MC908AS60ACFNE - 8-bit HC08 MCU 60KB Flash 8.4MHz PLCC-52 | NXP
MPN: MC908AS60ACFNE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.75 | $1,375.00 |
| 500 | $11.4 | $5,700.00 |
| 1,000 | $9.85 | $9,850.00 |
MC908AS60ACFNE Overview
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, data memory, and integrated peripherals. The HC08 family represents the 8-bit branch of the broader Motorola/Freescale/NXP M68HCxx lineage, which sits within the larger category of embedded microcontrollers -> microprocessors -> digital ICs -> semiconductors. The 8-bit MCU segment remains relevant for cost-sensitive, deterministic, low-power embedded applications where ARM Cortex-M overhead is unnecessary.
Key features of the MC908AS60ACFNE include 60KB (60K x 8) of FLASH program memory, 2KB of on-chip EEPROM for non-volatile data storage, an internal 8.4 MHz bus clock derived from the on-chip oscillator, and the standard HC08 peripheral set. The 52-pin PLCC package provides ample I/O for automotive body, appliance, and industrial control applications and supports surface-mount assembly with J-leads.
Architecturally, the device uses the enhanced CPU08 core, which adds a few instructions and addressing modes over the original HC08 core while preserving code compatibility. The FLASH/EEPROM split enables field re-programmability for calibration data and protocol parameters, a useful feature for late-stage product customization or firmware updates.
Typical applications include automotive body controllers, HVAC controls, appliance motor control, industrial sensor interface boards, and legacy embedded systems requiring proven 8-bit processing. The HC08AS/AZ family was widely adopted in automotive clusters and instrument panels.
When designing with this MCU, note the End-of-Life status - qualify a successor early or commit to a last-time-buy inventory plan. Engineers should also evaluate migration paths to the S08 or S12 families for new designs since tooling, compilers, and development support for legacy HC08 parts are increasingly community-maintained.
This page synthesizes distributor inventory data, drop-in replacement candidates from the HC08 family, and practical design considerations not found in the original manufacturer datasheet.
Drop-in alternatives for MC908AS60ACFNE — 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 MC908AS60ACFNE (same form factor and footprint) — differing in Core Architecture, EEPROM Size, Mounting Type, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC908AS60ACFN
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$10.45 / Unit
View Datasheet →MC908AS60ACFNR2
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC908AS60ACFU
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC908AS60ACFNE
✅ Drop-In✓ In Stock
$9.85 / Unit
View Datasheet →MC908AZ60ACFNE
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC908AS60ACFNE Maximum Ratings & Electrical Characteristics
| Core Processor | HC08 (CPU08) |
| Core Architecture | 8-bit M68HC08 |
| Family | HC08AS/AZ (MC908AS60 series) |
| Program Memory Size | 60 KB (60K x 8) FLASH |
| EEPROM Size | 2 KB (2K x 8) |
| Maximum Clock Frequency | 8.4 MHz |
| Package | 52-PLCC (J-Lead), 19.1 x 19.1 mm |
| Mounting Type | Surface Mount |
MC908AS60ACFNE Pin Configuration
| Pin 1 | IRQ — External interrupt request input |
| Pin 2 | TCLK — Timer external clock input |
| Pin 3 | PTA0/KBD0 — Port A bit 0 / keyboard wakeup |
| Pin 4 | PTA1/KBD1 — Port A bit 1 / keyboard wakeup |
| Pin 5 | PTA2/KBD2 — Port A bit 2 / keyboard wakeup |
| Pin 6 | PTA3/KBD3 — Port A bit 3 / keyboard wakeup |
| Pin 7 | PTA4/KBD4 — Port A bit 4 / keyboard wakeup |
| Pin 8 | PTA5/KBD5 — Port A bit 5 / keyboard wakeup |
| Pin 9 | PTA6/KBD6 — Port A bit 6 / keyboard wakeup |
| Pin 10 | PTA7/KBD7 — Port A bit 7 / keyboard wakeup |
| Pin 11 | VSS — Ground |
| Pin 12 | VDD — Positive supply voltage |
| Pin 13 | PTB0/ADC0 — Port B bit 0 / ADC channel 0 |
| Pin 14 | PTB1/ADC1 — Port B bit 1 / ADC channel 1 |
| Pin 15 | PTB2/ADC2 — Port B bit 2 / ADC channel 2 |
| Pin 16 | PTB3/ADC3 — Port B bit 3 / ADC channel 3 |
| Pin 17 | PTB4/ADC4 — Port B bit 4 / ADC channel 4 |
| Pin 18 | PTB5/ADC5 — Port B bit 5 / ADC channel 5 |
| Pin 19 | PTB6/ADC6 — Port B bit 6 / ADC channel 6 |
| Pin 20 | PTB7/ADC7 — Port B bit 7 / ADC channel 7 |
| Pin 21 | PTC0 — Port C bit 0 |
| Pin 22 | PTC1 — Port C bit 1 |
| Pin 23 | PTC2 — Port C bit 2 |
| Pin 24 | PTC3 — Port C bit 3 |
| Pin 25 | PTC4 — Port C bit 4 |
| Pin 26 | PTC5 — Port C bit 5 |
| Pin 27 | PTC6 — Port C bit 6 |
| Pin 28 | PTC7 — Port C bit 7 |
| Pin 29 | PTD0/SS — Port D bit 0 / SPI slave select |
| Pin 30 | PTD1/MISO — Port D bit 1 / SPI MISO |
| Pin 31 | PTD2/MOSI — Port D bit 2 / SPI MOSI |
| Pin 32 | PTD3/SPSCK — Port D bit 3 / SPI clock |
| Pin 33 | PTD4/TxD — Port D bit 4 / SCI transmit |
| Pin 34 | PTD5/RxD — Port D bit 5 / SCI receive |
| Pin 35 | PTD6 — Port D bit 6 |
| Pin 36 | PTD7 — Port D bit 7 |
| Pin 37 | PTE0 — Port E bit 0 |
| Pin 38 | PTE1 — Port E bit 1 |
| Pin 39 | PTE2 — Port E bit 2 |
| Pin 40 | PTE3 — Port E bit 3 |
| Pin 41 | PTE4 — Port E bit 4 |
| Pin 42 | PTE5 — Port E bit 5 |
| Pin 43 | PTE6 — Port E bit 6 |
| Pin 44 | PTE7 — Port E bit 7 |
| Pin 45 | OSC1 — Crystal oscillator input |
| Pin 46 | OSC2 — Crystal oscillator output |
| Pin 47 | RESET — Reset input (active low) |
| Pin 48 | BKGD/MS — Background debug mode / mode select |
| Pin 49 | VPP — FLASH programming voltage |
| Pin 50 | VSS — Ground |
| Pin 51 | VDD — Positive supply voltage |
| Pin 52 | NC — Not connected (per datasheet) |
Typical Applications
MC908AS60ACFNE is suitable for 6 applications: Automotive Body Controller, HVAC Control Module, Appliance Motor Controller, Industrial Sensor Interface Board, Automotive Instrument Cluster, Legacy Embedded System Maintenance.
Automotive Body Controller
The MC908AS60ACFNE's 60KB FLASH, 2KB EEPROM, and 8.4 MHz CPU08 core suit automotive body controllers managing door locks, window lifts, seat memories, and lighting. The HC08 deterministic interrupt handling and 52-PLCC package with socket compatibility made this part a 2000s-era workhorse for body electronics. Its EEPROM supports persistent configuration storage for VIN-linked personalization data that survives battery disconnect. The EOL status requires lifecycle planning: qualify a S08 or S12 successor now or commit to a last-time-buy inventory buffer sized to cover the program's production lifetime.
Recommended
HVAC Control Module
HVAC control modules require deterministic response to sensor inputs and reliable actuator drive sequencing, both of which the MC908AS60ACFNE's 8-bit CPU08 core delivers at 8.4 MHz. The 60KB FLASH holds the blower, blend-door, and temperature-control algorithms; the 2KB EEPROM stores calibration coefficients learned during factory test. With ample I/O on the 52-PLCC package, the MCU interfaces directly to NTC temperature sensors, potentiometer inputs, and backlight drivers without external I/O expanders. Migration to the S08 family is straightforward for new HVAC designs.
Recommended
Appliance Motor Controller
Washing machines, dishwashers, and dryers historically used the HC08AS/AZ family for motor timing, pump control, and user-interface management. The MC908AS60ACFNE's 8.4 MHz core and 2KB EEPROM handle brushed and BLDC motor commutation tables plus wash-cycle state machines with deterministic timing. PLCC packaging enables through-hole or socketed assembly for service-friendly appliance designs. The EOL transition means appliance OEMs must re-qualify firmware on the S08 platform or commit to a multi-year last-time-buy stockpile sized to the appliance's market life.
Recommended
Industrial Sensor Interface Board
Industrial sensor interface boards aggregate 4-20 mA loops, thermocouples, and digital inputs into a network-attached module. The MC908AS60ACFNE's 8-bit CPU08 and 60KB FLASH are well-suited to protocol conversion (Modbus RTU to HART or proprietary buses), with the 2KB EEPROM storing calibration coefficients and node configuration. Its deterministic interrupt response suits time-critical sensor polling. For new industrial designs, the S08 family with enhanced peripherals and longer lifecycle is preferred, but the legacy MC908AS60ACFNE continues to serve installed bases and retrofits.
Recommended
Automotive Instrument Cluster
Instrument clusters of the late 1990s and 2000s relied on HC08-family MCUs to drive stepper-motor gauges, read speedometer/tachometer inputs, and manage warning lamps. The MC908AS60ACFNE's 8.4 MHz bus clock and 60KB FLASH drove stepper motor control loops for fuel and temperature gauges, plus odometer storage in EEPROM. Its 52-PLCC footprint was common across multiple cluster programs. Modern replacements use S12 or S08 derivatives; existing production continues to source this EOL part through authorized distributors.
Recommended
Legacy Embedded System Maintenance
Long-life programs in industrial automation, building controls, and military systems continue to use the MC908AS60ACFNE because the firmware was qualified years ago and re-certification costs are prohibitive. The part's EOL status triggers last-time-buy inventory planning: OEMs must forecast remaining production volume and place a single bulk purchase. Authorized distributors hold remaining stock; aftermarket brokers and obsolete-parts specialists provide secondary sourcing. EEPROM-backed configuration data preserves system calibration across decades of operation.
Recommended
Recommended Products Summary
Engineering reference data for MC908AS60ACFNE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC908AS60ACFN | MC908AS60ACFNR2 | MC908AS60ACFU | MC908AS60ACFNE | MC908AZ60ACFNE |
|---|---|---|---|---|---|---|
| Package | 52-PLCC (J-Lead) | 52-PLCC (J-Lead) - same | 52-PLCC (J-Lead) - same | 52-PLCC (J-Lead) - same | 52-PLCC (J-Lead) - same | 52-PLCC (J-Lead) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HC08 (CPU08) 8-bit | HC08 (CPU08) 8-bit | HC08 (CPU08) 8-bit | HC08 (CPU08) 8-bit | HC08 (CPU08) 8-bit | HC08 (CPU08) 8-bit |
| FLASH Memory | 60 KB | 60 KB | 60 KB | 60 KB | 60 KB | 60 KB |
| EEPROM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Max Clock | 8.4 MHz | 8.4 MHz | 8.4 MHz | 8.4 MHz | 8.4 MHz | 8.4 MHz |
| Pin Count | 52 | 52 | 52 | 52 | 52 | 52 |
| Lifecycle Status | EOL | EOL | EOL | EOL | EOL | EOL |
| AEC-Q100 Qualified | Unknown | Unknown | Unknown | Unknown | Unknown | Unknown |
Key Differentiators
- Established automotive body-control heritage (vs MC908AS60ACFN (same die, tube packaging))
- HC08AZ60 variant available in same package (vs MC908AZ60ACFNE)
- 52-PLCC socket-friendly package (vs Modern QFP/LQFP MCU packages)
Design Notes
Because the MC908AS60ACFNE is in End-of-Life status, the most critical design consideration is lifecycle planning. For new designs, qualify the S08AC family (e.g., MC9S08AC60CFGE) immediately rather than building inventory around an EOL part. For existing production, place a last-time-buy sized to your entire product lifetime plus a safety buffer for warranty service. Counterfeit risk rises sharply on EOL 8-bit MCUs; purchase only from authorized distributors with full traceability documentation.
Place the HC08 decoupling capacitors (typically 100 nF ceramic plus 10 uF bulk) as close to VDD/VSS pins as physically possible. The 52-PLCC package has two VDD and two VSS pins on opposite sides - place one 100 nF cap per VDD pin. Route the OSC1/OSC2 crystal traces short and symmetric, surrounded by ground pour, to minimize EMI and ensure stable clock startup. Keep the RESET pin trace short and add a 10 kohm pullup to VDD if the application environment has noise.
The FLASH and EEPROM endurance specifications must be respected: EEPROM typically supports 100k write cycles minimum, FLASH 10k cycles. Implement wear-leveling or store changing data in RAM backed by a battery/supercap rather than burning EEPROM cycles on hot counters. Use the HC08 BDM interface for in-circuit programming during development - production programming should use a standalone programmer for faster throughput.
Compliance Information
Compliance documentation not provided in verified web data. Check specific lot certificate of conformance with the distributor. Many 2000s-era HC08 parts were produced in both lead-free and leaded finishes depending on date code.
