MC908AP64ACBE - HC08 8-Bit 8MHz 64KB FLASH MCU 42-SDIP | NXP
Référence : MC908AP64ACBE ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $14.5 | $14,50 |
| 10 | $13.2 | $132,00 |
| 100 | $11.85 | $1 185,00 |
| 250 | $10.5 | $2 625,00 |
| 500 | $9.45 | $4 725,00 |
MC908AP64ACBE Présentation
What is an HC08 microcontroller? The HC08 is an 8-bit CISC microcontroller architecture from the Freescale/NXP M68HC08 family. It belongs to the broader hierarchy: microcontroller -> embedded MCU -> single-chip computer -> semiconductor. HC08 devices evolved from the earlier M68HC05 architecture, adding a wider instruction set, enhanced addressing modes, a low-power STOP/WAIT mode, and on-chip FLASH program memory. The 'AP' suffix denotes the HC08AP variant, which includes an internal high-speed oscillator and Phase-Locked Loop (PLL) option, allowing operation from a low-frequency external crystal or resonator while the internal bus runs at the higher 8MHz rate.
Key features include 64KB (64K x 8) FLASH program memory, 2KB (2K x 8) RAM, 30 I/O pins, internal oscillator with PLL, and on-chip peripherals covering LED drivers, Low-Voltage Detect (LVD), Power-On Reset (POR), Pulse-Width Modulation (PWM) channels, and serial communication interfaces (SCI, SPI, I2C). The 5V single-supply operation simplifies analog interface design.
The CPU08 core implements a CISC instruction set with up to 16 addressing modes, supporting efficient C and assembly code generation. The internal bus architecture integrates FLASH for program storage and RAM for data, allowing single-chip operation. The HC08AP variant's PLL-based clock system trades an external high-frequency crystal for cost savings.
Typical applications include industrial control, automotive body electronics, white-goods motor control, security systems, and consumer appliance control. Designers select this MCU for legacy Freescale/NXP code reuse, FLASH-based in-application reprogrammability, and the SDIP through-hole package that supports prototyping and field-serviceable designs.
When designing with this part, note that the SDIP-42 footprint requires through-hole PCB assembly; engineers migrating to surface-mount should select the 44-pin QFP variant of the same die. Always confirm FLASH endurance (typically 100K cycles) and retention specifications against the in-application update requirements.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour MC908AP64ACBE — 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 MC908AP64ACBE (même facteur de forme et même empreinte) — différant par Mounting Type, Oscillator Type, Packaging, ADC, Core.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC908AP32ACBE
✅ Remplacement direct✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →MC908AP16ACBE
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$5.4 / unité
Voir la fiche technique →MC908AP64ACBE Valeurs maximales et caractéristiques électriques
| Core Processor | HC08 CPU08 |
| Core Size | 8-Bit |
| Core Architecture | CISC |
| Series | HC08 / MC908AP64 |
| Speed (Bus Frequency) | 8 MHz |
| Program Memory Size | 64 KB (64K x 8) FLASH |
| RAM Size | 2 KB (2K x 8) |
| EEPROM Size | Not present |
| Number of I/O | 30 |
| Connectivity | I2C, IRSCI, SCI, SPI |
| Peripherals | LED driver, LVD, POR, PWM |
| Oscillator Type | Internal (with PLL, HS-OSC version) |
| Tension d'alimentation de fonctionnement | 5 V |
| Boîtier / Format | 42-SDIP (0.600", 15.24mm) |
| Type de montage | Through-Hole |
| Packaging | Tube |
Configuration des broches de MC908AP64ACBE
| Broche 1 | IRQ — External interrupt request |
| Broche 2 | PTA0 — Port A I/O bit 0 |
| Broche 3 | PTA1 — Port A I/O bit 1 |
| Broche 4 | PTA2 — Port A I/O bit 2 |
| Broche 5 | PTA3 — Port A I/O bit 3 |
| Broche 6 | VDD — Supply voltage (5V) |
| Broche 7 | VSS — Ground |
| Broche 8 | PTB0 — Port B I/O bit 0 |
| Broche 9 | PTB1 — Port B I/O bit 1 |
| Broche 10 | PTB2 — Port B I/O bit 2 |
| Broche 11 | PTB3 — Port B I/O bit 3 |
| Broche 12 | PTB4 — Port B I/O bit 4 |
| Broche 13 | PTB5 — Port B I/O bit 5 |
| Broche 14 | PTB6 — Port B I/O bit 6 |
| Broche 15 | PTB7 — Port B I/O bit 7 |
| Broche 16 | PTC0 — Port C I/O bit 0 |
| Broche 17 | PTC1 — Port C I/O bit 1 |
| Broche 18 | PTC2 — Port C I/O bit 2 |
| Broche 19 | PTC3 — Port C I/O bit 3 |
| Broche 20 | PTC4 — Port C I/O bit 4 |
| Broche 21 | PTC5 — Port C I/O bit 5 |
| Broche 22 | PTC6 — Port C I/O bit 6 |
| Broche 23 | PTC7 — Port C I/O bit 7 |
| Broche 24 | PTD0 — Port D I/O bit 0 (TxD) |
| Broche 25 | PTD1 — Port D I/O bit 1 (RxD) |
| Broche 26 | PTD2 — Port D I/O bit 2 |
| Broche 27 | PTD3 — Port D I/O bit 3 |
| Broche 28 | PTD4 — Port D I/O bit 4 |
| Broche 29 | PTD5 — Port D I/O bit 5 |
| Broche 30 | OSC1 — Oscillator input |
| Broche 31 | OSC2 — Oscillator output |
| Broche 32 | VDD — Supply voltage (5V) |
| Broche 33 | VSS — Ground |
| Broche 34 | PTE0 — Port E I/O bit 0 |
| Broche 35 | PTE1 — Port E I/O bit 1 |
| Broche 36 | PTE2 — Port E I/O bit 2 |
| Broche 37 | PTE3 — Port E I/O bit 3 |
| Broche 38 | RESET — Reset input (active low) |
| Broche 39 | PTE4 — Port E I/O bit 4 |
| Broche 40 | PTE5 — Port E I/O bit 5 |
| Broche 41 | PTE6 — Port E I/O bit 6 |
| Broche 42 | PTE7 — Port E I/O bit 7 |
Applications typiques
MC908AP64ACBE convient pour 6 applications: Industrial Control Systems, Automotive Body Electronics, White Goods / Appliance Control, Security and Access Control Panels, Consumer Electronics Remote Controllers, HVAC Control Modules.
Industrial Control Systems
The MC908AP64ACBE's 8MHz HC08 core, 64KB FLASH, and integrated PWM channels make it suitable for industrial PLC interfaces, sensor conditioning boards, and discrete machine control modules. Its 30 I/O pins handle multiple digital inputs and outputs simultaneously, while the SCI/SPI interfaces connect to operator panels or supervisory controllers. The on-chip LED drivers simplify status indication without external transistors. Operating from a 5V supply and featuring Low-Voltage Detect (LVD) and Power-On Reset (POR), the part tolerates industrial power-rail transients and brown-outs typical of factory environments. Engineers value the HC08 instruction set for compact, deterministic control code in legacy industrial installations.
Recommandé
Automotive Body Electronics
The MC908AP64ACBE fits legacy automotive body-control modules including central locking, mirror control, and interior lighting controllers. Its 64KB FLASH accommodates protocol stacks (LIN, KWP2000) and feature logic, while the 2KB RAM supports runtime data buffers. The PWM channels drive LED dimming and motor speed control for fans and actuators. SCI and SPI interfaces link to body control networks, and the integrated LVD/POR ensure clean startup under automotive battery transients. The 42-SDIP package suits low-volume aftermarket modules and field-replaceable assemblies where through-hole construction is preferred for serviceability.
Recommandé
White Goods / Appliance Control
The MC908AP64ACBE is widely used in washing-machine controllers, dishwasher control boards, refrigerator display modules, and microwave oven interfaces. Its 64KB FLASH holds appliance-specific firmware including motor control algorithms, user-interface logic, and fault detection routines. The integrated PWM channels drive variable-speed motor control, while SCI/SPI interfaces connect to user-interface boards, sensor arrays, and display drivers. The internal oscillator with PLL simplifies BOM by eliminating external high-frequency crystals, reducing cost in cost-sensitive appliance markets. The 5V supply aligns with typical appliance power architectures.
Recommandé
Security and Access Control Panels
The MC908AP64ACBE suits legacy security alarm panels, access-control keypads, and intrusion-detection modules. Its 64KB FLASH stores zone-configuration logic, communication protocols, and event-logging firmware, while the 2KB RAM buffers sensor polling and keypad debounce state. The integrated SCI provides RS-232/485 communication to central monitoring stations, and SPI interfaces connect to keypad scanners and expansion modules. The on-chip LED drivers directly drive panel status LEDs without external transistors, saving PCB area. The 42-SDIP package supports field-serviceable panel designs where through-hole replacement is advantageous.
Recommandé
Consumer Electronics Remote Controllers
The MC908AP64ACBE is used in universal remote controllers, smart-home hubs, and consumer audio control interfaces. Its 64KB FLASH accommodates IR protocol libraries, button-mapping tables, and feature-mode firmware. The integrated IRSCI peripheral directly handles infrared encoding/decoding, offloading timing-critical tasks from the CPU. SCI and I2C interfaces connect to wireless modules, displays, and audio codecs. Low-power STOP/WAIT modes extend battery life in handheld remotes, while the internal oscillator eliminates the need for external high-frequency crystals. The 30 I/O pins support matrix-scanned keypads and LED feedback.
Recommandé
HVAC Control Modules
The MC908AP64ACBE fits HVAC thermostat controllers, fan-speed controllers, and zone damper actuators. Its 64KB FLASH holds scheduling logic, PID control algorithms, and communication firmware, while the 2KB RAM supports temperature history buffers and runtime state. The PWM channels regulate fan speed and damper position, while the SCI/SPI interfaces connect to indoor/outdoor unit communication networks. The integrated ADC channels (on related family members) measure temperature sensors, and the LVD/POR ensure clean operation across HVAC power-supply fluctuations. The 42-SDIP package suits legacy through-hole HVAC control boards.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC908AP64ACBE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC908AP32ACBE | MC908AP16ACBE |
|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors - same brand | NXP Semiconductors - same brand |
| Package | 42-SDIP (0.600") | 42-SDIP - same | 42-SDIP - same |
| FLASH Memory | 64 KB | 32 KB (-50%) | 16 KB (-75%) |
| RAM Size | 2 KB | 2 KB - same | 2 KB - same |
| CPU Core | HC08 CPU08 | HC08 CPU08 - same | HC08 CPU08 - same |
| Bus Frequency | 8 MHz | 8 MHz - same | 8 MHz - same |
| Number of I/O | 30 | 30 - same | 30 - same |
| Supply Voltage | 5 V | 5 V - same | 5 V - same |
| Lifecycle Status | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- High-speed internal oscillator variant (vs MC908AP64AB (low-speed external oscillator version))
- Maximum FLASH in the 42-SDIP package (vs MC908AP32ACBE (32KB) and MC908AP16ACBE (16KB))
- Through-hole SDIP package (vs MC908AP64CFBE (44-QFP surface-mount))
Notes de conception
The MC908AP64ACBE operates from a single 5V supply with internal LVD and POR. Decouple VDD with a 100nF ceramic capacitor placed within 5mm of each VDD pin, plus a 10uF bulk tantalum or electrolytic capacitor at the supply entry point. The internal voltage regulator feeds the FLASH memory; ensure stable 5V rail during in-application reprogramming to avoid partial-write corruption of FLASH pages.
The MC908AP64ACBE is the high-speed internal oscillator variant of the HC08AP family. An external 32kHz watch crystal or 1-8MHz resonator can be used with the internal PLL to derive the 8MHz bus clock, eliminating external high-frequency crystals and reducing BOM cost. Layout the OSC1/OSC2 traces short and surrounded by ground pour to minimize EMI pickup; route away from PWM switching signals.
FLASH program memory on the MC908AP64ACBE has a limited erase/write endurance (typically 10K-100K cycles depending on revision). Implement wear-leveling or EEPROM emulation techniques for non-volatile data storage. Do not exceed 5.5V on VDD or allow reverse polarity - the part lacks internal ESD protection diodes on the supply pins. Use the LVD to detect brown-out conditions before FLASH writes commence.
Informations de conformité
Compliance status not provided in verified data. The HC08AP family pre-dates strict RoHS enforcement; non-RoHS lead-bearing SDIP variants may exist. Confirm with distributor for specific lot compliance.
