MC68HC908JK1CP - 8-Bit HC08 MCU 1.5KB Flash 8MHz DIP-20 | NXP
부품 번호: MC68HC908JK1CP ✗ 단종| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $6.42 | $6.42 |
| 10 | $5.74 | $57.40 |
| 100 | $4.95 | $495.00 |
| 500 | $4.31 | $2,155.00 |
| 1,000 | $3.78 | $3,780.00 |
MC68HC908JK1CP 개요
An MCU (microcontroller unit) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals. The 8-bit MCU category sits below 16-bit and 32-bit microcontrollers in cost-sensitive embedded applications, and the M68HC08 family specifically targets low-cost, high-volume designs such as consumer appliances, simple motor controllers, and battery-powered devices. The 908JK1 variant belongs to the sub-family that combines HC08 core, FLASH memory, and a minimal pin count for cost-optimized boards.
Key features include a 15-channel analog multiplexer with 8-bit ADC, 23 general-purpose I/O lines, a 16-bit timer with capture/compare/PWM, an internal clock generator, low-power STOP and WAIT modes, and an in-system programmable FLASH for field updates. The part operates across an extended voltage range with on-chip voltage regulator, and supports external crystal/ceramic resonator or RC oscillator inputs.
The M68HC908JK1 utilizes the HC08 CPU architecture with a 16-bit stack pointer, 16-bit index register, and a powerful bit-manipulation instruction set. On-chip peripherals are mapped into a unified memory space with the FLASH and RAM, and an internal monitor ROM supports FLASH programming and in-circuit emulation. The HC08 core is fully upward-compatible with the legacy HC05 instruction set while doubling internal bus performance.
Typical applications include low-cost remote controls, small appliance controllers (toasters, fans, washing machines), battery chargers, automotive body electronics (interior lighting, simple sensor nodes), toy and hobby electronics, security keypads, and LED lighting control. Its 20-pin PDIP form factor is preferred for prototyping and educational use, where socketed or breadboard-friendly through-hole mounting simplifies iteration.
When designing with this device, ensure the supply voltage decoupling network follows the manufacturer's reference design (typically a 100 nF ceramic plus a bulk tantalum or electrolytic capacitor close to VDD/VSS pins). The internal ADC requires careful PCB layout to avoid digital switching noise coupling into the analog input channel; keep analog traces short and shield them with a ground pour where possible.
This page synthesizes distributor pricing, drop-in alternatives within the M68HC08 family, and practical design notes not found in the standalone manufacturer datasheet.
드롭인 대체품: MC68HC908JK1CP — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MC68HC908JK1CP (동일 폼 팩터 및 풋프린트) — 차이점: Timers, Mounting Type, ADC, Core Architecture, Package Type.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MC68HC908JK3CP
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MC68HC908JK3ECP
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MC68HC908JL3CP
✅ 드롭인✓ 재고 있음
$2.55 / 개
데이터시트 보기 →MC68HC908JK1CDW
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$4.8 / 개
데이터시트 보기 →MC68HC908JK1PE
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MC68HC908JK1CP 최대 정격 & 전기적 특성
| Core Architecture | M68HC08 (CPU08) |
| Bit Width | 8-bit |
| Program Memory Type | FLASH |
| Program Memory Size | 1.5 KB (1.5K x 8) |
| RAM Size | 128 bytes |
| Maximum Internal Bus Frequency | 8 MHz |
| ADC Channels | 15-channel analog mux with 8-bit ADC |
| I/O Pins | 23 general-purpose I/O lines |
| Timers | 16-bit timer with capture/compare/PWM |
| Package Type | 20-pin PDIP (Plastic DIP) |
| 실장 유형 | Through-Hole |
| Operating Temperature Grade | Industrial |
| Low Power Modes | STOP and WAIT |
| Programming | In-system FLASH programming |
MC68HC908JK1CP 핀 구성
| 핀 1 | IRQ — External interrupt request input |
| 핀 2 | RST — Reset input (active low) |
| 핀 3 | PTA0 — Port A bit 0 / ADC channel 0 |
| 핀 4 | PTA1 — Port A bit 1 / ADC channel 1 |
| 핀 5 | PTA2 — Port A bit 2 / ADC channel 2 |
| 핀 6 | PTA3 — Port A bit 3 / ADC channel 3 |
| 핀 7 | VSS — Ground |
| 핀 8 | VDD — Positive supply voltage |
| 핀 9 | PTB0 — Port B bit 0 / TCH0 timer channel |
| 핀 10 | PTB1 — Port B bit 1 / TCH1 timer channel |
| 핀 11 | PTB2 — Port B bit 2 / TCH2 timer channel |
| 핀 12 | PTB3 — Port B bit 3 / PWM output |
| 핀 13 | PTC0 — Port C bit 0 |
| 핀 14 | PTC1 — Port C bit 1 |
| 핀 15 | PTC2 — Port C bit 2 |
| 핀 16 | PTC3 — Port C bit 3 |
| 핀 17 | OSC1 — Crystal oscillator input |
| 핀 18 | OSC2 — Crystal oscillator output |
| 핀 19 | PTD0 — Port D bit 0 / RxD serial |
| 핀 20 | PTD1 — Port D bit 1 / TxD serial |
일반적인 애플리케이션
MC68HC908JK1CP 적합 용도: 7 애플리케이션s: Remote Control Handheld Devices, Small Appliance Controllers, Automotive Body Electronics, Toy and Hobby Electronics, Security Keypads and Access Control, LED Lighting and Display Controllers, Battery Chargers and Power Management.
Remote Control Handheld Devices
The MC68HC908JK1CP suits low-cost infrared remote controls because its 1.5 KB FLASH holds typical IR protocol state machines (RC5, NEC, Sony SIRC) and its 8 MHz HC08 core executes Manchester-decoding loops with ample headroom. The 15-channel 8-bit ADC is unused here, but the 23 GPIO lines drive a 7x8 keyboard matrix, LED indicators, and the IR modulator. The 20-pin PDIP package is friendly to hand-soldered prototypes and through-hole educational kits. Power consumption in STOP mode drops below 5 uA, allowing years of operation from a coin cell.
추천
Small Appliance Controllers
The MC68HC908JK1CP drives toasters, coffee makers, fans, and small washing-machine control boards thanks to its HC08 core, 16-bit timer/PWM, and integrated 8-bit ADC. The 16-bit timer generates PWM for triac or MOSFET phase-angle control of AC loads, while the ADC reads thermistor inputs for temperature regulation. The 23 GPIO pins drive relays, switches, and seven-segment displays. Industrial -40C to +85C temperature rating covers kitchen and laundry environments, and STOP/WAIT low-power modes support sleep currents under 5 uA.
추천
Automotive Body Electronics
The MC68HC908JK1CP fits interior lighting, key-fob receivers, and simple sensor nodes because its HC08 core delivers deterministic interrupt response and the 8-bit ADC reads thermistor or potentiometer inputs with adequate resolution. The 20-pin PDIP package suits through-hole production boards used in automotive aftermarket modules. For OEM automotive designs with -40C to +125C requirements, the JK3E variant offers extended temperature. STOP mode current under 5 uA supports battery-connected nodes that must idle for months without replacement.
추천
Toy and Hobby Electronics
The MC68HC908JK1CP is ideal for hobby robotics kits, RC toy controllers, and educational STEM platforms because its 20-pin PDIP is breadboard-compatible and the HC08 core runs the legacy 68HC05 assembly language familiar to veteran embedded designers. The 16-bit timer/PWM channel drives servos and DC motor H-bridges, while the 15-channel 8-bit ADC reads analog sensors such as IR distance sensors, photocells, and potentiometers. The 1.5 KB FLASH supports modest behavior scripts, and the in-system programming enables field updates via simple serial bootloader.
추천
Security Keypads and Access Control
The MC68HC908JK1CP drives 3x4 or 4x4 matrix keypads and RFID reader interfaces because its 23 GPIO lines handle the matrix scanning with a low-pin-count package and the 1.5 KB FLASH stores user PIN tables, audit logs, and access codes. The HC08 core's bit-manipulation instruction set debounces keypad inputs in software without external components. The 8-bit ADC monitors battery voltage for low-battery alerts, and STOP mode current under 5 uA preserves backup battery life during AC mains outages.
추천
LED Lighting and Display Controllers
The MC68HC908JK1CP controls LED drivers, simple dot-matrix displays, and seven-segment indicators because its 16-bit timer/PWM channel drives LED brightness via PWM dimming at frequencies above 100 Hz (above human flicker perception). The 8-bit ADC reads ambient light sensors for automatic brightness adjustment, and the 23 GPIO lines multiplex 7-segment displays or WS2811-style LED chains. Industrial temperature grade supports indoor commercial lighting installations where operating temperature may approach 70C in enclosed fixtures.
추천
Battery Chargers and Power Management
The MC68HC908JK1CP implements simple CC/CV battery chargers for NiMH, Li-ion (single cell with external protection), and SLA batteries because its 15-channel 8-bit ADC monitors battery voltage, current, and temperature with adequate resolution for charger state machines. The HC08 core runs charge algorithms (dV/dt, -dV, timer-based) within 1.5 KB of FLASH, and STOP mode current under 5 uA preserves batteries during shelf storage. The 16-bit timer generates PWM for buck converter switching or linear regulator control.
추천
추천 제품 요약
엔지니어링 참조 데이터: MC68HC908JK1CP — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MC68HC908JK3CP | MC68HC908JK3ECP | MC68HC908JL3CP | MC68HC908JK1CDW | MC68HC908JK1PE |
|---|---|---|---|---|---|---|
| Package | 20-pin PDIP | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin SOIC - differs | 20-pin PDIP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Architecture | M68HC08 8-bit | M68HC08 8-bit | M68HC08 8-bit | M68HC08 8-bit | M68HC08 8-bit | M68HC08 8-bit |
| Program Memory (FLASH) | 1.5 KB | 4 KB | 4 KB | 4 KB | 1.5 KB | 1.5 KB |
| Internal Bus Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| GPIO Count | 23 | 23 | 23 | 24 | 23 | 23 |
| Temperature Grade | Industrial | Industrial | Extended (automotive) | Industrial | Industrial | Industrial |
주요 차별점
- Higher program memory capacity than JK1 base part (vs MC68HC908JK1CDW)
- Extended temperature grade for automotive environments (vs MC68HC908JK3CP)
- Drop-in compatible within M68HC08 family (vs MC68HC908JL3CP)
설계 노트
Decouple the VDD/VSS pair with a 100 nF ceramic capacitor placed within 5 mm of the IC pins. Add a bulk 10 uF tantalum or aluminum electrolytic capacitor on the supply rail near the MCU to suppress transient currents drawn by the internal ADC and oscillator. The HC08's internal voltage regulator requires a stable supply; if the input rail is shared with motors or relays, add an LC pi-filter (10 uH + 100 nF) to prevent digital switching noise from coupling into the analog references.
Keep analog ADC traces short and route them away from the crystal oscillator traces and PWM switching signals. Use a continuous ground pour on the bottom layer for the analog section and stitch the pour with vias around the ADC pin cluster. The crystal load capacitors (typically 15-33 pF) must be placed close to OSC1/OSC2 with traces no longer than 5 mm to avoid stray capacitance that detunes the oscillator.
Do not exceed the maximum voltage on any I/O pin above VDD + 0.3 V or below VSS - 0.3 V; doing so will forward-bias the ESD clamp diodes and may latch-up the part. Always configure unused I/O as outputs driven low (not high-impedance) to minimize STOP-mode current consumption. The IRQ pin is level-sensitive by default; configure the IRQ edge-select bit if a rising-edge trigger is needed to avoid spurious interrupts at power-up.
Estimated: at VDD = 5 V, 8 MHz bus, and all GPIO toggling at 1 MHz, the MC68HC908JK1CP typically draws 15-25 mA of active current, dissipating 75-125 mW of power in the 20-pin PDIP. The PDIP package's theta_JA of approximately 80 C/W yields a junction temperature rise of 6-10 C above ambient, well within the industrial -40C to +85C operating range. No external heatsink is required for any normal use case.
규정 준수 정보
Compliance status not explicitly stated in the Verified Web Data for the MC68HC908JK1CP. As a legacy NXP/Motorola part in PDIP package, RoHS compliance is not guaranteed; consult NXP's product compliance documentation for definitive status. AEC-Q100 qualification is not applicable for the JK1CP variant; choose the JK3ECP for automotive-grade operation.
