S9S08AW16AE0CLC - 8-bit S08 MCU 16KB Flash 40MHz | NXP
MPN: S9S08AW16AE0CLC ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.65 | $26.50 |
| 100 | $2.35 | $235.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.9 | $1,900.00 |
S9S08AW16AE0CLC Overview
An 8-bit microcontroller unit (MCU) is a single integrated circuit that combines a processor core, program memory (Flash), data memory (RAM), and peripherals such as timers and serial interfaces on one die. Within the system hierarchy, an MCU sits at the lowest level of embedded control - below 16/32-bit MCUs and application processors - and belongs to the broader family of semiconductor integrated circuits used for real-time control, sensing, and human-machine interfaces in vehicles and industrial equipment.
Key features of the S9S08AW16AE0CLC include the enhanced S08 core running at up to 40MHz bus-compatible speed, 16KB (16K x 8) of Flash program memory with in-circuit reprogrammability, 1K x 8 bytes of RAM, and 22 general-purpose I/O lines. On-chip peripherals include I2C, SCI (UART), and SPI serial communication modules plus PWM, low-voltage detect (LVD), power-on reset (POR), and a watchdog timer (WDT) - reducing external component count in cost-sensitive designs.
The S9S08AW16 belongs to the Freescale/NXP HCS08 family, a low-cost, high-performance line of 8-bit MCUs. The AW family shares the enhanced S08 core, a single-wire background debug interface, and multiple memory options (16KB, 32KB, 48KB, 60KB Flash), so software can scale across family members with minimal code changes. The automotive-qualified S9 prefix variant carries NXP automotive-grade process qualification, supporting -40C to +85C ambient operation.
Typical applications include automotive body electronics (door modules, seat control, lighting control), HVAC blowers and actuators, industrial sensor nodes, and small appliance control boards where an 8-bit MCU with modest Flash and robust I/O is sufficient.
Design consideration: because this part is End of Life per the NXP product page, new designs should verify remaining lifetime buys and confirm any drop-in replacement on the same LQFP-32 footprint before committing to layout; second sourcing or a firmware-compatible family member is strongly advised.
This page synthesizes verified distributor listings, lifecycle status, drop-in alternative analysis, and design notes not found in the manufacturer datasheet. Pricing shown is an estimate pending confirmation as of 2026-10-18.
Drop-in alternatives for S9S08AW16AE0CLC — 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 S9S08AW16AE0CLC (same form factor and footprint) — differing in Package, Core, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08AW16CLC
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC9S08AW16CFJE
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
S9S08AW16AE0CLC Maximum Ratings & Electrical Characteristics
| Core Processor | S08 (HCS08) |
| Core Size | 8-Bit |
| Maximum Clock Frequency | 40 MHz |
| Program Memory Size | 16 KB (16K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 1K x 8 |
| EEPROM Size | - |
| Connectivity | I2C, SCI, SPI |
| Peripherals | LVD, POR, PWM, WDT |
| Number of I/O | 22 |
| Operating Temperature | -40C to +85C |
| Package | 32-LQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| Qualification | Automotive Qualified |
| Part Status | End of Life (per NXP product page) |
| Series | S08 / MC9S08AW (HCS08 family) |
S9S08AW16AE0CLC 32-lqfp (7x7 mm) Pin Configuration Guide
Pin configuration for S9S08AW16AE0CLC (32-lqfp (7x7 mm) 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 S9S08AW16AE0CLC.
Refer to the datasheet for full pin configuration.
Typical Applications
S9S08AW16AE0CLC is suitable for 6 applications: Automotive Body Electronics, Automotive Lighting Control, HVAC Blower and Actuator Control, Industrial Sensor Nodes, Small Appliance Control, Battery Chargers and Power Management Boards.
Automotive Body Electronics
The S9S08AW16AE0CLC was designed for automotive body modules such as door controllers, seat adjusters, and mirror controls. Its automotive qualification and -40C to +85C rating meet vehicle environmental requirements, while the 22 GPIO lines directly drive relays, motors, and switches without expansion logic. The I2C and SCI interfaces connect to in-module sensors or LIN-class transceivers, and the watchdog timer plus low-voltage detect provide the fault monitoring expected in vehicle electronics. The 16KB Flash accommodates typical body-module firmware including button debouncing, motor sequencing, and diagnostic routines. With 40MHz S08 performance, timing-critical PWM generation for soft-start loads runs deterministically. Because the part is EOL, use it for service replacement and existing programs; new body modules should select a current NXP automotive MCU family.
Recommended
Automotive Lighting Control
Interior and exterior lighting modules benefit from the S9S08AW16AE0CLC's PWM capability and robust GPIO count. The on-chip PWM channels drive LED driver stages or bulb relay FETs with dimming frequencies free of visible flicker, while the 40MHz S08 core handles switch inputs, fault detection, and communication simultaneously. The low-voltage detect function protects against cranking transients on the 12V battery rail when paired with a suitable regulator, and the watchdog ensures lights fail safely. I2C allows connection to ambient-light sensors for automatic dimming. The 32-LQFP 7x7 mm package fits compact lamp-driver PCBs inside headlamp or dome-light housings. The 16KB Flash holds modulation tables and diagnostic code with headroom for OEM customization variants.
Recommended
HVAC Blower and Actuator Control
Vehicle HVAC blower controllers and vent actuators are a classic AW family application. The S9S08AW16AE0CLC generates PWM for blower motor driver stages, reads position feedback through its SCI/SPI interfaces, and sequences dampers via GPIO-driven H-bridges. Its automotive qualification covers the harsh under-dash environment of -40C to +85C. The 16KB Flash stores lookup tables mapping cabin-temperature commands to blower duty cycles, and 1KB RAM buffers sensor readings and communication frames. LVD and POR guarantee defined startup during battery sag, while the WDT prevents stall-induced actuator damage. The 22 I/O lines eliminate port expanders, keeping module BOM cost low - the key design goal of the low-cost HCS08 family.
Recommended
Industrial Sensor Nodes
In factory automation, the S9S08AW16AE0CLC serves as a compact sensor acquisition node. Its SPI and I2C ports read ADC and temperature sensors, the SCI/UART streams processed data to a PLC gateway, and 22 GPIO lines switch local actuators or status LEDs. The 40MHz S08 core executes averaging and threshold filtering with microsecond-level latency, supporting real-time reaction to process changes. Flash reprogramming in-circuit allows field firmware updates during maintenance windows. While the automotive variant exceeds industrial temperature needs (-40C to +85C covers most factory floors), reliability is enhanced by LVD and POR supervisory functions on-chip. The 7x7 mm LQFP keeps node PCBs small for mounting directly on machinery.
Recommended
Small Appliance Control
Consumer appliance boards - coffee makers, fans, small pumps - use the S9S08AW16AE0CLC where 8-bit control suffices. The PWM peripherals drive triac firing or motor driver stages for speed control, GPIO reads user buttons and encoders, and the SCI port links to a display driver or Wi-Fi module for smart-appliance variants. The 16KB Flash is adequate for state machines, safety interlocks, and LED/LCD user-interface code. Watchdog and LVD functions improve product safety compliance by enforcing defined behavior during brownouts. Although this is the automotive-qualified grade, the industrial MC9S08AW16CLC offers the same die and footprint for consumer cost targets - a direct drop-in swap requiring no layout or firmware changes.
Recommended
Battery Chargers and Power Management Boards
Smart charger boards use the S9S08AW16AE0CLC to implement charge-profile state machines: PWM regulates current via a power stage, the SCI port reports status to a host, and GPIO drives LED indicators and relay control. The 40MHz core closes the control loop fast enough for constant-current/constant-voltage transitions on lead-acid and NiMH chemistries. LVD and POR ensure the MCU never drives the power stage during supply anomalies, while the watchdog recovers from firmware lockups - a critical safety function in charger design. The 16KB Flash stores multiple charge profiles selectable by GPIO straps, and 22 I/O lines accommodate temperature-sensor inputs and key detection without external logic.
Recommended
Recommended Products Summary
Engineering reference data for S9S08AW16AE0CLC — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08AW16CLC | MC9S08AW16CFJE | MC9S08AW60CPUE |
|---|---|---|---|---|
| Package | 32-LQFP (7x7 mm) | 32-LQFP (7x7 mm) - same | 32-LQFP (7x7 mm) - same | 64-LQFP - different, PCB redesign required |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Speed | S08, 40 MHz | S08, 40 MHz | S08, 40 MHz | S08, 40 MHz |
| Flash Memory | 16 KB | 16 KB | 16 KB | 60 KB |
| RAM | 1 KB | 1 KB | 1 KB | 2 KB |
| Qualification | Automotive Qualified | Industrial grade | Industrial grade | Industrial grade |
Key Differentiators
- Automotive qualification (vs MC9S08AW16CLC)
- Smallest AW family footprint (vs MC9S08AW60CPUE)
- Scalable single-family code portability (vs MC9S08AW16CFJE)
Design Notes
The S9S08AW16AE0CLC is End of Life per the NXP product page. Do not start new designs on this part. For service replacements, secure last-time-buy stock through authorized distributors and qualify the industrial MC9S08AW16CLC on the same 32-LQFP footprint as a second source. Check NXP discontinuance and replacement product change notices before committing purchasing volumes, and confirm remaining shelf life and MSL handling of any EOL inventory you buy.
Use a conventional 32-LQFP 0.8 mm pitch land pattern per the package drawing in the S9S08AW family datasheet. Place 0.1 uF ceramic decoupling capacitors directly across each VDD/VSS pair as close to the pins as possible, plus a bulk 4.7-10 uF capacitor near the regulator output feeding the MCU. Route the background debug/single-wire interface to a 4-pin programming header on production PCBs - the AW family relies on this interface for flash programming, and omitting the header makes field reprogramming impossible.
Verify the exact supply voltage range in the S9S08AW family datasheet before designing the power tree, since HCS08 devices typically support narrow 5V or 2.7-5.5V windows depending on frequency. When running the bus near 40MHz, operate at the upper portion of the voltage range and confirm derating tables. Use the on-chip low-voltage detect with interrupt enabled so the MCU can complete state saving before reset during battery sag in automotive 12V systems, where cranking transients cause deep brownouts.
Compliance Information
The part is described as Automotive Qualified by NXP and distributors. Detailed RoHS/REACH/lead-free status was not present in the retrieved data - confirm on the official NXP product page Environmental Quality section.