MCHC908QY4MDWER - 8-Bit 8MHz 4KB Flash MCU | NXP
MPN: MCHC908QY4MDWER ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.9 | $3.90 |
| 10 | $3.9 | $39.00 |
| 100 | $3.9 | $390.00 |
| 500 | $3.9 | $1,950.00 |
| 1,000 | $3.9 | $3,900.00 |
MCHC908QY4MDWER Overview
A microcontroller is a programmable integrated circuit that combines a CPU core, memory, I/O, and peripherals on one die. This MCHC908QY4MDWER belongs to the M68HC08/HC08 family of 8-bit devices, using a CISC architecture with a Von Neumann memory organization. Its compact memory and peripheral set make it suitable for embedded control, sensing, and simple actuator-control systems where a larger MCU or external components would add unnecessary cost or board area.
The verified device data identifies an 8-bit core operating at 8 MHz, 4 KB of Flash program memory organized as 4K x 8, and 128 x 8 RAM. The listed peripherals include an ADC, PWM, LVD, and POR, while the device has 13 I/O pins. These features support basic analog measurement, timed output generation, and embedded control functions in a compact 16-SOIC outline.
The MCHC908QY4MDWER is housed in a 16-SOIC surface-mount package, approximately 7.50 mm wide according to the Rochester Electronics listing. The HC08Q family positioning in the available datasheet result identifies the part as a low-cost, high-performance 8-bit MCU family member. Its programming model and peripheral integration can reduce external component count in small control boards.
Typical uses include low-cost industrial control modules, simple sensor interfaces, keypad or panel controllers, small motor or valve control, and embedded products requiring a compact 8-bit controller. For battery or handheld equipment, the low pin count and integrated ADC can simplify the design, although the exact power-management behavior must be checked in the manufacturer datasheet.
Before upgrading a legacy HC08 design, verify the exact pinout, voltage limits, clock configuration, ADC characteristics, memory programming method, and timing behavior. The available distributor result explicitly reports the part status as not for new designs, so it should be treated as a legacy or NRND procurement choice rather than a new-design default. This page synthesizes verified distributor data, package information, and application guidance while leaving unavailable technical parameters unfilled.
This product data consolidates MPN identification, verified distributor descriptions, package information, embedded-control use cases, and replacement-selection cautions. It is intended to support engineering comparison and sourcing decisions, not to replace the complete manufacturer datasheet or a device-specific qualification review.
Drop-in alternatives for MCHC908QY4MDWER — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MCHC908QY4MDWER (same form factor and footprint) — differing in Package, ADC, Core, Architecture, Family.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC908QY4ACDWE
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View Datasheet →MCHC908QT4CDWE
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View Datasheet →MC908QT4ACDWE
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View Datasheet →MCHC908QY4MDWER Maximum Ratings & Electrical Characteristics
| Manufacturer | NXP Semiconductors |
| Core Processor | HC08 8-bit core |
| Maximum Clock Frequency | 8 MHz |
| Program Memory Size | 4 KB (4K x 8) Flash |
| RAM Size | 128 x 8 bits |
| ADC | Integrated ADC |
| PWM | Integrated PWM peripheral |
| Low-Voltage Detection | LVD peripheral |
| Power-On Reset | POR peripheral |
| Number of I/O Pins | 13 |
| Architecture | CISC with Von Neumann architecture |
| Family | HC08Q / M68HC08 |
| Package | 16-SOIC |
| Package Width | 7.50 mm |
| Part Status | Not For New Designs |
MCHC908QY4MDWER Pin Configuration
| Pin 1 | [DATA_NEEDED: pin 1 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 2 | [DATA_NEEDED: pin 2 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 3 | [DATA_NEEDED: pin 3 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 4 | [DATA_NEEDED: pin 4 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 5 | [DATA_NEEDED: pin 5 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 6 | [DATA_NEEDED: pin 6 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 7 | [DATA_NEEDED: pin 7 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 8 | [DATA_NEEDED: pin 8 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 9 | [DATA_NEEDED: pin 9 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 10 | [DATA_NEEDED: pin 10 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 11 | [DATA_NEEDED: pin 11 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 12 | [DATA_NEEDED: pin 12 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 13 | [DATA_NEEDED: pin 13 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 14 | [DATA_NEEDED: pin 14 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 15 | [DATA_NEEDED: pin 15 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
| Pin 16 | [DATA_NEEDED: pin 16 name] — Not provided in the verified data; confirm against the manufacturer datasheet. |
Typical Applications
MCHC908QY4MDWER is suitable for 6 applications: Small Industrial Control Module, Sensor Interface Controller, Keypad and Panel Controller, Simple Motor or Valve Control, Battery-Powered Measurement Device, Legacy HC08 Product Maintenance.
Small Industrial Control Module
MCHC908QY4MDWER fits a small embedded controller that must combine logic, analog measurement, and timed output in a compact 16-SOIC footprint. Its verified 8 MHz HC08 core provides processing for basic sequencing, while the ADC can read sensors and the PWM peripheral can command actuator or indicator drivers. The 13 I/O pins are sufficient for a restrained control board, although exact pin multiplexing and electrical limits must be checked in the datasheet. Because the part is listed as not for new designs, it is most appropriate for maintaining an existing HC08 platform rather than starting a new safety-critical industrial design.
Recommended
Sensor Interface Controller
The integrated ADC and 13 available I/O pins make MCHC908QY4MDWER a candidate for compact sensor-interface boards. A firmware routine can acquire analog measurements, apply filtering or thresholds, and report states through digital outputs. The 4 KB Flash limit favors small, focused control code, while 128 x 8 RAM supports a limited working set and stack. Verify ADC resolution, input range, sampling behavior, and pin assignments in the authoritative datasheet because those values are not included in the supplied verified data.
Recommended
Keypad and Panel Controller
MCHC908QY4MDWER can serve as the controller for a small keypad, menu panel, or status-display interface when the application needs local logic without a larger MCU. The 8 MHz core can scan inputs, debounce contacts, update indicators, and manage simple user commands, while PWM may support display or buzzer functions if its configuration matches the board design. Its 16-SOIC package is easy to route on a through-hole-compatible or mixed-technology PCB. Pin multiplexing, timing, and electrical requirements should be verified before using the legacy part in a new product.
Recommended
Simple Motor or Valve Control
The HC08 core, PWM peripheral, and 13 I/O pins make MCHC908QY4MDWER suitable for a basic actuator-control stage such as a small valve, relay, or low-power motor driver. PWM can generate a controlled command signal, while GPIO outputs can sequence enables or fault signals. The device does not replace a dedicated high-current power stage or a qualified motor-driver IC. Confirm timer output mapping, maximum I/O electrical ratings, supply voltage, startup behavior, and thermal conditions in the manufacturer documentation before connecting an actuator.
Recommended
Battery-Powered Measurement Device
MCHC908QY4MDWER can be evaluated for a compact battery-powered measurement product where the 8-bit core handles local acquisition and control, and where the ADC reduces the need for a separate analog front end. Its small package and limited memory make it appropriate for a narrowly defined instrument rather than a general data logger. The supplied data does not state standby current, active current, operating voltage, or ADC specifications, so battery-life analysis cannot be completed from the available information. Confirm those electrical parameters and any low-voltage reset behavior before design approval.
Recommended
Legacy HC08 Product Maintenance
MCHC908QY4MDWER is primarily relevant to repair, continuation, and lifecycle-management of an existing HC08 design. Preserving the MCU can avoid redesigning a qualified board with its sensor wiring, power distribution, and firmware assumptions. A maintenance engineer should first confirm the package pinout, clock source, programming connector, memory map, and required peripherals, then compare those details with the replacement candidate. The available verified listing marks the target as not for new designs, so sourcing should include counterfeit-risk controls, traceability, and careful electrical testing.
Recommended
Recommended Products Summary
Engineering reference data for MCHC908QY4MDWER — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC908QY4ACDWE | MCHC908QT4CDWE | MC908QT4ACDWE |
|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Brand | NXP Semiconductors | Freescale Semiconductor | NXP Semiconductors | Freescale Semiconductor |
Key Differentiators
- Compact integrated embedded-control resource set (vs MC908QY4ACDWE)
- Directly identified legacy sourcing position (vs MCHC908QT4CDWE)
- Integrated ADC and PWM for compact control (vs MC908QT4ACDWE)
- Procurement traceability through multiple distributor records (vs MC908QY4ACDWE)
Design Notes
Do not treat the 16-SOIC outline as proof of drop-in compatibility. Before replacing MCHC908QY4MDWER, compare every pin, power rail, ground connection, reset input, oscillator connection, ADC input, PWM output, and programming interface against the target datasheet. The supplied data confirms the package and major device resources but does not provide a complete pinout, voltage range, or timing table.
Place the MCU close to the sensor and actuator circuitry to keep analog and switching signals short. Provide local decoupling at the supply pins, route oscillator and reset traces away from noisy PWM or relay-control paths, and use a stable ground reference for ADC measurements. Exact capacitor values, pin locations, and layout limits must be taken from the manufacturer datasheet because they are not present in the verified data.
The MCU's power budget cannot be finalized from the supplied data because supply-voltage limits, active current, standby current, and ADC reference details are unavailable. Before production, calculate the average and worst-case current for the HC08 core, peripherals, sensors, and external drivers, then confirm the regulator's transient response and thermal margin. The legacy lifecycle status makes supply-voltage verification especially important for surplus inventory.
The 8 MHz core and integrated ADC do not by themselves define measurement accuracy. Define the sensor signal range, ADC reference, sampling rate, and required filtering in firmware or external circuitry, then test noise and linearity with the intended board layout. Avoid routing sensitive sensor inputs beside PWM outputs or switching-regulator nodes, and validate the completed design across temperature and supply conditions.
Compliance Information
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is marked not applicable only because no automotive qualification information was provided; this is not an automotive qualification claim.