD pins.
Configure the COP (computer operating properly) watchdog in firmware and select an appropriate timeout to recover from EMI-induced hangs or brown-outs. Always set the CONFIG register correctly to enable the LVI (low-voltage inhibit) and the desired stop-mode behavior before locking the Flash. Mis-configured CONFIG bytes are the single most common cause of 'dead' HC08 prototypes.
Route the crystal traces between OSC1 (pin 61) and OSC2 (pin 62) short and symmetric, with a ground guard ring around the crystal to minimize EMI pickup. Place the RST (pin 63) pull-up and the optional reset capacitor within 0.5 inch of the pin. Keep ADC input traces (PTA0-PTA7) away from PWM outputs (PTC0-PTC3) to reduce digital coupling into analog readings.
Compliance Information
MC908GZ32MFUE is an EOL NXP HC08 MCU. RoHS/REACH/lead-free status for this specific lot is not stated in the verified web data; consult NXP PCN documentation. Not AEC-Q100 qualified - this is an industrial-grade MCU, not an automotive-qualified part.