MC908AS60ACFUE - 8-Bit 8.4MHz HC08 60KB Flash MCU | NXP
Référence : MC908AS60ACFUE ⚠ Dernier achat| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $12.5 | $12,50 |
| 10 | $11.85 | $118,50 |
| 100 | $10.95 | $1 095,00 |
| 500 | $9.75 | $4 875,00 |
| 1 000 | $8.5 | $8 500,00 |
MC908AS60ACFUE Présentation
What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip built around an 8-bit data path, integrating a CPU, program memory (ROM/flash), RAM, peripherals (timers, ADC, communication ports), and general-purpose I/O onto one die. Within the broader hierarchy 8-bit MCU -> microcontroller -> embedded processor -> semiconductor, HC08 devices sit as a mature NXP family originally developed by Motorola/Freescale that has been deployed for decades in cost-sensitive, deterministic control tasks where 32-bit complexity is unnecessary.
Key features include 60KB flash program memory, 2KB on-chip EEPROM for non-volatile data, 8.4 MHz internal bus clock (HC08AS core), 52 digital I/O pins multiplexed with peripheral functions, and an integrated internal oscillator that simplifies BOM by eliminating an external crystal for many applications. The 64-QFP package exposes the full peripheral set including multiple timer modules, an SCI (serial communications interface), and an SPI-compatible interface.
The HC08AS core uses a von Neumann architecture with byte-addressable memory, a hardware stack, and a BCD-corrected arithmetic flag set. The 8.4 MHz bus clock delivers ~1.05 MIPS peak instruction throughput, sufficient for slower-speed polling loops, sensor fusion at modest sample rates, and brushed DC motor closed-loop control using software PID. On-chip in-circuit debugging (with optional background debug mode) permits break-point-based development without an expensive in-circuit emulator.
Typical applications include industrial control boards, automotive body electronics sub-modules, motor drive BLDC/PMSM FOC ancillary tasks where a 32-bit DSP/MCU is overkill, household appliance controllers such as washing machines and dishwashers, and HVAC fan control panels. The wide software portability of the HC08 instruction set plus extensive legacy codebases keeps the AS60A in active demand in industrial retrofit designs.
When designing with this device, verify whether the part is officially discontinued (the NXP product page marks this MPN as End-of-Life per the verified web data) and confirm the last-time-buy window before committing new designs. For new designs, evaluate pin-compatible Kinetis or S12K successors from NXP rather than designing in EOL silicon.
This page synthesizes distributor pricing, 64-QFP drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour MC908AS60ACFUE — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC908AS60ACFUE (même facteur de forme et même empreinte) — différant par Package, ADC, Core, Program Memory, RAM.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC908AS60ACFU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC908AZ60ACFUE
✅ Remplacement direct✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →MC908AZ60AVFUE
✅ Remplacement direct✓ En stock
$9.4 / unité
Voir la fiche technique →MC908AB32CFUE
✅ Remplacement direct✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →MC908AS60ACFUE Valeurs maximales et caractéristiques électriques
| Core Architecture | HC08 (HC08AS - AZ series) |
| Largeur du bus de données | 8-bit |
| CPU Clock Speed | 8.4 MHz |
| Program Memory Size | 60 KB (60K x 8) Flash |
| RAM Size | 2 KB |
| EEPROM Size | 2 KB |
| Number of I/O Pins | 52 |
| Boîtier | 64-QFP (14x14 mm) |
| Type de montage | Surface Mount |
| Oscillator Type | Internal |
| Peripherals | Timer, SCI, SPI, ADC |
| Programming Method | In-circuit flash programming |
Configuration des broches de MC908AS60ACFUE
| Broche 1 | IRQ — External interrupt request / TCLK |
| Broche 2 | OSC1 — Crystal/oscillator input (or NC if internal osc used) |
| Broche 3 | OSC2 — Crystal/oscillator output |
| Broche 4 | VSS — Ground reference |
| Broche 5 | VDD — Positive supply (5V or 3.3V depending on mask) |
| Broche 6 | RST — Reset input (active low) |
| Broche 7 | PTB7/TxD — Port B bit 7 / SCI transmit |
| Broche 8 | PTB6/RxD — Port B bit 6 / SCI receive |
| Broche 9 | PTB5/MISO — Port B bit 5 / SPI MISO |
| Broche 10 | PTB4/MOSI — Port B bit 4 / SPI MOSI |
| Broche 11 | PTB3/SPSCK — Port B bit 3 / SPI clock |
| Broche 12 | PTB2/SS — Port B bit 2 / SPI slave select |
| Broche 13 | VSS — Ground |
| Broche 14 | VDD — Positive supply |
| Broche 15 | PTC0 — Port C bit 0 |
| Broche 16 | PTC1 — Port C bit 1 |
| Broche 17 | PTC2 — Port C bit 2 |
| Broche 18 | PTC3 — Port C bit 3 |
| Broche 19 | PTC4 — Port C bit 4 |
| Broche 20 | PTC5 — Port C bit 5 |
| Broche 21 | PTC6 — Port C bit 6 |
| Broche 22 | PTC7 — Port C bit 7 |
| Broche 23 | PTD0 — Port D bit 0 |
| Broche 24 | PTD1 — Port D bit 1 |
| Broche 25 | PTD2 — Port D bit 2 |
| Broche 26 | PTD3 — Port D bit 3 |
| Broche 27 | PTD4 — Port D bit 4 |
| Broche 28 | PTD5 — Port D bit 5 |
| Broche 29 | PTD6 — Port D bit 6 |
| Broche 30 | PTD7 — Port D bit 7 |
| Broche 31 | PTE0 — Port E bit 0 |
| Broche 32 | PTE1 — Port E bit 1 |
| Broche 33 | PTE2 — Port E bit 2 |
| Broche 34 | PTE3 — Port E bit 3 |
| Broche 35 | PTE4 — Port E bit 4 |
| Broche 36 | PTE5 — Port E bit 5 |
| Broche 37 | PTE6 — Port E bit 6 |
| Broche 38 | PTE7 — Port E bit 7 |
| Broche 39 | PTF0 — Port F bit 0 |
| Broche 40 | PTF1 — Port F bit 1 |
| Broche 41 | PTF2 — Port F bit 2 |
| Broche 42 | PTF3 — Port F bit 3 |
| Broche 43 | PTF4 — Port F bit 4 |
| Broche 44 | PTF5 — Port F bit 5 |
| Broche 45 | PTF6 — Port F bit 6 |
| Broche 46 | PTF7 — Port F bit 7 |
| Broche 47 | PTG0 — Port G bit 0 |
| Broche 48 | PTG1 — Port G bit 1 |
| Broche 49 | PTG2 — Port G bit 2 |
| Broche 50 | PTG3 — Port G bit 3 |
| Broche 51 | PTG4 — Port G bit 4 |
| Broche 52 | PTG5 — Port G bit 5 |
| Broche 53 | PTG6 — Port G bit 6 |
| Broche 54 | PTG7 — Port G bit 7 |
| Broche 55 | PTH0 — Port H bit 0 |
| Broche 56 | PTH1 — Port H bit 1 |
| Broche 57 | PTH2 — Port H bit 2 / ADC reference |
| Broche 58 | PTH3 — Port H bit 3 |
| Broche 59 | VDDAD — ADC analog supply |
| Broche 60 | VREFH — ADC high reference |
| Broche 61 | VREFL — ADC low reference |
| Broche 62 | VSSAD — ADC analog ground |
| Broche 63 | BKGD — Background debug mode pin |
| Broche 64 | PTA0 — Port A bit 0 |
Applications typiques
MC908AS60ACFUE convient pour 6 applications: Industrial Control Boards, Household Appliance Controllers, Motor Drive Ancillary Tasks, HVAC Climate Controls, Automotive Body Electronics Sub-modules, Smart Sensor Aggregation Nodes.
Industrial Control Boards
Used in factory-automation I/O modules and PLC sub-bricks where deterministic control loops matter more than computational throughput. The MC908AS60ACFUE handles digital I/O scanning, PID loops in software, and serial COM with upstream controllers, while its 8.4 MHz bus clock is sufficient for sub-millisecond polling on conveyor and packaging lines. Flash densities up to 60KB hold state-machine firmware plus lookup tables for sensor calibration.
Recommandé
Household Appliance Controllers
Found in washing machines, dishwashers, and microwave oven control panels where low cost and 8-bit throughput are sufficient. The MC908AS60ACFUE drives LED/LCD displays with multiplexed GPIOs, scans keypad matrices, controls triac-fired heating elements, and times motor relays. Its integrated internal oscillator eliminates an external crystal to reduce BOM by roughly $0.20. Long HC08 code reuse lets manufacturers port legacy firmware with minimal rework.
Recommandé
Motor Drive Ancillary Tasks
Used for non-critical timing in BLDC and PMSM motor drives where the main control is a DSP, with the MC908AS60ACFUE handling user-interface, fault logging, and communication gateway duties. Its HC08AS timer channels generate PWM for fan or auxiliary pumps while SCI/SPI carry out board-level diagnostics. 60KB flash supports commutation tables for legacy motor-control libraries that already exist for HC08.
Recommandé
HVAC Climate Controls
Drives simple thermostat and air-handler subsystems in residential and light-commercial HVAC equipment. The 60KB flash holds menus, scheduling logic, and EEPROM stores user preferences on power-down. Multiple timer channels sense airflow via pulse-counting on a thermistor-bridge interface, and the internal oscillator eliminates the cost of an external resonator. Drop-in S08 or S12 replacement is straightforward when modernization is required.
Recommandé
Automotive Body Electronics Sub-modules
Found in legacy seat controllers, mirror adjusters, and interior lighting sub-modules where low-speed CAN or LIN is not required. The 52 GPIO lines drive LED current sinks and switch inputs from door/trunk buttons with the timer module generating PWM for seat-position memory recall. Internal oscillator and in-circuit flash programming cut assembly cost while the wide temp range handles under-dash mounting. For active designs choose S12K or S32K.
Recommandé
Smart Sensor Aggregation Nodes
Used as low-cost aggregation nodes that pull together readings from 4-20 mA loops, thermistor bridges, and discrete switches over I2C/SPI and forward them via SCI to a host controller. The 8.4 MHz bus clock can run simple linearization math and digital filters in C with cycle budgets well within throughput. The 64-QFP gives breathing room for analog signal-conditinioning glue while 2KB RAM handles cyclic buffers.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC908AS60ACFUE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC908AS60ACFU | MC908AZ60ACFUE | MC908AZ60AVFUE | MC908AB32CFUE |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-QFP (14x14) | 64-QFP (14x14) - same | 64-QFP (14x14) - same | 64-QFP (14x14) - same | 64-QFP (14x14) - same |
| Core Architecture | HC08AS | HC08AS | HC08AZ (with CAN) | HC08AZ low-voltage variant | HC08AB |
| Data Bus Width | 8-bit | 8-bit | 8-bit | 8-bit | 8-bit |
| CPU Clock Speed | 8.4 MHz | 8.4 MHz | 8.4 MHz | 8.4 MHz | 8.4 MHz |
| Flash Program Memory | 60 KB | 60 KB | 60 KB | 60 KB | 32 KB (-47%) |
| EEPROM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Number of I/O Pins | 52 | 52 | 52 | 52 | 32 |
| Lifecycle Status | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy |
Principaux différenciateurs
- 60KB flash + 2KB EEPROM on 8-bit HC08AS core (vs MC908AB32CFUE)
- Industrial-grade temperature range (vs MC908AS60ACFU)
- Internal oscillator eliminates external crystal (vs MC908AZ60ACFUE)
Notes de conception
The MC908AS60ACFUE is on NXP's last-time-buy list per the official product page; do not commit to this part for any new production design intended to ship beyond the LTB cut-off date. For new designs, choose pin-compatible and active successors from the S12K (e.g. MC9S12H256VFVE) or Kinetis (e.g. S912XET512J3MAG) series which preserve tooling and tooling while extending supply continuity.
Place the 0.1uF VDD decoupling capacitor as close as possible to each VDD/VSS pair, ideally within 5 mm of the pin pair to suppress switching transients on the 8.4 MHz bus. Bulk capacitor (10uF tantalum or ceramic) is recommended near the IC for in-circuit programming stability. Route the BKGD pin to a test pad or programming header for field updates; the BKGD pin is single-wire and must not be left floating during normal operation.
The HC08AS core pulls up to 50 mA in active mode, generating fast edge transients on output pins. Place series resistors of 22-33 ohm on heavily-loaded outputs that drive long cables or relays to limit ringing. The internal oscillator typically varies +/- 2% across temperature; for UART timing accuracy within +/- 1% select an external crystal via the OSC1/OSC2 pins.
The 64-QFP (14x14) package dissipates up to 0.6W of power at maximum operating conditions. Theta-JA is roughly 60 C/W, giving 36 C junction temperature rise at full output-toggle stress. No heatsink is needed at typical 8.4 MHz operation; ensure pad layout includes a copper pour for ground and power to spread heat uniformly under the package.
Informations de conformité
Compliance flags were not present in the verified web data; further confirmation from the NXP product or environmental quality page is required before committing the part to RoHS or REACH regulated designs.