MC908QY4AMDTE - 8-bit 8MHz HC08 4KB Flash MCU 16-TSSOP | NXP
MPN: MC908QY4AMDTE ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.65 | $2,325.00 |
| 1,000 | $4.1 | $4,100.00 |
MC908QY4AMDTE Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and a configurable set of peripherals (timers, ADC, communication ports) into one device. Microcontrollers sit at the bottom of the embedded hierarchy: MCU -> microcontroller -> embedded controller -> semiconductor IC. The MC908QY4 series targets low-cost, pin-constrained applications where analog integration and Flash-based code storage matter more than raw compute, contrasting with 32-bit Cortex-M parts when deterministic 8-bit simplicity is acceptable.
Key features include on-chip FLASH program memory with security, 128 bytes of RAM (typical), 13 GPIO pins, an 8-channel 10-bit ADC, a 16-bit timer with two compare registers, an SCI (Serial Communications Interface) for UART communication, and a built-in oscillator with optional trimmable internal clock source. The integrated ADC with 8 input channels eliminates external signal conditioning in many sensor-interface designs, and the 16-bit timer provides accurate pulse-width modulation (PWM) generation for motor-speed control and lighting drivers.
The CPU08 core uses a CISC (Complex Instruction Set Computer) architecture supporting a rich set of addressing modes and bit manipulation instructions that are well-suited to legacy 8-bit code migration. The integrated FLASH supports in-system programming via the MON08 or background debug mode (BDM) for in-circuit firmware update. The HC08Q family shares common peripherals across the family, simplifying code reuse between derivatives with larger memory footprints.
Typical applications include white-goods control (washing machines, dishwashers, microwave ovens), automotive body controllers (mirror adjusters, simple lighting control, fan drivers), industrial timer/counter modules, remote-control transmitters, and low-end sensor signal conditioning. The wide operating temperature range (-40C to +125C) supports automotive underhood and outdoor industrial environments.
When designing with this device, ensure the BDM interface is brought out to a header or test point for in-circuit firmware update. Use the internal oscillator option to reduce BOM cost in cost-sensitive designs, but switch to an external crystal only when serial-communication baud-rate accuracy demands it. Verify the latest NXP product-change notifications before locking the bill of materials, as the family is in end-of-life transition.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives from the HC08 family, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for MC908QY4AMDTE — 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 MC908QY4AMDTE (same form factor and footprint) — differing in Package, Supply Voltage, Number of I/O, Operating Temperature, Program Memory Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC908QB8CDTE
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →MC908QY4ACDWE
✅ Drop-In✓ In Stock
$4.3345 / Unit
View Datasheet →MC68HC908QY4MDTE
✅ Drop-In✓ In Stock
$5.72 / Unit
View Datasheet →MC908QC16CDXE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908QY4AMDTE Maximum Ratings & Electrical Characteristics
| Manufacturer | NXP Semiconductors (formerly Freescale Semiconductor) |
| Series | HC08 MC908QY4 |
| Core Processor | HC08 (CPU08, CISC, Von Neumann) |
| Core Size | 8-bit |
| Speed | 8 MHz |
| Program Memory Size | 4 KB (4K x 8) |
| Program Memory Type | FLASH |
| Number of I/O | 13 GPIO |
| Supply Voltage | 2.7V to 5.5V (typical 5V) |
| Operating Temperature | -40C to +125C |
| Package | 16-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| ADC | 8-channel 10-bit |
| Connectivity | SCI (UART) |
| Timers | 16-bit, 2 channels |
| Lifecycle | End of Life / Last Time Buy |
MC908QY4AMDTE Pin Configuration
| Pin 1 | IRQ — External interrupt request input (active low) |
| Pin 2 | VDD — Power supply (2.7V to 5.5V) |
| Pin 3 | VSS — Ground |
| Pin 4 | PTA0/TCLK/ADC0 — GPIO port A bit 0 / Timer clock input / ADC channel 0 |
| Pin 5 | PTA1/ADC1 — GPIO port A bit 1 / ADC channel 1 |
| Pin 6 | PTA2/ADC2 — GPIO port A bit 2 / ADC channel 2 |
| Pin 7 | PTA3/ADC3 — GPIO port A bit 3 / ADC channel 3 |
| Pin 8 | PTA4/ADC4 — GPIO port A bit 4 / ADC channel 4 |
| Pin 9 | PTA5/ADC5 — GPIO port A bit 5 / ADC channel 5 |
| Pin 10 | PTA6/ADC6 — GPIO port A bit 6 / ADC channel 6 |
| Pin 11 | PTA7/ADC7 — GPIO port A bit 7 / ADC channel 7 |
| Pin 12 | PTB0/TxD — GPIO port B bit 0 / SCI transmit data |
| Pin 13 | PTB1/RxD — GPIO port B bit 1 / SCI receive data |
| Pin 14 | PTB2 — GPIO port B bit 2 |
| Pin 15 | PTB3 — GPIO port B bit 3 |
| Pin 16 | OSC1 — Crystal oscillator input |
Typical Applications
MC908QY4AMDTE is suitable for 7 applications: White Goods Control (Washing Machines, Dishwashers), Automotive Body Electronics (Mirror Adjusters, Fan Drivers), Industrial Timer and Counter Modules, Remote Control Transmitters (RF/IR), Low-End Sensor Signal Conditioning Hubs, Cost-Sensitive Lighting Controllers (LED Drivers, Strobe), Consumer Electronics User Interface Panels.
White Goods Control (Washing Machines, Dishwashers)
The MC908QY4AMDTE's 8 MHz HC08 core, 4 KB on-chip FLASH, and 13 GPIO pins are well-matched to the deterministic control loops in washing-machine motor controllers and dishwasher user-interface panels. Its integrated 16-bit timer with two compare channels generates PWM for driving triac-controlled AC loads directly from the MCU, eliminating external timer ICs and reducing BOM cost. The 8-channel 10-bit ADC reads water-level sensors, thermistor inputs, and door-switch status with sufficient resolution for cost-sensitive appliance front panels. Unlike 32-bit Cortex-M0 alternatives that require higher BOM cost and pin count, the MC908QY4AMDTE's 16-TSSOP footprint fits 4-layer appliance-control PCBs with strict height constraints.
Recommended
Automotive Body Electronics (Mirror Adjusters, Fan Drivers)
Automotive body-control modules use the MC908QY4AMDTE's -40C to +125C operating range and 5V supply tolerance to drive mirror-position motors and small DC fans directly. The 16-bit timer produces accurate 50Hz-100Hz PWM for motor-speed control, while the ADC reads mirror-position feedback potentiometers. Note this part is industrial-temperature, NOT AEC-Q100 qualified; for production automotive designs, NXP recommends migrating to S9S08AW16 or MC9S08AW32 qualified parts. The legacy HC08 codebase suits existing automotive Tier-1 suppliers maintaining installed firmware bases.
Recommended
Industrial Timer and Counter Modules
The MC908QY4AMDTE's 16-bit timer with two compare registers provides industrial timing accuracy (sub-microsecond resolution at 8 MHz bus) needed for relay sequencing in factory-floor counters. The 8-channel ADC monitors 4-20mA sensor current loops with external resistor shunts, while the SCI/UART interfaces with host PLCs using Modbus-RTU protocols. The 4 KB FLASH stores up to 3,500 bytes of ladder-logic-equivalent C code, sufficient for relay-control applications. Compared to PLC SCADA modules using larger MCUs, the 16-TSSOP footprint allows SMD-mount DIN-rail enclosed modules with compact dimensions.
Recommended
Remote Control Transmitters (RF/IR)
Battery-powered remote controls benefit from the MC908QY4AMDTE's low 5V supply current, allowing coin-cell or two-AAA battery operation across a year of standby. The HC08 CPU08 handles button-debounce and IR-encoding protocols like RC-5 and Sony SIRC through its built-in timer. The 4 KB FLASH stores lookup tables for multi-device universal remotes supporting TV, AV-receiver, and streaming devices. When migrating to other MCUs, S9S08SG4E2CTJ offers modern low-power modes reducing standby current by 5-10x for longer battery life.
Recommended
Low-End Sensor Signal Conditioning Hubs
Sensor hubs aggregating temperature, humidity, and gas-sensor analog inputs use the MC908QY4AMDTE's 8-channel 10-bit ADC as the central conversion resource, with the HC08's CISC bit-manipulation instructions simplifying mask-and-shift sensor-data handling. The SCI/UART forwards calibrated sensor data to upstream controllers or LCD displays. The 13 GPIO pins multiplex as SPI/I2C bit-banged master lines for cost-sensitive sensor networks. This part is preferred over 32-bit alternatives where cost targets under $0.50 per sensor node are required.
Recommended
Cost-Sensitive Lighting Controllers (LED Drivers, Strobe)
LED architectural-lighting controllers use the MC908QY4AMDTE's 16-bit timer PWM to drive 4-8 LED channels with 8-bit brightness resolution at 1 kHz refresh rates without external PWM-driver ICs. The 5V supply interfaces directly with logic-level MOSFET gate drivers, while the 13 GPIO pins provide manual-mode override capability for installers and dimming controls. The wide temperature rating supports outdoor LED-strip controllers and landscape-lighting applications. The 16-TSSOP 4.40mm body suits slim in-line strip-controller enclosures with no clearance concerns for the small package.
Recommended
Consumer Electronics User Interface Panels
Microwave ovens, coffee machines, and small kitchen appliances use the MC908QY4AMDTE to drive 7-segment LCDs or LED matrix displays with button-debounce matrices up to 4x4 keys. The SCI/UART interfaces with main control boards, while the ADC reads temperature sensors and humidity detectors. The HC08's CISC architecture simplifies state-machine-style firmware for cooking profile timing and beeper control. Compact 16-TSSOP footprint fits consumer-appliance front-panel boards where every square millimeter counts.
Recommended
Recommended Products Summary
Engineering reference data for MC908QY4AMDTE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC908QB8CDTE | MC908QY4ACDWE | MC68HC908QY4MDTE | MC908QC16CDXE |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors (Freescale era) | NXP Semiconductors |
| Package | 16-TSSOP | 16-TSSOP - same | 16-SOIC - same pin count different body | 16-TSSOP - same | 16-TSSOP - same |
| FLASH Memory | 4 KB | 8 KB | 4 KB | 4 KB | 16 KB |
| CPU Core | HC08 (CPU08) 8-bit | HC08 (CPU08) 8-bit | HC08 (CPU08) 8-bit | HC08 (CPU08) 8-bit | HC08 (CPU08) 8-bit |
| Operating Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| GPIO Count | 13 | 13 | 13 | 13 | 13 |
| ADC | 8-channel 10-bit | 8-channel 10-bit | 8-channel 10-bit | 8-channel 10-bit | 8-channel 10-bit |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V |
| Lifecycle Status | Last Time Buy (EOL) | Last Time Buy (EOL) | Last Time Buy (EOL) | EOL | Last Time Buy (EOL) |
Key Differentiators
- Doubles FLASH program memory in same HC08Q family (vs MC908QB8CDTE)
- AEC-Q100 automotive-grade migration available (vs MC9S08AW32MFGE)
- Lower-power S08 successor with active supply (vs S9S08SG4E2CTJ)
- Pin-compatible modern S08 alternative with active supply chain (vs MC9S08QD2VSC)
Design Notes
The MC908QY4AMDTE is in Last Time Buy (LTB) per NXP product-change notifications; sourcing new production quantities requires distributor allocation or independent broker inventory. For new designs, NXP recommends migrating to the S9S08SG4E2CTJ or MC9S08QD2VSC families to ensure long-term availability. Verify the latest PCN documents before committing to the BOM. Quote-based ordering may add 4-8 weeks lead time vs. shelf-stock.
The 16-TSSOP package power dissipation in a typical 8 MHz embedded-control application is well below 100 mW; thermal management is rarely a concern. Estimated: with VDD=5V, I_active=20mA, and all GPIO in default state, total power is approximately 100 mW. Junction temperature rise at room-temperature ambient (25C) is negligible. If higher current loads are switched via GPIO pins, add series resistors to limit peak currents and prevent latch-up.
Place the 0.1 uF VDD decoupling capacitor within 5 mm of pin 2 (VDD) and connect the VSS pin (pin 3) directly to the ground plane with a via. Route the OSC1 pin (pin 16) and any external crystal traces with short, symmetric layout to minimize EMI and oscillator startup variance. Use guard traces around the IRQ pin (pin 1) to prevent false interrupts in noisy environments. Reserve footprint space for an optional external crystal if the internal oscillator is insufficient for UART baud-rate accuracy.
The HC08Q's 8-channel 10-bit ADC requires input impedance below 10 kohm for full 10-bit accuracy; higher-impedance sensors (like high-resistance thermistors) need an op-amp buffer. Sample rate at 8 MHz bus is approximately 15-20 us per conversion, allowing ~50 kSample/s aggregate across channels. Add an external voltage reference if absolute ADC accuracy must exceed +/-2 LSB; the internal bandgap reference has +/-5% tolerance.
The 16-TSSOP 4.40 mm body width requires 0.65 mm pitch PCB pads and 0.40 mm via pitch for fan-out routing. Use a 4-layer stack-up with continuous ground plane beneath the MCU to maximize heat dissipation and minimize EMI; avoid routing signal traces beneath the package. For BDM programming, expose the BKGD and RESET pins to a 2-pin header or pogo-pin test points for in-circuit firmware updates during production programming.
Compliance Information
RoHS/REACH/lead-free status not explicitly confirmed in provided web data; verify with NXP product compliance documentation. The part is industrial-grade -40C to +125C operating range but does NOT carry AEC-Q100 automotive qualification. For automotive designs, choose MC9S08AW32MFGE or other AEC-Q100 listed S08 derivatives.
