MC908GZ32VFJE - 8-Bit HC08 MCU, 32KB Flash, 32-LQFP | NXP
MPN: MC908GZ32VFJE ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.92 | $8.92 |
| 10 | $7.98 | $79.80 |
| 100 | $6.45 | $645.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.25 | $4,250.00 |
MC908GZ32VFJE Overview
An HC08 microcontroller is a member of the Freescale/NXP HC08 8-bit CISC architecture family, itself part of the broader 8-bit MCU hierarchy that includes the HC11 and HC(S)12 ancestors. HC08 devices occupy the cost-optimized, low-pin-count segment of the Freescale 8-bit portfolio and are commonly classified as automotive-grade or industrial-grade microcontrollers depending on qualification. Within a typical embedded system, an MCU sits inside the power management and control subsystem, taking signals from sensors and driving actuators or displays through its GPIO and peripheral set.
Key features include 32KB (32K x 8) Flash program memory, 1.5KB of static RAM, 21 GPIO pins, an internal oscillator block to reduce external component count, and 3.3V/5V operating-voltage flexibility that simplifies interface to legacy 5V peripherals. The HC08 CISC core executes each instruction in 2 to 13 bus cycles, delivering adequate throughput for motor control, body-electronics, and simple user-interface tasks at 8MHz. The 32-LQFP (7x7) package supports standard surface-mount assembly lines and provides sufficient thermal performance for industrial temperature ranges.
This MCU is widely used in automotive body-electronics modules, industrial control panels, appliance control boards, and low-cost sensor hubs where the HC08 ecosystem, mature toolchain, and long-term NXP/Freescale support outweigh the appeal of newer Cortex-M0 parts. Because the device is now serviced by Rochester Electronics as an authorized continuing-supply source, design teams can maintain legacy platforms without PCB rework.
Designers should note that the Flash write/erase endurance (typically 10K cycles per block) and the absence of an on-chip debug port beyond the standard background-debug-mode interface may limit in-field firmware update strategies. The internal oscillator accuracy is typically within a few percent; designs requiring CAN, USB, or precise timing must use an external crystal.
Drop-in alternatives for MC908GZ32VFJE — 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 MC908GZ32VFJE (same form factor and footprint) — differing in Package / Case, RAM Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC908GZ32CFJE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908GZ32VFAE
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC908GR32ACFJE
✅ Drop-In✓ In Stock
$9.75 / Unit
View Datasheet →MC908GZ60VFJE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908AP32ACFJE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908GZ32VFJE Maximum Ratings & Electrical Characteristics
| Core Architecture | HC08 (8-bit CISC) |
| Core Clock Speed | 8 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 32 KB (32K x 8) |
| RAM Size | 1.5 KB (1.5K x 8) |
| Number of I/O Pins | 21 |
| Package / Case | 32-LQFP (7x7 mm) |
| Supply Voltage | 3.3 V / 5 V |
| Oscillator Type | Internal |
| Mounting Type | Surface Mount |
| Packaging | Tray |
MC908GZ32VFJE Pin Configuration
| Pin 1 | PTA0/TCLK — Port A bit 0 / Timer clock input |
| Pin 2 | PTA1 — Port A bit 1 |
| Pin 3 | PTA2 — Port A bit 2 |
| Pin 4 | PTA3 — Port A bit 3 |
| Pin 5 | VDD — Supply voltage (3.3V / 5V) |
| Pin 6 | VSS — Ground |
| Pin 7 | PTA4 — Port A bit 4 |
| Pin 8 | PTA5 — Port A bit 5 |
| Pin 9 | PTA6 — Port A bit 6 |
| Pin 10 | PTA7 — Port A bit 7 |
| Pin 11 | PTB0 — Port B bit 0 |
| Pin 12 | PTB1 — Port B bit 1 |
| Pin 13 | PTB2 — Port B bit 2 |
| Pin 14 | PTB3 — Port B bit 3 |
| Pin 15 | PTB4 — Port B bit 4 |
| Pin 16 | PTB5 — Port B bit 5 |
| Pin 17 | PTB6 — Port B bit 6 |
| Pin 18 | PTB7 — Port B bit 7 |
| Pin 19 | PTC0 — Port C bit 0 |
| Pin 20 | PTC1 — Port C bit 1 |
| Pin 21 | PTC2 — Port C bit 2 |
| Pin 22 | PTC3 — Port C bit 3 |
| 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 | OSC1 — Crystal oscillator input |
| Pin 32 | OSC2 — Crystal oscillator output |
Typical Applications
MC908GZ32VFJE is suitable for 6 applications: Automotive Body Electronics Modules, Industrial Control Panel HMI, Appliance Control Boards, Low-Cost Sensor Hubs, HVAC Fan and Blower Controllers, Battery-Operated Field Instruments.
Automotive Body Electronics Modules
The MC908GZ32VFJE's 32KB Flash and 1.5KB RAM comfortably hold door-module, mirror-control, and lighting firmware, while its 21 GPIO pins directly drive relays and read switches without external expanders. The HC08's mature automotive pedigree means reference designs and application notes for BCM, RKE receivers, and seat controllers are abundant. Operating from a 5V rail aligns with legacy body-bus sensor stacks, and the 32-LQFP (7x7) footprint fits behind the headliner or inside a mirror housing. Designers value the part's deterministic interrupt latency for switch-debounce handling.
Recommended
Industrial Control Panel HMI
For low-cost keypad-and-LCD human-machine interfaces, the MC908GZ32VFJE's 32KB Flash and 8MHz HC08 core handle menu logic, debounce, and serial back-haul to a host PLC. Its 21 GPIO easily route to a 4x4 matrix keypad and a character LCD without external mux logic. The 3.3V/5V supply flexibility simplifies interface to industrial 24V-to-5V brick converters and 3.3V LCD modules. The 32-LQFP (7x7) footprint and standard tray packaging suit automated panel-assembly lines.
Recommended
Appliance Control Boards
Washing machines, dishwashers, and microwave ovens benefit from the MC908GZ32VFJE's HC08 CISC core, 32KB Flash for motor-control state machines, and 21 GPIO for triac-driven loads. The internal oscillator removes external crystal cost, and the 32-LQFP (7x7) withstands the through-hole reflow profiles used in white-goods manufacturing. The 3.3V/5V dual-supply flexibility simplifies interface to both modern display modules and legacy 5V sensor packs.
Recommended
Low-Cost Sensor Hubs
When an application needs to aggregate data from a handful of analog or digital sensors and forward it over UART, SPI, or CAN, the MC908GZ32VFJE's peripheral mix and 32KB Flash are well matched. Its 21 GPIO drive multiplexed sensor enables without external logic, while the 8MHz HC08 core is sufficient for slow sampling loops. The 32-LQFP (7x7) keeps BOM and assembly cost low for distributed sensor networks on the factory floor.
Recommended
HVAC Fan and Blower Controllers
Variable-speed blower controllers in residential HVAC systems leverage the MC908GZ32VFJE's HC08 core for closed-loop RPM control via back-EMF sensing or Hall-effect feedback. Its 32KB Flash holds profile tables for multi-speed operation, and 21 GPIO drive TRIAC gates and opto-isolated relay coils. The 3.3V/5V supply range supports both 5V analog front-ends and 3.3V logic-level fans.
Recommended
Battery-Operated Field Instruments
Portable measurement instruments benefit from the MC908GZ32VFJE's low power modes, internal oscillator (eliminating external crystal draw), and 32KB Flash for calibration tables. Its 21 GPIO drive LCD segments, push-buttons, and serial-data interfaces. The 3.3V/5V dual-supply simplifies Li-ion or 4xAA battery topologies, and the 32-LQFP (7x7) supports compact handheld enclosures.
Recommended
Recommended Products Summary
Engineering reference data for MC908GZ32VFJE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC908GZ32CFJE | MC908GZ32VFAE | MC908GR32ACFJE | MC908GZ60VFJE | MC908AP32ACFJE |
|---|---|---|---|---|---|---|
| Package | 32-LQFP (7x7) | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Architecture | HC08 (8-bit CISC) | HC08 (8-bit CISC) | HC08 (8-bit CISC) | HC08 (8-bit CISC) | HC08 (8-bit CISC) | HC08 (8-bit CISC) |
| Core Clock Speed | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Program Flash Size | 32 KB | 32 KB | 32 KB | 32 KB | 60 KB | 32 KB |
| RAM Size | 1.5 KB | 1.5 KB | 1.5 KB | 2 KB | 2 KB | 2 KB |
| GPIO Count | 21 | 21 | 21 | 21 | 21 | 21 |
| Supply Voltage | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V |
| Oscillator Type | Internal | Internal | Internal | Internal | Internal | Internal |
| Lifecycle Status | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy |
Key Differentiators
- Higher Flash headroom variant available in same package (vs MC908GZ60VFJE)
- Mature HC08 toolchain and abundant reference designs (vs MC908GR32ACFJE)
- AP-family analog peripherals for sensor-front-end designs (vs MC908AP32ACFJE)
Design Notes
Decouple VDD/VSS with a 100nF ceramic capacitor placed within 5mm of the supply pin, and add a bulk 4.7uF tantalum or aluminum-polymer cap on the same rail. The HC08's internal voltage regulator is sensitive to high-impedance supplies during Flash programming; insufficient decoupling can cause programming failures and erratic resets. Always follow the manufacturer's recommended power-tree sequencing when using an external 5V-to-3.3V LDO for low-voltage operation.
Route the OSC1/OSC2 traces short and symmetric, with a guard ground around them if using an external crystal. If the internal oscillator is used instead, leave OSC1/OSC2 as no-connects with no copper pour underneath to minimize stray capacitance. The 32-LQFP (7x7) pin pitch is 0.8mm, so use 0.4mm-wide traces with 0.2mm spacing on the top layer to escape cleanly.
Avoid relying on the internal oscillator for CAN or USB timing — its accuracy is typically only a few percent and will not meet CAN bit-time requirements. Add an external crystal or ceramic resonator for any communication protocol requiring better than 2% frequency accuracy. Also, when migrating firmware from the 32KB GZ32 variant to the 60KB GZ60 variant, verify that the Flash driver addresses the higher memory map correctly.
Compliance Information
Compliance data not present in the Verified Web Data provided. Industrial-grade MCU, AEC-Q100 not applicable unless specifically qualified variant. Compliance to be confirmed from manufacturer datasheet.