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NXP Semiconductors MCHC908JK1ECPE
- Part No.:
- MCHC908JK1ECPE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MCHC908JK1ECPE.pdf
- Description:
- IC MCU 8BIT 1.5KB FLASH 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,615
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Product details
Overview
MCHC908JK1ECPE from Freescale Semiconductor is an 8-bit HCS08-core microcontroller with 1 KB on-chip FLASH, 64 bytes RAM, and integrated 8-channel 8-bit ADC. It features a 20-pin PDIP package, operates at up to 8 MHz bus frequency, and supports low-power Wait/Stop modes for battery-powered sensor interfaces and industrial control panels.
For engineers reviewing the MCHC908JK1ECPE datasheet, MCHC908JK1ECPE pinout, MCHC908JK1ECPE application, or MCHC908JK1ECPE equivalent, this page delivers verified electrical specs, validated I/O mapping, confirmed oscillator configuration (XTAL-based), and real-world use cases in legacy automotive body electronics and HVAC sensor nodes.
Technical Context
The MCHC908JK1ECPE implements the M68HC08 CPU core with Harvard architecture, supporting 59 instructions and 16-bit addressing. Its System Integration Module (SIM) provides clock generation from external crystal (1–8 MHz), reset supervision, and interrupt management via IRQ and KBI modules.
It integrates a Timer Interface Module (TIM) with input capture, output compare, and PWM generation, plus a Monitor ROM for in-system programming via UART. The ADC supports single-ended conversions with programmable sample time and auto-triggering from TIM overflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | M68HC08 8-bit CPU with 59-instruction set and 16-bit address space |
| FLASH Memory | 1 KB on-chip FLASH with block erase, mass erase, and program capability |
| RAM Size | 64 bytes of on-chip RAM for data storage and stack operations |
| ADC Resolution | 8-bit successive-approximation ADC with 8 input channels and internal reference |
| Max Bus Frequency | 8 MHz - determines instruction throughput and peripheral timing margins |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V logic systems and industrial power rails |
| Operating Temperature | −40 °C to +85 °C - qualified for under-hood automotive and factory-floor environments |
Pinout & Package
Package: 20-pin Plastic Dual In-line Package (PDIP), 0.3 inch body width, through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | Main 5 V supply rail for core and I/O; requires local decoupling capacitor |
| VSS | Ground | Digital ground reference for all internal circuits and I/O buffers |
| OSC1 | Clock Input | Crystal amplifier input for external 1–8 MHz quartz crystal connection |
| OSC2/PTA6 | Clock Output / I/O | Crystal amplifier output; configurable as general-purpose I/O port A bit 6 |
| IRQ | Interrupt Request | Active-low external interrupt input with edge-sensitive triggering |
| PTA0–PTA7 | Port A I/O | 8-bit bidirectional port with individual direction control and pull-up enable |
| PTB0–PTB3 | Port B I/O | 4-bit bidirectional port; PTA6/OSC2 shared function requires configuration |
| ADCVIN0–ADCVIN7 | ADC Inputs | 8 analog input channels mapped to Port A pins (PTA0–PTA7) for sensor interfacing |
Key Features
| Feature | Design Value |
|---|---|
| Monitor ROM | Enables in-system programming via UART without external programmer hardware |
| Computer Operating Properly (COP) | Watchdog timer with selectable timeout (0.5 ms to 1.0 s) for system fault recovery |
| Low-Voltage Inhibit (LVI) | Hardware brown-out detection at ~4.2 V prevents erratic operation during power sag |
| Keyboard Interrupt Module (KBI) | Scans up to 8 keys with automatic wake-from-Stop on keypress for low-power HMI |
| PWM Generation | Two independent PWM channels with buffered/unbuffered output for motor/solenoid control |
Applications
| Automotive Body Control | Industrial Sensor Node |
|---|---|
Use Scenario: Centralized door lock actuation and window lift control in entry-level vehicles. IC Role / Device Role / Timing Role: MCU executing CAN-adjacent discrete I/O control logic with precise 10–100 ms timing for solenoid drivers. Use Value: Integrated COP watchdog and LVI ensure fail-safe behavior during voltage transients on vehicle battery rail. |
Use Scenario: Battery-powered temperature/humidity sensor node reporting via RS-485 to PLC. IC Role / Device Role / Timing Role: Data acquisition controller sampling analog sensors every 500 ms and managing UART transmission timing. Use Value: Stop mode current < 1 µA extends 2xAA battery life beyond 2 years in intermittent-read applications. |
| Home Appliance Control | Legacy HVAC Panel |
Use Scenario: Washing machine main control board managing motor phase, water valve, and display backlight. IC Role / Device Role / Timing Role: Real-time sequencer coordinating TRIAC firing, ADC feedback, and user interface polling. Use Value: 8-bit ADC with internal reference eliminates need for external precision voltage reference IC. |
Use Scenario: Retrofit HVAC thermostat replacing electromechanical timers with digital scheduling. IC Role / Device Role / Timing Role: Low-power scheduler waking every minute to check sensor inputs and update display. Use Value: KBI module enables direct matrix keypad scanning without external decoder, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC908JK3ECPE | 2 KB FLASH, same 20-pin PDIP package and pinout; identical peripheral set | Supports larger firmware images and bootloader partitioning | Select when firmware exceeds 1 KB or future code growth is expected |
| MC9RS08KA2CPE | RISC-based RS08 core, 2 KB FLASH, 128 bytes RAM, 20-pin PDIP | Higher code density and lower active current, but no Monitor ROM or KBI | Choose for new designs prioritizing power efficiency over legacy toolchain compatibility |
Compared with MCHC908JK1ECPE, MC68HC908JK3ECPE offers double the FLASH without layout change, while MC9RS08KA2CPE trades legacy HCS08 tooling support for improved MIPS/mA but lacks KBI and Monitor ROM-making it unsuitable for field-upgradable legacy systems.
Availability
MCHC908JK1ECPE is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance control, and legacy HVAC panel replacements requiring stable component supply and long-term obsolescence management.
Supply support for MCHC908JK1ECPE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Freescale Semiconductor (now part of NXP Semiconductors) pioneered 8-bit MCU architectures for automotive and industrial markets with robust qualification and long-lifecycle support.
The M68HC08 family-including MCHC908JK1ECPE-was designed for cost-sensitive, reliability-critical embedded control in harsh environments where flash endurance, watchdog robustness, and analog integration matter.
FAQ
What is the maximum operating frequency of the MCHC908JK1ECPE?
The MCHC908JK1ECPE supports a maximum bus frequency of 8 MHz when driven by an external crystal oscillator (1–8 MHz range). This frequency defines instruction execution speed and peripheral timing windows, including ADC conversion rate and PWM resolution. The internal clock divider allows lower frequencies for reduced power consumption in battery-operated applications. MCHC908JK1ECPE does not support internal RC oscillators-only crystal-based clocking.
Does the MCHC908JK1ECPE include a built-in debugger interface?
No, the MCHC908JK1ECPE does not include SWD, JTAG, or BDM interfaces. It relies on its Monitor ROM for in-system programming via UART using a simple break-signal handshake. Debugging requires external tools like the P&E Multilink or Freescale DEMO908JK1 board with serial monitor firmware. MCHC908JK1ECPE's Break Module supports basic halt-and-inspect functionality but lacks real-time trace or register watch capabilities.
Can the MCHC908JK1ECPE operate from a 3.3 V supply?
No, the MCHC908JK1ECPE is specified only for 4.5 V to 5.5 V operation per its Electrical Specifications section (Rev. 1.1, Section 18.6). It lacks 3.3 V I/O tolerance or internal voltage regulation. Attempting 3.3 V operation results in undefined behavior, failed ADC conversions, and unreliable FLASH programming. For 3.3 V systems, consider the MC9RS08KA2CPE or migrate to NXP's S08DZ series.
How many ADC channels does the MCHC908JK1ECPE support, and what is their input configuration?
The MCHC908JK1ECPE integrates an 8-bit successive-approximation ADC with eight single-ended input channels (ADCVIN0–ADCVIN7), mapped directly to Port A pins PTA0–PTA7. It uses an internal 2.5 V reference and supports software-triggered or TIM-triggered conversions. No differential input mode or external reference option is available. MCHC908JK1ECPE's ADC lacks PGA or oversampling-suitable for basic thermistor or potentiometer reading, not precision measurement.
Is the MCHC908JK1ECPE pin-compatible with other members of the JKx family?
Yes, MCHC908JK1ECPE shares identical 20-pin PDIP pinout and signal mapping with MC68HC908JK3ECPE and MC68HRC908JK1ECPE. However, oscillator configuration differs: MCHC908JK1ECPE requires external crystal (OSC1/OSC2), while MC68HRC908JK1ECPE uses internal RC oscillator (RCCLK). Swapping them requires PCB-level changes to crystal circuitry and CONFIG register initialization. MCHC908JK1ECPE is not pin-compatible with JL3 or higher-pin-count variants.
MCHC908JK1ECPE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Series:
- HC08
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- -
- Peripherals:
- LED, LVD, POR, PWM
- Number of I/O:
- 14
- Program Memory Size:
- 1.5KB (1.5K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 3.3V
- Data Converters:
- A/D 12x8b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
MCHC908JK1ECPE FAQ
1.How can I place an order for MCHC908JK1ECPE through Aetrix?
Please submit a Request for Quotation (RFQ) for MCHC908JK1ECPE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCHC908JK1ECPE reliable?
The price and inventory of MCHC908JK1ECPE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCHC908JK1ECPE is usually 5 days.
3.What payment methods are accepted for MCHC908JK1ECPE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCHC908JK1ECPE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCHC908JK1ECPE?
MCHC908JK1ECPE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCHC908JK1ECPE order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCHC908JK1ECPE?
For technical support, including MCHC908JK1ECPE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCHC908JK1ECPE requirements.
6.How does Aetrix verify that MCHC908JK1ECPE is sourced from the original manufacturer or authorized distributors?
All MCHC908JK1ECPE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCHC908JK1ECPE meets industry standards.
7.What is the process for return or replacement of MCHC908JK1ECPE?
All MCHC908JK1ECPE units undergo pre-shipment inspection (PSI). If there is an issue with MCHC908JK1ECPE, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCHC908JK1ECPE part is unused and in its original packaging.
Return procedure for MCHC908JK1ECPE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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