MC9S08AW16CPUE - 8-bit S08 MCU, 16KB Flash, 40MHz | NXP
MPN: MC9S08AW16CPUE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.4 | $44.00 |
| 100 | $3.95 | $395.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.2 | $3,200.00 |
MC9S08AW16CPUE Overview
An 8-bit MCU (microcontroller unit) is a single-chip computer that combines a processor core, memory, and peripherals such as timers, serial interfaces, and ADCs. Within the broader hierarchy, the MC9S08AW16 sits in the embedded controller category below 32-bit MCUs and above simple 4-bit controllers, serving cost-sensitive control tasks where complexity and price must both stay low.
Key features include the enhanced S08 core with HC08 instruction set plus the added BGND instruction, single-wire background debug mode (BDM) for low-cost programming and debugging, an internal oscillator option that eliminates external crystals in many designs, and industrial/automotive-grade pedigree. The 10-bit ADC and rich timer suite suit analog monitoring and motor or lighting control directly.
Technically, the S08AW family architecture delivers efficient CISC execution, in-application programmable FLASH, and low-power wait/stop modes. Peripherals typically include SCI, SPI, and IIC serial modules alongside the 16-channel ADC, enabling compact single-chip designs for sensor acquisition and communication nodes.
Typical applications include home appliance control boards, industrial sensor nodes and small automation equipment, and automotive body or comfort modules, where the wide 2.7V-5.5V supply range tolerates unregulated 5V or 3.3V rails.
Design note: because this part is NRND (Not Recommended for New Designs), new projects should evaluate newer S08 or ARM Cortex-M0+ NXP alternatives, while existing designs continue to source this MPN for maintenance.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for MC9S08AW16CPUE — 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 MC9S08AW16CPUE (same form factor and footprint) — differing in Package, Core Processor, Instruction Set, Core Architecture, Family.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08AW32CPUE
✅ Drop-In✓ In Stock
$6.1 / Unit
View Datasheet →MC9S08AW48CPUE
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC9S08AW60CPUE
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC9S08AW16CPUE Maximum Ratings & Electrical Characteristics
| Core Processor | S08 (HCS08) |
| Core Size | 8-Bit |
| Core Architecture | CISC |
| Maximum Clock Frequency | 40 MHz (CPU) / 20 MHz (bus) |
| Program Memory Size | 16KB (16K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 1K x 8 |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Operating Temperature | -40C to +85C |
| ADC Resolution | 10-bit |
| ADC Channels | 16 |
| I/O Ports | 38 |
| Oscillator Type | Internal |
| Debug Interface | Single-wire background debug mode (BDM) |
| Package | 64-LQFP (10x10 mm), 0.50 mm pitch, MO-220VKKD-2 |
| Mounting Type | Surface Mount |
| Instruction Set | HC08 with added BGND instruction |
MC9S08AW16CPUE 64-lqfp (10x10 mm), 0.50 mm pitch, mo-220vkkd-2 Pin Configuration Guide
Pin configuration for MC9S08AW16CPUE (64-lqfp (10x10 mm), 0.50 mm pitch, mo-220vkkd-2 package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MC9S08AW16CPUE.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S08AW16CPUE is suitable for 6 applications: Home Appliance Control, Industrial Sensor Nodes, Automotive Body Electronics, Motor Control and Lighting, Battery-Powered Portable Devices, Legacy System Maintenance and EOL Replacement.
Home Appliance Control
The MC9S08AW16CPUE fits appliance control boards such as washing machines, microwave ovens, and air-conditioner units, where its 16KB FLASH covers typical control state machines and the internal oscillator removes the cost of external crystals. The 16-channel 10-bit ADC reads temperature sensors (NTC), potentiometers, and supply-voltage feedback with roughly 4.9mV LSB resolution at a 5V reference, while 38 GPIO drive relays, TRIAC triggers, LEDs, and seven-segment displays. Its 2.7V to 5.5V supply tolerance handles noisy, poorly regulated mains-derived rails, and -40C to +85C operation covers cold garage installations. Single-wire BDM enables low-cost in-factory programming and field rework of appliance firmware.
Recommended
Industrial Sensor Nodes
In industrial monitoring nodes, the MC9S08AW16CPUE acquires analog signals through its 16-channel 10-bit ADC while the SCI, SPI, and IIC modules communicate with RS-485 transceivers, EEPROM, and displays. The 40MHz S08 core executes control loops and simple protocol stacks within the 16KB FLASH and 1KB RAM envelope, and low-power wait/stop modes suit battery-buffered or intermittently powered sensors. The -40C to +85C rating and 2.7V-5.5V supply range tolerate panel wiring transients and unregulated 5V rails. Because the part is NRND, new node designs should plan migration to active S08P or Kinetis parts, but the S08AW remains a proven, validated choice for maintaining deployed installations.
Recommended
Automotive Body Electronics
NXP states the S08AW family supports automotive industry applications, and the MC9S08AW16CPUE suits body and comfort functions such as seat-adjust modules, mirror controllers, window lift assistants, and interior lighting. The -40C to +85C ambient rating matches cabin and near-cabin environments, while the wide 2.7V-5.5V supply window rides through cranking-related voltage dips on regulated 5V rails. The 10-bit ADC reads potentiometer position feedback, the timers generate PWM for lamp dimming and motor drives, and 38 GPIO handle switch matrices and relay control. Existing automotive customers should verify grade qualification requirements and consider last-time-buy planning given the NRND lifecycle status.
Recommended
Motor Control and Lighting
The MC9S08AW16CPUE controls small DC motors, fans, and lamp loads using its timer PWM outputs to drive MOSFET half-bridges or TRIAC stages. The 10-bit ADC closes the loop with current-sense resistors, NTC thermistors for winding or heatsink temperature, and speed-feedback signals, while the 40MHz/20MHz bus clock supports current-control loop rates adequate for fans and small pumps. 16KB FLASH stores ramp profiles, fault handling, and simple commutation routines, and the internal oscillator keeps BOM cost down for cost-driven lighting ballasts. 5V operation simplifies gate-drive interface circuits, and BDM supports rapid firmware tuning of PWM dead-time and current limits during development.
Recommended
Battery-Powered Portable Devices
With stop and wait low-power modes and an internal oscillator, the MC9S08AW16CPUE suits battery-operated meters, remote controls, and handheld instruments. Running from two or three cells within the 2.7V-5.5V range, the device spends most of its time in stop mode, waking on keyboard interrupts or timer events to sample the 10-bit ADC (battery voltage, sensor input) and update an LCD through GPIO or SPI. 16KB FLASH holds the application, display tables, and simple communication protocol, while 38 GPIO support keypads and indicators. The -40C to +85C rating covers outdoor meters, and single-wire BDM allows end-of-line calibration firmware to be flashed during production.
Recommended
Legacy System Maintenance and EOL Replacement
A primary ongoing use of the MC9S08AW16CPUE is sustaining existing products whose firmware and PCBs were designed around the S08AW family. Because MC9S08AW32/48/60CPUE are pin-to-pin compatible in the same 64-LQFP (10x10 mm) footprint, a board designed for the AW16 can accept larger-memory siblings without rework, extending product life when firmware grows. NRND status means supply continuity depends on distributor residuals and independent distributors, so procurement teams should quantify annual consumption and execute last-time-buy or footprint-compatible migration plans. Firmware developed in CodeWarrior ports across the family with only memory-map and linker-file changes, minimizing requalification effort.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08AW16CPUE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08AW32CPUE | MC9S08AW48CPUE | MC9S08AW60CPUE |
|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Program FLASH | 16KB | 32KB | 48KB | 60KB |
| RAM | 1KB | 2KB | 2KB | 2KB |
| Core / Frequency | S08, 40MHz CPU | S08, 40MHz CPU | S08, 40MHz CPU | S08, 40MHz CPU |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| ADC | 16-ch, 10-bit | 16-ch, 10-bit | 16-ch, 10-bit | 16-ch, 10-bit |
Key Differentiators
- Lowest memory/cost point of the 64-pin S08AW family (vs MC9S08AW60CPUE)
- Wide 2.7V-5.5V supply tolerance (vs MC9S08AW32CPUE)
- Internal oscillator eliminates external crystal BOM cost (vs MC9S08AW48CPUE)
Design Notes
Design the 5V rail for 2.7V-5.5V tolerance per NXP datasheet ratings. Decouple VDD/VDDA with 0.1uF ceramics placed within 5mm of the pins, plus a 4.7uF-10uF bulk capacitor per supply group. Separate analog and digital grounds with a single-point connection under the ADC region to preserve 10-bit ADC accuracy. On mains-derived appliance supplies, add series resistance or an RC filter to VDDA to attenuate switching transients that would otherwise appear as ADC noise.
Route the single-wire BDM connector (BKGD, RESET, VDD, GND) to a standard 6-pin header even in production boards; with the part NRND, field firmware updates and debugging depend on this access. Reserve a footprint-tolerant layout: because MC9S08AW32/48/60CPUE share the identical 64-LQFP (10x10 mm) pinout, a design laid out for the AW16 can accept larger-memory siblings later, so avoid using FLASH-reserved pins in ways that constrain a future memory upgrade.
The most common pitfall with this part is lifecycle risk: MC9S08AW16CPUE is NRND, so new designs should not adopt it, and existing designs should quantify consumption and execute a last-time-buy or plan a drop-in migration to MC9S08AW60CPUE. Second, do not exceed 20MHz bus frequency assumptions in timing calculations even though the CPU runs at 40MHz - peripheral timing derives from the bus clock. Third, GPIO multiplexing means ADC channels share pins with digital functions; verify analog pin allocation before routing.
Compliance Information
Environmental quality data is available on the NXP product page but specific RoHS/REACH status was not present in the retrieved web data. The S08AW family supports industrial and automotive segments per NXP; verify grade qualification directly with NXP for AEC-Q100 requirements.
