MC9S08AW48CPUE - 8-bit S08 MCU 48KB Flash 40MHz | NXP
MPN: MC9S08AW48CPUE ✗ End of Life| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MC9S08AW48CPUE Overview
An 8-bit microcontroller is a single-chip computer whose CPU processes data in 8-bit words. Within the semiconductor hierarchy, the MC9S08AW48 belongs to the S08AW family of the HCS08 (HC08 successor) core architecture, which sits under NXP's general-purpose MCU portfolio for embedded control. MCUs of this class combine processor, flash, RAM, timers, serial interfaces, and analog peripherals on one die, replacing multi-chip logic designs in cost-sensitive systems.
Key features include the enhanced S08 CPU executing the HC08 instruction set with an added BGND instruction, single-wire background debug mode (BDM) for low-cost in-circuit debugging, and 38 general-purpose I/O lines. The family integrates a 16-channel 10-bit ADC and multiple serial modules, allowing sensor interfacing and communication without external components.
Technically, the S08AW series runs the CPU at up to 40MHz with a 20MHz internal bus, using a CISC architecture with dense instruction encoding well suited to C compilers such as CodeWarrior. Flash memory is in-system programmable, and supply operation spans 2.7V to 5.5V, permitting direct connection to 3.3V or 5V industrial rails. The device supports both industrial and automotive industry applications per NXP's family overview.
Typical applications include industrial control and automation nodes, automotive body and convenience modules, appliance and motor control boards, and consumer electronics requiring low-cost, robust 8-bit control with analog sensing.
Design consideration: the part is listed NRND (Not Recommended for New Designs) by NXP, so new designs should evaluate the S08P or S08DZ successors, while existing designs can continue sourcing through authorized channels or Rochester Electronics.
This page synthesizes distributor pricing context, drop-in alternatives, lifecycle status, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MC9S08AW48CPUE — 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 MC9S08AW48CPUE (same form factor and footprint) — differing in Package, Core Processor, Flash Memory, Program Memory Size, RAM Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08AW60CPUE
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC9S08AW32CPUE
✅ Drop-In✓ In Stock
$6.1 / Unit
View Datasheet →MC9S08AW16CPUE
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.2 / Unit
View Datasheet →S9S08AW60E5MPUE
✅ Drop-In📋 Reference alternative (not in catalog)
S9S08DZ48F2CLH
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08AW48CPUE Maximum Ratings & Electrical Characteristics
| Core Processor | S08 (HCS08) 8-bit CISC |
| Core Size | 8-bit |
| CPU Speed | 40 MHz |
| Internal Bus Frequency | 20 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 48 KB (48K x 8) |
| Supply Voltage Range | 2.7 V to 5.5 V |
| I/O Count | 38 |
| Package Type | 64-LQFP (10x10 mm, 0.5 mm pitch, MO-220VKKD-2) |
| Package Height | 1 mm |
| Mounting Type | Surface Mount |
| Debug Interface | Single-wire background debug mode (BDM) |
| Instruction Set | HC08 with added BGND instruction |
| Packaging | Tray |
| Lifecycle Status | NRND (Not Recommended for New Designs) |
MC9S08AW48CPUE 1 mm Pin Configuration Guide
Pin configuration for MC9S08AW48CPUE (1 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 MC9S08AW48CPUE.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S08AW48CPUE is suitable for 6 applications: Industrial Control and Automation, Automotive Body and Convenience Modules, Appliance and White Goods Control, Motor Control and Power Conversion, Building Control and Security Panels, Consumer Electronics and Handheld Devices.
Industrial Control and Automation
The MC9S08AW48CPUE fits industrial control nodes that need deterministic 8-bit control with analog sensing. Its 40MHz S08 core with 20MHz internal bus executes control loops fast enough for motor sequencing, valve control, and sensor polling, while the 16-channel 10-bit ADC reads potentiometers, thermistors, and 0-10V conditioned signals across the 2.7V to 5.5V supply range. With 38 general-purpose I/O lines, one device drives relays, indicator LEDs, and reads limit switches without port expanders. The 48KB flash accommodates communication stacks and field-updatable firmware, and the single-wire BDM interface enables in-circuit reprogramming during production. Because the part is NRND, new industrial designs should evaluate S08P successors, but legacy PLC I/O modules and retrofit boards can continue using the AW48 with second-source lifecycle support.
Recommended
Automotive Body and Convenience Modules
NXP's S08AW family explicitly supports the automotive industry, and the MC9S08AW48CPUE class of parts has served in body-control, lighting, and convenience modules such as mirror switches, seat controllers, and window lift nodes. The wide 2.7V to 5.5V supply tolerance handles automotive load-dump-conditioned 5V rails, the 10-bit ADC reads NTC temperature sensors and potentiometer position inputs, and 38 I/O lines drive lamps, relays, and LIN or CAN transceivers via serial interfaces. The 48KB flash provides headroom for diagnostic routines and fault logging. For new automotive programs, the automotive-designated S9S08AW60E5MPUE in the same package family should be used instead of the commercial AW48, since the AW48 is NRND and automotive programs require qualified S9S08 devices.
Recommended
Appliance and White Goods Control
Home appliance control boards - washing machines, dishwashers, and small kitchen appliances - are a classic fit for the MC9S08AW48CPUE. The 5V-tolerant 2.7V-5.5V operation matches transformer-based appliance power supplies, and the 10-bit ADC digitizes user-interface potentiometers, NTC thermistors, and current-sense outputs for motor load monitoring. The S08 core at 40MHz handles triac phase-angle control and relay sequencing timing with margin, while 48KB flash stores multi-language UI logic and wash-cycle state machines. The single-wire background debug port allows factory programming with a simple two-wire fixture, reducing production test cost. With NRND status, ongoing appliance production should plan migration to NXP's newer S08 variants, but the AW48 remains serviceable for existing board designs.
Recommended
Motor Control and Power Conversion
The MC9S08AW48CPUE serves low-end BLDC and DC motor control where an 8-bit MCU suffices. The S08 core's 20MHz bus provides adequate interrupt latency for PWM update rates in the several-kHz range used for fan, pump, and small motor drives, and timer modules generate complementary PWM outputs for half-bridge stages. The 10-bit ADC samples back-EMF or shunt-current feedback for sensorless commutation, while 38 I/O lines manage Hall inputs, fault flags, and enable signals. The 48KB flash stores commutation tables plus protection state machines for overcurrent and stall detection. Designers should budget interrupt timing carefully at high PWM frequencies and consider NXP's dedicated motor-control MCUs (56F8xxx DSC family) when field-oriented control is required, since the AW48 is best suited to scalar control schemes.
Recommended
Building Control and Security Panels
Access-control readers, fire-alarm panels, and HVAC zone controllers benefit from the MC9S08AW48CPUE's blend of memory, analog, and I/O. The 48KB flash supports key-processing firmware, event logs, and RS-485 or serial networking stacks, while the 10-bit ADC reads door-contact conditioning, tamper switches through resistor networks, and battery-voltage supervision. The wide 2.7V to 5.5V input range allows operation directly from backup-battery-fed 5V rails with brownout margin. Thirty-eight I/O lines drive keypad matrices, LED indicators, and lock actuators from a single controller, and the low-cost single-wire debug interface simplifies field firmware updates during installation. Battery-backed designs should verify stop and wait mode currents in the family datasheet to size the backup supply correctly.
Recommended
Consumer Electronics and Handheld Devices
Cost-sensitive consumer products such as chargers, small displays, toy electronics, and personal-care devices use the MC9S08AW48CPUE when simple firmware and robust analog inputs are needed. The HCS08's CISC instruction set compiles compactly, keeping full product logic within 48KB flash including button debouncing, LED or LCD driving, and battery-charging supervision via the 10-bit ADC. Operation from 2.7V allows direct use of two-cell battery stacks or 3.3V LDO outputs, while 5V operation suits USB-powered accessories. The LQFP-64's 0.5 mm pitch is hand-solderable for low-volume consumer repairs, and tray packaging suits medium-volume assembly lines. As the part is NRND, consumer product roadmaps should qualify the pin-compatible AW60 or newer S08 derivatives in the next board spin to protect long-term supply.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08AW48CPUE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08AW60CPUE | MC9S08AW32CPUE | MC9S08AW16CPUE | S9S08AW60E5MPUE | S9S08DZ48F2CLH |
|---|---|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm, 0.5 mm pitch) | 64-LQFP - same | 64-LQFP - same | 64-LQFP - same | 64-LQFP - same | 64-LQFP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Flash Memory | 48 KB | 60 KB | 32 KB | 16 KB | 60 KB | 48 KB |
| Core Architecture | S08 (HCS08) 8-bit CISC | S08 8-bit CISC | S08 8-bit CISC | S08 8-bit CISC | S08 8-bit CISC | S08 8-bit CISC |
| Target Market | Industrial + Automotive (commercial grade) | Industrial + Automotive | Industrial + Automotive | Industrial + Automotive | Automotive-designated (S9S08 prefix) | Automotive-designated (S9S08 prefix) |
Key Differentiators
- Best balance of flash size in the S08AW 64-LQFP family (vs MC9S08AW32CPUE)
- Firmware headroom for growth without board respin (vs MC9S08AW16CPUE)
- Lower cost for memory-fitting designs vs automotive sibling (vs S9S08AW60E5MPUE)
- Trade-off: NRND lifecycle status (vs MC9S08AW60CPUE)
Design Notes
The MC9S08AW48CPUE is NRND per NXP's official product page. Do not start new designs on this part. For existing designs, secure lifecycle stock through Rochester Electronics (listed on DigiKey Marketplace) or plan firmware-compatible migration to the MC9S08AW60CPUE, which offers 60KB flash in the identical 64-LQFP footprint, allowing a solder-down swap with only linker and memory-map changes in CodeWarrior.
The device operates from 2.7V to 5.5V. When running near 5V on shared industrial rails, decouple each supply pin with 100 nF ceramic capacitors placed within a few millimeters of the pin, plus one bulk 4.7 uF to 10 uF capacitor near the LQFP. Verify that the ADC reference configuration matches the supply rail used, since readings scale with VDDA; noisy 5V switch-mode rails should be filtered or the ADC sampling synchronized away from switching events.
The 64-LQFP (10x10 mm, 0.5 mm pitch, MO-220VKKD-2) has fine-pitch leads requiring solder-mask-defined or non-solder-mask-defined pads per IPC-7351 guidance; confirm with your fab. Route the single-wire BDM (BGND debug) header to a 4-pin or 6-pin tag connector during layout - retrofitting debug access after tape-out is a common and costly mistake on 8-bit MCU boards.
With 38 GPIOs toggling at 20MHz internal bus rates, ground bounce on the LQFP is manageable but not negligible. Use multiple ground pins as return paths, group fast-switching outputs away from the analog ADC input pins, and add series resistors (33-100 ohm) on long ribbon-cable or connector-driven outputs to reduce EMI and ringing. This is standard practice per NXP S08 family hardware design guidance.
Compliance Information
The NXP product page lists an Environmental Quality section for this part, but specific RoHS/REACH/lead-free values were not present in the retrieved web data. Consult NXP's product page environmental documentation. The PUE package suffix is typically NXP's lead-free LQFP designation, but this must be confirmed on the official page.
