MC9S08PA8AVTG - 8-bit S08 MCU 8KB Flash 20MHz TSSOP-16 | NXP
MPN: MC9S08PA8AVTG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.65 | $0.65 |
| 10 | $0.59 | $5.90 |
| 100 | $0.52 | $52.00 |
| 500 | $0.47 | $235.00 |
| 1,000 | $0.42 | $420.00 |
MC9S08PA8AVTG Overview
An 8-bit microcontroller is a self-contained computing device that integrates a CPU core, program memory (flash), data memory (RAM), and peripherals on a single chip. Within the power management and embedded control hierarchy, an MCU such as the S08PA family member sits at the lowest system layer, replacing discrete logic and analog control circuits with firmware-driven control, which reduces bill-of-materials cost and board area in high-volume products.
Key features include 8 KB (8K x 8) of on-chip flash for code storage, on-board EEPROM for parameter retention without external memory, a 20 MHz internal bus clock, and an integrated analog comparator plus ADC that simplify mixed-signal designs. The flex timer peripheral supports motor control topologies such as PWM generation for BLDC and brushed DC drives, a distinguishing capability at this price point.
Technically, the S08 core is a CISC architecture descended from the 6808/HCS08 lineage, offering dense code and mature development tool support through NXP CodeWarrior. Low-power modes allow sleep currents suitable for always-on automotive body functions, and the 5V operating range provides robust noise immunity in electrically harsh 12V vehicle environments where 3.3V parts require level shifting.
Typical applications include automotive body electronics (door modules, seat control, lighting), small motor control drives, and industrial sensors and actuators where flash-plus-EEPROM integration eliminates external memory components.
A key design consideration is supply decoupling: place a 100 nF ceramic capacitor directly at the VDD pin, and use the internal clock sources where possible to minimize external crystal cost, trading slight frequency accuracy for component savings.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing verified as of 2026-10-18.
Drop-in alternatives for MC9S08PA8AVTG — 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 MC9S08PA8AVTG (same form factor and footprint) — differing in Package, Core Architecture, Core Processor, EEPROM, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08PA4AVTGR
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08PA8VTG
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08PT8AVTG
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08PA8AVTG Maximum Ratings & Electrical Characteristics
| Core Processor | S08 (HCS08L) 8-bit CISC |
| Core Size | 8-bit |
| Speed | 20 MHz |
| Flash Memory | 8 KB (8K x 8) |
| EEPROM | Yes (integrated) |
| Supply Voltage | 5 V |
| Peripherals | ADC, Analog Comparator, Flex Timer (motor control), LVD, COP |
| Package | 16-TSSOP |
| Mounting Type | Surface Mount |
| Supplier Device Package | TSSOP-16 |
| Base Product Number | MC9S08PA8 |
| Series | S08PA |
MC9S08PA8AVTG tssop-16 Pin Configuration Guide
Pin configuration for MC9S08PA8AVTG (tssop-16 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 MC9S08PA8AVTG.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S08PA8AVTG is suitable for 6 applications: Automotive Body Electronics, Small Motor Control Drives, Industrial Sensors and Transmitters, Home Appliance Control, Lighting Control Modules, Battery-Powered Portable Devices.
Automotive Body Electronics
The MC9S08PA8AVTG fits automotive body modules - door control, seat adjustment, mirror positioning, and interior lighting - because its 5V supply domain offers superior noise immunity in electrically harsh 12V vehicle networks where 3.3V devices need level shifting and extra filtering. The integrated EEPROM retains calibration constants, learned positions, and configuration flags across power cycles without an external serial EEPROM, and the 8 KB flash accommodates LIN-style communication and control logic for simple modules. Placed as the single smart component in the module with its flex timer driving lamp or motor loads via low-side drivers, the device reduces board area and component count; the trade-off is the 20 MHz core ceiling, which limits the module to tasks without complex protocol stacks or heavy math.
Recommended
Small Motor Control Drives
The MC9S08PA8AVTG suits small BLDC and brushed DC motor drives because, according to the S08PA family description, it integrates a motor control flex timer that produces complementary PWM outputs with dead-time insertion - unusual at this price point. The on-chip analog comparator supports cycle-by-cycle overcurrent protection by comparing a shunt voltage against the internal reference, while the ADC samples back-EMF or hall inputs for commutation. Running at 20 MHz, the core closes current loops at several kHz, adequate for fans, pumps, and small appliance motors. In a typical topology the MCU drives a discrete three-phase gate driver; the main consideration is that complex field-oriented control exceeds the 8 KB flash and 8-bit headroom, so sensorless trapezoidal (six-step) control is the practical ceiling.
Recommended
Industrial Sensors and Transmitters
The MC9S08PA8AVTG is well matched to industrial sensor nodes and 4-20 mA loop-powered transmitters thanks to its 5V operation, integrated ADC for digitizing bridge or potentiometer inputs, and EEPROM for storing per-unit calibration coefficients factory-programmed at end-of-line. The 8 KB flash holds the sampling routine, linearization tables, and communication logic, while the analog comparator can generate alarms against programmable thresholds with zero CPU involvement. Because the S08PA's low-power modes allow sleep between samples, battery-backed or loop-powered nodes minimize average current draw. The design trade-off is ADC accuracy: for sub-0.1% measurement, an external precision ADC such as a delta-sigma part is typically added in front of the MCU rather than relying on the internal converter alone.
Recommended
Home Appliance Control
The MC9S08PA8AVTG serves as the main or auxiliary controller in small home appliances - coffee makers, fans, hair dryers, and vacuum accessories - where its single-chip integration of flash, EEPROM, ADC, comparator, and PWM timer replaces several discrete components and reduces cost per unit in high volumes. The 5V rail is directly generated by a low-cost linear regulator from the rectified mains supply, and the EEPROM stores user preferences and cycle counters that persist through unplugging. The flex timer generates phase-control or relay-drive waveforms for heater and motor loads, while the ADC reads NTC thermistors and user buttons. The constraint is connectivity: the device lacks native USB/Ethernet, so appliances needing Wi-Fi pairing pair it with an external module over a serial interface.
Recommended
Lighting Control Modules
In LED driver and ballast control boards, the MC9S08PA8AVTG provides the intelligence layer: its flex timer PWM dims LED strings via a buck converter's MOSFET, the ADC monitors output current and thermal feedback from an NTC, and the analog comparator implements fast secondary overcurrent protection. The 5V domain interfaces cleanly with standard optocouplers for isolated dimming signals (0-10 V or DALI-style), and the EEPROM stores last-set brightness and fault logs. At 20 MHz, PWM resolution of roughly 12 bits at 5 kHz is achievable, sufficient for flicker-free dimming. The engineering limitation to note is that the device is the controller, not the driver - a dedicated switching regulator or gate driver stage is still required between the MCU and the LED string power path.
Recommended
Battery-Powered Portable Devices
The MC9S08PA8AVTG works in cost-driven portable and battery-powered products where the S08PA's low-power modes stretch battery life between sleep-heavy duty cycles: the MCU wakes periodically, samples a sensor via the ADC, updates the EEPROM, and returns to stop mode. The 5V operation is convenient for designs powered by three alkaline cells or a boost converter, and the integrated comparator can watch battery voltage against an internal reference to flag low-battery conditions without firmware polling. The 16-TSSOP keeps the controller footprint under 30 mm2 on compact PCBs. The principal design caution is supply-rail management: as the battery discharges, the input must stay within the family's specified 5V operating range, so a low-Iq boost regulator with adequate output regulation is typically used ahead of the MCU.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08PA8AVTG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08PA4AVTGR | MC9S08PA8VTG | MC9S08PT8AVTG |
|---|---|---|---|---|
| Package | 16-TSSOP | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | S08 8-bit, 20 MHz | S08 8-bit, 20 MHz | S08 8-bit, 20 MHz | S08 8-bit, 20 MHz |
| Flash Memory | 8 KB | 4 KB | 8 KB | 8 KB |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V |
| Motor Control Flex Timer | Yes | Yes | Yes | Yes |
Key Differentiators
- Double the program memory at the same footprint (vs MC9S08PA4AVTGR)
- Integrated EEPROM removes external memory (vs Generic 8-bit MCUs without EEPROM)
- Automotive-grade 5V robustness with motor control timer (vs MC9S08PT8AVTG (higher grade) vs PA grade)
Design Notes
Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus a 1 uF bulk capacitor near the local regulator. In automotive 12V environments, add a series ferrite and TVS diode on the KL15/30-derived 5V rail ahead of the regulator; the S08PA's 5V domain is robust, but transients from relay and motor loads on the same harness will couple into the supply. Keep the analog comparator and ADC input traces short and away from the flex timer PWM lines.
Flash and EEPROM endurance are finite: parameter logging written every power cycle can exhaust EEPROM endurance within the product lifetime in high-cycle applications (ignition on/off cycles). Implement wear-leveling by cycling through multiple EEPROM records and verify the endurance figure in the S08PA family datasheet before committing to a write-frequency budget. Also confirm RAM size from the family datasheet - the 8 KB flash figure does not imply RAM capacity.
Estimated: at a typical 5V rail with run-mode current in the low-mA range (per S08 family typical values), a linear regulator dropping 12V to 5V dissipates roughly (12-5)V x I. At 10 mA average this is only 70 mW, but confirm the exact run-mode current in the device datasheet rather than assuming; stop-mode current should be verified separately for battery or always-on duty cycles, and NXP application notes for the S08 family provide measured low-power mode figures.
Compliance Information
RoHS/REACH status not stated in the retrieved web data; verify on the official NXP product page compliance documents before specifying. The S08PA family targets automotive applications per NXP, but AEC-Q100 qualification for this specific ordering code must be confirmed.