MCHC908JK1ECPE - HC08 8-Bit MCU 1.5KB Flash 8MHz 20-DIP | NXP
MPN: MCHC908JK1ECPE ✗ Cuối đờiMCHC908JK1ECPE Tóm tắt
What is an 8-bit microcontroller? An 8-bit microcontroller is a small computer-on-a-chip built around an 8-bit data bus central processing unit (CPU). In the broader product taxonomy, the MCHC908JK1ECPE is a microcontroller (MCU) -> embedded microcontroller -> 8-bit MCU -> HC08-family MCU -> flash-based MCU. The HC08 family implements a CISC-style CPU08 instruction set and includes on-chip peripherals such as timers, ADC, and serial interfaces, targeting cost-sensitive industrial and consumer embedded designs.
Key features of the MCHC908JK1ECPE include 1.5 KB of in-application-programmable Flash memory, 128 bytes of RAM, an integrated ADC, multiple timers, and a keyboard interrupt module. The device supports 3.0 V to 5.5 V operation (typical 3.3 V / 5 V dual-supply designs), an internal bus frequency up to 8 MHz, and is offered in the 20-pin PDIP package that simplifies prototyping and breadboard integration for development and low-volume production.
Architecturally, the HC08 core is a CISC CPU with a 16-bit addressing space (64 KB), and the JK/JL variants are the lower-pin-count members of the family. The 1.5 KB Flash provides enough memory for typical small control loops, sensor conditioning routines, and user-interface glue logic. The on-chip ADC, timers, and keyboard interrupts reduce external component count and BOM cost.
Typical applications include low-cost white goods and small appliance controllers (washing machines, microwave ovens), automotive body electronics (window lifters, simple body controllers), industrial sensor signal conditioning and front-end processing, remote controls and user-interface panels, security-system keypads and PIR-sensor interfaces, and battery-powered smart sensors. The 20-pin PDIP form factor is favored for through-hole assembly and easy rework.
Design consideration: because the M68HC08 family is mature and approaching end-of-life on the original NXP roadmap, designers should evaluate modern migration options such as Freescale/NXP S08 low-end families, Microchip PIC16/PIC18 with similar peripherals, or ARM Cortex-M0+ MCUs (e.g., SAMD20, EFM32) when long-term supply is critical. For existing designs and legacy maintenance, however, the MCHC908JK1ECPE remains a well-documented and supported option.
This page synthesizes distributor pricing, available pin-compatible alternatives from the same 20-pin PDIP footprint, and practical design notes not typically found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho MCHC908JK1ECPE — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MCHC908JK1ECPE (cùng hình factor và footprint) — khác nhau ở Data Bus Width, Operating Temperature Range, Program Memory Size, Supply Voltage Range.
MCHC908JK3ECPE
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Xem tài liệu →MCHC908JL3ECPE
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MCHC908JK1CPE
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MCHC908JK1EMPE
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MCHC908JK1ECPE Tỷ lệ tối đa & tính chất điện
| Core | HC08 (CPU08) |
| Bề rộng đường dữ liệu | 8 bit |
| Program Memory Size | 1.5 KB Flash (1.5K x 8) |
| RAM Size | 128 bytes |
| Tần số xung maksimum | 8 MHz (internal bus) |
| Supply Voltage Range | 3.0 V to 5.5 V (3.3 V / 5 V) |
| ADC | Integrated multi-channel ADC |
| Number of I/O Pins | 15 (approx.) |
| Timers | Multiple 16-bit (TIM) channels |
| Hộp | 20-DIP (PDIP-20) through-hole |
| Package Code | DIP / PDIP |
| Kiểu lắp đặt | Through-Hole |
| Khoảng nhiệt độ hoạt động | -40C to +85C (industrial) |
| Instruction Set | CISC (HC08) |
Cấu hình chân MCHC908JK1ECPE
| Chân 1 | IRQ — External interrupt request input |
| Chân 2 | OSC1 — Crystal/oscillator input or external clock |
| Chân 3 | OSC2 — Crystal/oscillator output |
| Chân 4 | RST — Reset input (active low) |
| Chân 5 | VSS — Ground reference |
| Chân 6 | PTA0 — Port A bit 0 / ADC channel / TCH channel |
| Chân 7 | PTA1 — Port A bit 1 / ADC channel / TCH channel |
| Chân 8 | PTA2 — Port A bit 2 / ADC channel / TCH channel |
| Chân 9 | PTA3 — Port A bit 3 / ADC channel / TCH channel |
| Chân 10 | PTA4 — Port A bit 4 / ADC channel / TCH channel |
| Chân 11 | PTA5 — Port A bit 5 / ADC channel / TCH channel |
| Chân 12 | PTA6 — Port A bit 6 / ADC channel / TCH channel |
| Chân 13 | PTA7 — Port A bit 7 / ADC channel / TCH channel |
| Chân 14 | PTB0 — Port B bit 0 / KBIE0 |
| Chân 15 | PTB1 — Port B bit 1 / KBIE1 |
| Chân 16 | PTB2 — Port B bit 2 / KBIE2 |
| Chân 17 | PTB3 — Port B bit 3 / KBIE3 |
| Chân 18 | PTB4 — Port B bit 4 |
| Chân 19 | PTB5 — Port B bit 5 |
| Chân 20 | VDD — Positive supply voltage |
Ứng dụng tiêu biểu
MCHC908JK1ECPE phù hợp cho 6 Áp dụngs: White-Goods / Small Appliance Controllers, Automotive Body Electronics, Industrial Sensor Signal Conditioning, Remote Control / User-Interface Panels, Security System Keypads and PIR Sensors, Battery-Powered Smart Sensors.
White-Goods / Small Appliance Controllers
The MCHC908JK1ECPE fits well in cost-sensitive white-goods controllers such as microwave ovens, washing-machine user-interface panels, and dishwasher controls. Its 1.5 KB Flash is enough for relay sequencing, timer/counter algorithms, and a seven-segment or LED drive UI, while the 128 B RAM holds key debounce and mode state. The integrated ADC allows sensing of analog signals like water level probes, temperature sensors, or humidity sensors without an external analog-front-end. The 20-pin PDIP through-hole package survives high-temperature wave-solder reflow at appliance manufacturing lines, where SMD-only parts are sometimes avoided. The HC08 CISC ISA also enables short interrupt latency for safety-critical door-lock and over-temperature interlocks; the device provides up to 8 MHz bus frequency, sufficient for typical 1 ms control loops.
Được đề xuất
Automotive Body Electronics
In legacy automotive body applications such as window lifters, mirror actuators, or simple central-locking controllers, the MCHC908JK1ECPE serves as a low-cost HC08 slave controller. Its 8-bit core and 8 MHz bus can handle PWM generation for motor control, ADC sampling for current sensing, and CAN-less LIN-like UART communication via the integrated SCI. The 20-DIP through-hole package is rugged enough for vibration-heavy under-dash and door-module environments, where SMD joints are more failure-prone. The 128 B RAM is sufficient for short bursts of LIN/UART frame buffering, and 1.5 KB Flash allows integration of small diagnostic routines. For new designs, AEC-Q100-qualified variants are required - this specific part is industrial-grade; AEC-Q100 support must be verified separately against the NXP automotive-grade catalog.
Được đề xuất
Industrial Sensor Signal Conditioning
The MCHC908JK1ECPE is suited to compact industrial sensor-front-end boards where 8-bit processing and ADC front-ends are needed for transducer read-out. Its integrated multi-channel ADC digitizes analog signals from thermocouples, RTDs, strain gauges, or 4-20 mA current loops, while the 128 B RAM holds basic calibration coefficients. Engineers place the MCU between the analog front-end and an isolated serial link; the 8 MHz bus processes linearization routines and digital-filtering in real time. The 20-DIP through-hole package facilitates robust industrial backplanes and conformal-coated assemblies. Designers also benefit from the HC08 family toolchain, including CodeWarrior HC(S)08 IDE, simplifying firmware development for sensor-controller platforms.
Được đề xuất
Remote Control / User-Interface Panels
Handheld remote controls and small user-interface panels benefit from the MCHC908JK1ECPE's small Flash footprint, integrated keypad-interrupt module, and through-hole DIP package. The 1.5 KB Flash fits typical IR-protocol state machines (RC5, NEC, SIRC), and 128 B RAM buffers transmit frames and debounce state. The HC08 keyboard-interrupt capability allows low-power wake-on-key events without external interrupt controllers. The 20-DIP package suits prototyping and is also used in higher-reliability panels where through-hole retains robustness. The device typically operates from 3 V cells, where the wide 3.0 V to 5.5 V supply range simplifies single-supply implementation and reduces BOM cost in mass-market remote designs.
Được đề xuất
Security System Keypads and PIR Sensors
Security-system keypads and PIR sensor modules rely on the MCHC908JK1ECPE for simple event handling, debouncing, and decision logic. The 8-bit HC08 core is fully adequate for driving 4x4 matrix keypads with the integrated keyboard-wake module and on-chip timers - critical to minimize quiescent current in battery-backed installations. The integrated ADC digitizes PIR-sensor analog signals, and 128 B RAM is enough for alarm-state buffering. The 20-DIP package is preferred for retrofit through-hole installations on legacy alarm boards. Migration to SMD or modern Cortex-M0+ is recommended for new builds where ALF/RoHS compliance and long-term parts availability outweigh the BOM-savings argument.
Được đề xuất
Battery-Powered Smart Sensors
For battery-powered smart sensors in industrial IoT and metering, the MCHC908JK1ECPE offers a low-cost 8-bit MCU in a through-hole 20-DIP package, suitable for retrofit and industrial-housing assembly. With its 3.0 V to 5.5 V supply, the device can be powered directly from 3 V lithium cells or regulated rails; the integrated ADC reads sensor outputs (temperature, pressure, or flow) and the 1.5 KB Flash houses sensor-fusion and calibration routines. When teamed with an external low-power wireless transceiver (e.g., a sub-GHz or Bluetooth low-energy modem), the MCU becomes a sensor-node controller. For very low standby power, designers typically gate the radio supply via a load switch; HC08 STOP/WAIT modes keep idle draw in the microampere range, sufficient for multi-year battery life in metering scenarios.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MCHC908JK1ECPE — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MCHC908JK3ECPE | MCHC908JL3ECPE | MCHC908JK1CPE |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 20-DIP (PDIP-20) | 20-DIP (PDIP-20) - same | 20-DIP (PDIP-20) - same | 20-DIP (PDIP-20) - same |
| Program Memory (Flash) | 1.5 KB | 4 KB (+167%) | 4 KB (+167%) | 1.5 KB (same) |
| RAM Size | 128 bytes | 128 bytes (same) | 128 bytes (same) | 128 bytes (same) |
| Maximum Bus Clock | 8 MHz | 8 MHz (same) | 8 MHz (same) | 8 MHz (same) |
| Operating Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Commercial (0C to +70C) |
| Peripheral Focus | ADC + KBIE (keyboard interrupt) | ADC + KBIE | LCD driver + KBIE | ADC + KBIE (same die) |
| Lifecycle Status | Obsolete (No Longer Manufactured) | Obsolete / NRND | NRND | NRND |
Bảo phân biệt quan trọng
- Smallest 20-DIP HC08 footprint with 1.5 KB Flash (vsMCHC908JK3ECPE)
- Industrial temperature range (-40C to +85C) (vsMCHC908JK1CPE)
- Integrated ADC + KBIE on 20 pins (vsMCHC908JL3ECPE)
Ghi chú thiết kế
The MCHC908JK1ECPE operates over 3.0 V to 5.5 V. Place a 100 nF decoupling capacitor directly between VDD (pin 20) and VSS (pin 5) plus a 10 uF bulk capacitor on the board. For battery-powered designs, leverage HC08 STOP/WAIT low-power modes to achieve microamp-level standby. Estimated: at VDD = 3.3 V and 8 MHz internal bus, active current is on the order of a few milliamps; STOP current is sub-milliampere per the family datasheet; verify on the final PCB before locking the battery budget.
Keep oscillator traces (OSC1/OSC2) short and guard both with a ground ring to minimize jitter. Route analog ADC inputs away from switching traces to avoid crosstalk into the integrated ADC - if applying an external resistor divider for sensor conditioning, place the divider close to the ADC pin and add a small RC filter to suppress transient pickup. Typical JTAG/background-debug pins should also be guarded if unused, to avoid inadvertent resets during EMI events.
Do not assume supply-side tolerance beyond 5.5 V even with the wide input range; overshoot during hot-plug can latch the MCU. The 20-DIP PDIP package is not reflow-solder compatible (intended for wave-solder and through-hole assembly) - surface-mount migration requires switching to a TSSOP/SOIC variant. When migrating HC08 firmware to a new MCU family, audit the CISC instruction timing; cycle-accurate routines may need rebalancing on RISC targets. Always check the latest NXP product-change notifications before committing new production builds.
Thông tin tuân thủ
MCHC908JK1ECPE is marked No Longer Manufactured by NXP. RoHS/REACH compliance status was not present in the verified web data; consult NXP product-change notifications for definitive compliance before qualified production runs. AEC-Q100 qualification status not applicable to this industrial-grade part.
