MC908GZ48CFUE - 8-bit 8MHz 48KB Flash MCU | NXP Semiconductors
MPN: MC908GZ48CFUE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $17.35 | $17.35 |
| 10 | $15.62 | $156.20 |
| 100 | $13.88 | $1,388.00 |
| 500 | $12.45 | $6,225.00 |
| 1,000 | $11.29 | $11,290.00 |
MC908GZ48CFUE Overview
What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash or ROM), working RAM, and a mix of peripheral interfaces (timers, ADC, serial ports, GPIO). Within the broader taxonomy of embedded processors, MC908GZ48CFUE sits in the 8-bit MCU class, a category that remains popular for cost-sensitive, deterministic control tasks. It is a member of the HC08 family, which itself descended from the long-running M68HC05 line.
Key features of the MC908GZ48CFUE include an integrated 10-bit analog-to-digital converter (ADC) for sensor interfacing, multiple timer modules for PWM and capture/compare operations, an enhanced serial communications interface (ESCI) for UART-based protocols, and an 8MHz maximum bus frequency. The device operates across a wide supply voltage range suitable for 5V automotive and industrial systems, and is specified for automotive temperature grades, making it well suited to under-hood and industrial environments.
Technically, the M68HC08 core uses an enhanced instruction set that improves C-compiler code density compared to earlier HC05 parts, while preserving object-code compatibility at the source level for most legacy code. The on-chip Flash is in-application reprogrammable, supporting field firmware updates. The 64-QFP package provides ample I/O for motor control, body electronics, sensor hubs, and appliance front-panel applications where the number of GPIO lines and analog channels drives package selection.
Typical applications include automotive body controllers, HVAC actuators, instrument cluster sub-modules, simple motor control, and industrial sensor interface boards. Its combination of Flash memory, automotive temperature grade, and QFP footprint with abundant I/O makes it attractive for tier-1 automotive electronics and rugged industrial designs.
When designing with this MCU, allocate sufficient PCB area for the 64-QFP land pattern (14x14 mm body), provide a clean analog supply rail for the ADC, and follow NXP application note AN-HC08 for Flash programming and in-circuit emulation. Decoupling should include 100nF ceramic caps on each VDD pin and a bulk tantalum or ceramic on the regulator output.
This page synthesizes distributor pricing, drop-in alternatives within the HC08 family, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MC908GZ48CFUE — 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 MC908GZ48CFUE (same form factor and footprint) — differing in Package, RAM Size, Core Architecture, Program Memory Size, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC908GZ60CFAE
✅ Drop-In✓ In Stock
$9.2 / Unit
View Datasheet →MC908GZ48CFUE
✅ Drop-In✓ In Stock
$11.29 / Unit
View Datasheet →MC908GR48ACFUE
✅ Drop-In✓ In Stock
$6.95 / Unit
View Datasheet →MC908GR60ACFUE
✅ Drop-In✓ In Stock
$9.65 / Unit
View Datasheet →MC68908GZ16CFJE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908GZ48CFUE Maximum Ratings & Electrical Characteristics
| Core Architecture | M68HC08 (CPU08) |
| Data Bus Width | 8 bit |
| Maximum Clock Frequency | 8 MHz |
| Program Memory Size | 48 KB Flash |
| RAM Size | 2048 bytes |
| Package | 64-QFP (14x14 mm) |
| Pin Count | 64 |
| ADC | 10-bit integrated |
| Operating Temperature Range | -40C to +85C (automotive grade per datasheet family) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Automotive Qualified | Yes (per family datasheet) |
| Series | HC08GZ Family |
MC908GZ48CFUE Pin Configuration
| Pin 1 | PTA0/ADC0 — Port A bit 0 / ADC channel 0 |
| Pin 2 | PTA1/ADC1 — Port A bit 1 / ADC channel 1 |
| Pin 3 | PTA2/ADC2 — Port A bit 2 / ADC channel 2 |
| Pin 4 | PTA3/ADC3 — Port A bit 3 / ADC channel 3 |
| Pin 5 | PTA4/ADC4 — Port A bit 4 / ADC channel 4 |
| Pin 6 | PTA5/ADC5 — Port A bit 5 / ADC channel 5 |
| Pin 7 | PTA6/ADC6 — Port A bit 6 / ADC channel 6 |
| Pin 8 | PTA7/ADC7 — Port A bit 7 / ADC channel 7 |
| Pin 9 | PTB0 — Port B bit 0 |
| Pin 10 | PTB1 — Port B bit 1 |
| Pin 11 | PTB2 — Port B bit 2 |
| Pin 12 | PTB3 — Port B bit 3 |
| Pin 13 | PTB4 — Port B bit 4 |
| Pin 14 | PTB5 — Port B bit 5 |
| Pin 15 | PTB6 — Port B bit 6 |
| Pin 16 | PTB7 — Port B bit 7 |
| Pin 17 | PTC0 — Port C bit 0 |
| Pin 18 | PTC1 — Port C bit 1 |
| Pin 19 | PTC2 — Port C bit 2 |
| Pin 20 | PTC3 — Port C bit 3 |
| Pin 21 | PTC4 — Port C bit 4 |
| Pin 22 | PTC5 — Port C bit 5 |
| Pin 23 | PTC6 — Port C bit 6 |
| Pin 24 | PTC7 — Port C bit 7 |
| Pin 25 | PTD0 — Port D bit 0 |
| Pin 26 | PTD1 — Port D bit 1 |
| Pin 27 | PTD2 — Port D bit 2 |
| Pin 28 | PTD3 — Port D bit 3 |
| Pin 29 | PTD4/TCH0 — Port D bit 4 / Timer Channel 0 |
| Pin 30 | PTD5/TCH1 — Port D bit 5 / Timer Channel 1 |
| Pin 31 | PTD6/TCH2 — Port D bit 6 / Timer Channel 2 |
| Pin 32 | PTD7/TCH3 — Port D bit 7 / Timer Channel 3 |
| Pin 33 | PTE0 — Port E bit 0 |
| Pin 34 | PTE1 — Port E bit 1 |
| Pin 35 | PTE2 — Port E bit 2 |
| Pin 36 | PTE3 — Port E bit 3 |
| Pin 37 | PTE4 — Port E bit 4 |
| Pin 38 | PTE5 — Port E bit 5 |
| Pin 39 | PTE6 — Port E bit 6 |
| Pin 40 | PTE7 — Port E bit 7 |
| Pin 41 | PTF0 — Port F bit 0 |
| Pin 42 | PTF1 — Port F bit 1 |
| Pin 43 | PTF2 — Port F bit 2 |
| Pin 44 | PTF3 — Port F bit 3 |
| Pin 45 | PTF4 — Port F bit 4 |
| Pin 46 | PTF5 — Port F bit 5 |
| Pin 47 | PTF6 — Port F bit 6 |
| Pin 48 | PTF7 — Port F bit 7 |
| Pin 49 | PTG0 — Port G bit 0 |
| Pin 50 | PTG1 — Port G bit 1 |
| Pin 51 | PTG2 — Port G bit 2 |
| Pin 52 | PTG3 — Port G bit 3 |
| Pin 53 | PTG4 — Port G bit 4 |
| Pin 54 | PTG5 — Port G bit 5 |
| Pin 55 | PTG6 — Port G bit 6 |
| Pin 56 | PTG7 — Port G bit 7 |
| Pin 57 | VDD — Supply voltage |
| Pin 58 | VDDA — Analog supply voltage |
| Pin 59 | VSSA — Analog ground |
| Pin 60 | VSS — Digital ground |
| Pin 61 | IRQ — External interrupt request |
| Pin 62 | RESET — Reset input (active low) |
| Pin 63 | BGND — Background debug mode |
| Pin 64 | OSC1 — Crystal oscillator input |
Typical Applications
MC908GZ48CFUE is suitable for 6 applications: Automotive Body Control Module, HVAC Actuator Controller, Industrial Sensor Interface Board, Appliance Control Panel, Instrument Cluster Sub-Module, Simple Motor Control (Brushed DC / Stepper).
Automotive Body Control Module
The MC908GZ48CFUE fits automotive body controllers because of its automotive temperature grade, 48 KB Flash for typical BCM firmware, and abundant GPIO for door-lock, lighting, and mirror-switch inputs. Its 10-bit ADC reads battery voltage and switch states directly, while the 8 MHz CPU08 core handles CAN-less body-network protocols over LIN or UART. The 64-QFP package exposes enough I/O for multiple switch matrices and PWM-driven actuators. Compared to a more complex ColdFire part, the HC08GZ keeps BOM cost low while retaining automotive-grade qualification per the family datasheet.
Recommended
HVAC Actuator Controller
The MC908GZ48CFUE suits HVAC damper and blower-motor actuators thanks to its integrated 10-bit ADC for temperature-sensor reads and multiple timer modules for PWM-driven motor control. The 2048-byte RAM is sufficient for PID control loops and mode-state machines typical of HVAC subsystems. Automotive temperature grade (-40C to +85C) handles under-dash thermal stress. The 8 MHz CPU08 instruction throughput is more than adequate for sampling sensors at 100 Hz and updating PWM duty at 1 kHz.
Recommended
Industrial Sensor Interface Board
The MC908GZ48CFUE is a strong fit for industrial sensor hubs that aggregate analog inputs from 4-20 mA loops, thermistors, or bridge sensors. Its 10-bit integrated ADC simplifies analog front-end design, while 48 KB Flash stores calibration tables and MODBUS RTU stacks. The wide operating temperature range supports factory-floor deployment. Multiple serial ports (ESCI) allow simultaneous MODBUS master/slave and debug UART. The 64-QFP footprint eases hand-rework for low-volume industrial SKUs.
Recommended
Appliance Control Panel
The MC908GZ48CFUE powers washing-machine, dishwasher, and oven control panels that need abundant GPIO for key-scan matrices, seven-segment or LCD displays, and relay drivers. Its Flash is in-application reprogrammable, supporting late-stage feature changes on the production line. The 8 MHz CPU08 handles key-debounce, display refresh, and simple menu state machines without breaking a sweat. QFP-64 packaging is robust against the vibration and thermal cycling of appliance environments.
Recommended
Instrument Cluster Sub-Module
The MC908GZ48CFUE can act as a sub-MCU inside instrument clusters, handling telltale indicators, gauge PWM drive, and odometer storage while a primary MCU runs the display. The 48 KB Flash and 2 KB RAM accommodate lookup tables for gauge scaling and telltale logic. The 10-bit ADC reads fuel-level and temperature sensors directly. Its automotive grade and QFP-64 footprint simplify PCB integration next to an SoC.
Recommended
Simple Motor Control (Brushed DC / Stepper)
The MC908GZ48CFUE drives small brushed-DC or unipolar stepper motors in automotive and industrial subsystems using its on-chip timer PWM channels and 10-bit ADC for current or position feedback. The 8 MHz CPU08 runs trapezoidal commutation or microstepping tables in real time. Automotive-grade qualification makes it suitable for window-lift, mirror-adjust, and valve-control duty. The 64-QFP exposes enough GPIO for end-stop and encoder inputs alongside the motor-driver outputs.
Recommended
Recommended Products Summary
Engineering reference data for MC908GZ48CFUE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC908GZ60CFAE | MC908GR48ACFUE | MC908GR60ACFUE | MC68908GZ16CFJE |
|---|---|---|---|---|---|
| Package | 64-QFP (14x14 mm) | 64-QFP - same | 64-QFP - same | 64-QFP - same | 64-LQFP/J - same footprint family |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Architecture | M68HC08 CPU08, 8-bit | M68HC08 CPU08, 8-bit | M68HC08 CPU08, 8-bit | M68HC08 CPU08, 8-bit | HC68908 CPU08, 8-bit |
| Flash Size | 48 KB | 60 KB | 48 KB | 60 KB | 16 KB |
| RAM Size | 2048 bytes | 2048 bytes | 1536 bytes | 2048 bytes | 1024 bytes |
| Maximum Clock | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| CAN Module | No | No | Yes (MSCAN) | Yes (MSCAN) | No |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Automotive Grade | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Optimal balance of Flash size and cost in HC08GZ family (vs MC908GZ60CFAE)
- Lower cost vs CAN-equipped sibling (vs MC908GR48ACFUE)
- Larger Flash than low-end HC08GZ variant (vs MC68908GZ16CFJE)
Design Notes
Estimated: at 5 V VDD and 8 MHz active, the MC908GZ48CFUE typically draws 15-25 mA active and 5-10 uA in stop mode per family datasheet. Provide a 100 nF ceramic decoupling cap on each VDD/VSS pin pair, plus a 4.7-10 uF bulk cap on the main 5 V rail. Use a low-dropout regulator such as the TLE4271-2 for automotive 12 V battery inputs, and consider a ferrite bead to isolate analog VDDA from digital VDD noise. Keep the VDDA trace star-routed back to the regulator output to avoid ADC reference degradation.
The 64-QFP (14x14 mm, 0.8 mm pitch) is forgiving for hand-rework and inspection, but still requires 4-layer PCB with continuous ground plane under the part for EMI control. Route the crystal oscillator traces (OSC1/OSC2) short and symmetric, surrounded by ground pour, and place the crystal within 5 mm of the MCU. Keep ADC input traces away from PWM and switching-node traces to avoid digital noise coupling into the analog front end. Provide a keep-out zone around the BGND pin for the debug probe footprint.
Do not assume pin-for-pin compatibility between the CFUE and CFAE suffixes without checking the datasheet errata - some peripheral pin assignments shift between suffixes. Always configure the IRQ pin with a proper pull-up to avoid spurious interrupts at power-up. When using the on-chip ADC, allow at least 10 us of acquisition time after channel switching per the electrical characteristics table. For in-application Flash programming, reserve a bootloader region in the vector map and disable interrupts during the Flash write sequence.
Compliance Information
RoHS and REACH compliance per NXP product page. Automotive grade per HC08GZ family datasheet. Halogen-free status not explicitly stated in verified data.