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NXP Semiconductors MC9S08PA8VTJ
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- Part No.:
- MC9S08PA8VTJ
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC9S08PA8VTJ.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,613
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Product details
Overview
MC9S08PA8VTJ from NXP Semiconductors is an 8-bit S08 microcontroller with 8 KB flash, 2 KB RAM, and 256 B EEPROM, operating at up to 20 MHz across –40 °C to 105 °C. It integrates a 12-channel 12-bit ADC, dual SCI (LIN-capable), I²C, SPI, two FTM modules, RTC, and analog comparator-designed for automotive body control modules requiring robust low-power operation and mixed-signal integration.
For engineers reviewing the MC9S08PA8VTJ datasheet, MC9S08PA8VTJ pinout, MC9S08PA8VTJ application, or MC9S08PA8VTJ equivalent, this page delivers verified technical context, validated pin assignments for the 20-pin TSSOP package, real-world use cases in vehicle lighting and sensor interface systems, and two confirmed alternative parts with documented functional and peripheral differences.
Technical Context
The MC9S08PA8VTJ implements an S08 CPU core with on-chip memory protection, supporting up to four-level nested interrupts and 40 interrupt/reset sources. Its clock system combines an external crystal oscillator (4–20 MHz) and an internal frequency-locked-loop (FLL) with factory-trimmed reference enabling ≤2% deviation over full temperature range.
Peripheral integration includes two flex timer modules (6-channel + 2-channel), one 12-bit ADC with stop-mode operation and hardware trigger, and dual SCI interfaces with LIN extension support. System protection features include independent watchdog, programmable low-voltage detection with four warning levels, and illegal opcode/address reset handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | 8-bit S08 CPU, up to 20 MHz bus frequency at 2.7–5.5 V supply |
| Memory | 8 KB flash (read/program/erase in run mode), 2 KB RAM, 256 B EEPROM with 2-byte erase sector |
| ADC | 12-channel, 12-bit resolution, 2.5 µs conversion time, internal bandgap reference, stop-mode operation |
| Timers | Two FTM modules (6-channel + 2-channel), 16-bit counter, input capture/output compare/PWM modes; one 8-bit modulo timer |
| Communication | Dual SCI (LIN-capable), one I²C (400 kbps, SMBus/PMBus), one SPI (master/slave, full-duplex or single-wire) |
| Package | 20-pin TSSOP, thermal resistance RθJA = 116 °C/W (single-layer board) |
| Operating Temp | –40 °C to +105 °C (V-grade), qualified per automotive AEC-Q100 stress test requirements |
Pinout & Package
MC9S08PA8VTJ is housed in a 20-pin Thin Shrink Small Outline Package (TSSOP) with 0.65 mm pitch, JEDEC MO-153 compliant, suitable for automated surface-mount assembly and automotive under-hood applications requiring thermal reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0/KBI0P0/FTM0CH0/ACMP0/ADP0 | Multi-function GPIO | Configurable as keyboard interrupt input, FTM channel 0 output, analog comparator input, or ADC channel 0 input |
| PTA1/KBI0P1/FTM0CH1/ACMP1/ADP1 | Multi-function GPIO | Supports keyboard interrupt, FTM channel 1, comparator input, or ADC channel 1-enabling shared signal routing in space-constrained designs |
| PTA2/KBI0P2/RxD0/SDA1 | True open-drain I/O | Operates as true open-drain when used as output; supports I²C bus (SDA1) or SCI receive (RxD0) without external pull-up dependency |
| PTA3/KBI0P3/TxD0/SCL1 | True open-drain I/O | True open-drain output for I²C clock (SCL1) or SCI transmit (TxD0); enables bidirectional bus sharing and level translation |
| PTA4/ACMPO/BKGD/MS | Output-only debug pin | Single-wire background debug (BKGD) interface; output-only function prevents contention during in-circuit debugging sessions |
| PTA5/IRQ/TCLK0/RESET | Multi-function input | Serves as external interrupt request, timer clock input, or active-low reset-configured via internal pull-up and reset vector mapping |
| PTB0/KBI0P4/RxD0/ADP4 | Shared peripheral pin | Combines keyboard interrupt, SCI0 receive, and ADC channel 4-reducing pin count while maintaining sensor interface flexibility |
| PTB1/KBI0P5/TxD0/ADP5 | Shared peripheral pin | Provides SCI0 transmit, keyboard interrupt, and ADC channel 5-supporting UART-based diagnostics and analog sensing on same port |
| VDD, VSS | Power supply pair | Dual power pins (pins 1 and 20) ensure stable core and I/O rail delivery; decoupling required within 10 mm of VDD/VSS |
| EXTAL/XTAL | Crystal oscillator terminals | Connects to 4–20 MHz crystal or ceramic resonator; internal load capacitors eliminate need for external caps in most configurations |
Key Features
| Feature | Design Value |
|---|---|
| Flash & RAM access protection | Prevents unauthorized read/write/erase via security byte configuration-critical for firmware IP protection in automotive ECUs |
| Stop3 low-power mode | Consumes only 1.3 µA (typical) with 1 kHz LPO clock active, enabling wake-on-comparator or RTC alarm in battery-backed systems |
| Programmable low-voltage warning | Four selectable falling-threshold levels (2.62–4.7 V) allow precise brown-out response tuning for 12 V vehicle electrical systems |
| On-chip ICE debug module | Two comparators and nine trigger modes enable non-intrusive real-time trace and breakpoint debugging without external JTAG hardware |
| High-drive GPIO capability | Four pins (PTB4, PTB5, PTD0, PTD1) sink/source up to 20 mA-directly drive LEDs or small relays without external drivers |
Applications
| Automotive Lighting Control | Body Control Module (BCM) |
|---|---|
Use Scenario: PWM-controlled LED headlamp dimming and turn signal sequencing in compact vehicle platforms. IC Role / Device Role / Timing Role: MC9S08PA8VTJ acts as primary timing and PWM generator using its 6-channel FTM module, synchronizing multiple LED strings with precise duty-cycle control. Use Value: Eliminates external PWM controllers and reduces BOM cost by integrating high-current drive capability (20 mA per pin) directly into the MCU. | Use Scenario: Centralized monitoring of door lock status, window position, and interior lighting via discrete sensors and switches. IC Role / Device Role / Timing Role: MC9S08PA8VTJ serves as the main BCM controller, executing real-time polling via KBI module and managing LIN communication to remote nodes. Use Value: Leverages dual LIN-capable SCI interfaces and 12-bit ADC to condition analog sensor signals (e.g., potentiometer-based window position) without external signal conditioning. |
| Industrial Sensor Interface | Smart HVAC Actuator |
Use Scenario: Analog temperature/humidity sensing and digital valve control in building automation field devices. IC Role / Device Role / Timing Role: MC9S08PA8VTJ performs simultaneous 12-bit ADC sampling and SPI-driven actuator command transmission to motor driver ICs. Use Value: Achieves <2.5 µs ADC conversion time and supports stop-mode operation-enabling ultra-low-power periodic wake-up for battery-operated wireless sensors. | Use Scenario: Position feedback and closed-loop control of damper actuators in commercial HVAC systems. IC Role / Device Role / Timing Role: MC9S08PA8VTJ executes PID control loop using RTC-timed interrupts and processes analog feedback from potentiometric position sensors via ADC. Use Value: Integrates RTC, 12-bit ADC, and dual SCI with LIN support-replacing discrete timing, conversion, and communication components in cost-sensitive embedded HVAC nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08PA16VTJ | 16 KB flash, identical peripherals and pinout; same 20-pin TSSOP package and temperature grade | Supports larger firmware images and more complex control algorithms without layout change | Select when future firmware expansion or additional diagnostic logging is anticipated |
| S9S08PA4VTJ | 4 KB flash, 1 KB RAM, 128 B EEPROM; reduced ADC channels (6), single SCI, no RTC | Targeted at simpler functions like basic switch monitoring or single-output PWM control | Choose for cost-sensitive, low-complexity applications where memory and peripheral headroom are not required |
Compared with MC9S08PA8VTJ, MC9S08PA16VTJ offers double flash capacity with zero PCB impact, while S9S08PA4VTJ reduces cost and power but sacrifices RTC, second SCI, and half the ADC channels-making it suitable only for minimal-feature implementations.
Availability
MC9S08PA8VTJ is available at Aetrix Electronics and suitable for automotive lighting control, body control modules, industrial sensor interfaces, and smart HVAC actuator designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC9S08PA8VTJ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in microcontrollers and automotive-grade qualification.
The MC9S08PA series was designed specifically for cost-optimized, thermally robust automotive body electronics-emphasizing integrated analog peripherals, LIN compatibility, and extended-temperature flash reliability.
FAQ
What is the maximum operating frequency and voltage range for the MC9S08PA8VTJ?
The MC9S08PA8VTJ operates at up to 20 MHz bus frequency across a supply voltage range of 2.7 V to 5.5 V, fully specified over the industrial temperature range of –40 °C to +105 °C. This voltage and frequency envelope ensures reliable performance in automotive 12 V systems with wide battery fluctuation and under-hood thermal conditions. The internal FLL and oscillator circuitry maintain timing accuracy without external frequency multipliers.
Does the MC9S08PA8VTJ support in-circuit debugging, and what interface does it use?
Yes, the MC9S08PA8VTJ supports single-wire background debug (BDM) via the BKGD pin (PTA4), enabling full in-circuit emulation including breakpoints, register inspection, and flash programming. The on-chip ICE debug module provides two comparators and nine trigger modes, allowing non-intrusive real-time trace without requiring dedicated JTAG pins or external debug probes-reducing PCB footprint and development tooling cost.
How many analog-to-digital converter (ADC) channels does the MC9S08PA8VTJ have, and what is its resolution?
The MC9S08PA8VTJ includes a 12-channel, 12-bit successive-approximation ADC with 2.5 µs conversion time, internal bandgap reference, and optional hardware triggering. It supports operation in stop3 mode, making it suitable for low-power sensor acquisition. Channel selection, sample time, and data buffering-including watermark flags-are fully configurable via dedicated registers, enabling flexible integration in mixed-signal automotive and industrial applications.
What package type and pin count does the MC9S08PA8VTJ use, and is it RoHS compliant?
The MC9S08PA8VTJ is supplied in a 20-pin Thin Shrink Small Outline Package (TSSOP) with 0.65 mm lead pitch, compliant with JEDEC MO-153 standards. It is RoHS compliant and qualified for lead-free reflow per IPC/JEDEC J-STD-020. Thermal resistance is specified at RθJA = 116 °C/W on single-layer boards, supporting reliable operation in compact automotive modules with limited heatsinking.
Can the MC9S08PA8VTJ operate in low-power modes, and what is the lowest current consumption achievable?
Yes, the MC9S08PA8VTJ supports multiple low-power modes, with Stop3 mode achieving typical current consumption of 1.3 µA at 5 V (1.3 µA at 3 V) while retaining RAM content and enabling wake-up via RTC alarm, analog comparator output, or external interrupt. Peripheral clocks can be selectively disabled via the PMC module, and the 1 kHz low-power oscillator remains active-making it ideal for battery-backed automotive modules requiring infrequent wake-up events.
MC9S08PA8VTJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- S08
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- S08
- Core Size:
- 8-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SPI, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 18
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 256 x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S08PA8VTJ FAQ
1.How can I place an order for MC9S08PA8VTJ through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08PA8VTJ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC9S08PA8VTJ reliable?
The price and inventory of MC9S08PA8VTJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08PA8VTJ is usually 5 days.
3.What payment methods are accepted for MC9S08PA8VTJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08PA8VTJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08PA8VTJ?
MC9S08PA8VTJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08PA8VTJ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC9S08PA8VTJ?
For technical support, including MC9S08PA8VTJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08PA8VTJ requirements.
6.How does Aetrix verify that MC9S08PA8VTJ is sourced from the original manufacturer or authorized distributors?
All MC9S08PA8VTJ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC9S08PA8VTJ meets industry standards.
7.What is the process for return or replacement of MC9S08PA8VTJ?
All MC9S08PA8VTJ units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08PA8VTJ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC9S08PA8VTJ part is unused and in its original packaging.
Return procedure for MC9S08PA8VTJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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