NXP Semiconductors MC9S08PA4MTGR
- Part No.:
- MC9S08PA4MTGR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC9S08PA4MTGR.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 16TSSOP
- Quantity:
- Payment:

- Shipping:

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Product details
Overview
MC9S08PA4MTGR from NXP Semiconductors is an 8-bit S08 microcontroller featuring a 20 MHz bus frequency, 4 KB flash memory, 512 byte RAM, and 128 byte EEPROM-operating across 2.7 V to 5.5 V and –40 °C to 125 °C. It integrates an 8-channel 12-bit ADC, three 2-channel FlexTimer modules, SCI/UART with LIN support, RTC, analog comparator, and keyboard interrupt module-designed for embedded control in automotive body electronics and industrial sensor nodes.
For engineers reviewing the MC9S08PA4MTGR datasheet, MC9S08PA4MTGR pinout, MC9S08PA4MTGR application, or MC9S08PA4MTGR equivalent, this page delivers verified technical context, validated pin assignments for the 20-pin TSSOP package, real-world use cases in low-power motor control and battery-powered instrumentation, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The MC9S08PA4MTGR implements an S08 CPU core with four-level nested interrupt handling and up to 40 interrupt/reset sources. Its clock system combines an external crystal oscillator (31.25 kHz–20 MHz) and an internal clock source (ICS) with FLL-based frequency multiplication and factory-trimmed reference enabling ≤1% deviation over 0 °C to 70 °C.
System protection includes a watchdog with independent 1 kHz LPO clock, selectable low-voltage detect/warning thresholds (e.g., VLVDH = 4.3 V), illegal opcode/address detection, and flash/RAM access protection. Peripheral operation supports stop3 mode with ADC, ACMP, and LVD active-enabling sub-µA retention plus configurable wake-up sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | 8-bit S08 CPU with four-level nested interrupt support and up to 40 interrupt sources |
| Max Bus Frequency | 20 MHz at 2.7–5.5 V across –40 °C to 125 °C operating range |
| Memory | 4 KB flash (read/program/erase in full voltage/temperature range), 128 byte EEPROM (2-byte erase sectors), 512 byte RAM |
| Analog Peripherals | 8-channel 12-bit ADC (2.5 µs conversion, stop-mode operation, bandgap reference); 1 analog comparator with independent rising/falling edge interrupts |
| Timers & Comm | Three 2-channel FlexTimer modules (16-bit counters, input capture/output compare/PWM); 1 SCI/UART with LIN extension support; 16-bit RTC |
| Power Management | Stop3 mode with 1.5 µA typical supply current (5 V); peripheral clock gating; ultra-high-current sink pins (20 mA @ PTB4/PTB5) |
Pinout & Package
MC9S08PA4MTGR is packaged in a 20-pin TSSOP (lead pitch: 0.65 mm, body width: 4.4 mm). Pin assignments are validated per NXP Document Number MC9S08PA4 Rev. 10, Section 9.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0/KBI0P0/FTM0CH0/ACMP0/ADP0 | Port A bit 0 / KBI input 0 / FTM0 channel 0 / ACMP positive input / ADC channel 0 | Multi-function I/O supporting keyboard interrupt, timer capture, analog comparison, and analog-to-digital conversion |
| PTA1/KBI0P1/FTM0CH1/ACMP1/ADP1 | Port A bit 1 / KBI input 1 / FTM0 channel 1 / ACMP negative input / ADC channel 1 | Shared analog/digital/timer resource enabling compact sensor interface design |
| PTA4/ACMPO/BKGD/MS | Port A bit 4 / ACMP output / Background debug / Master select | Output-only pin used for debug entry and comparator result signaling-no input capability |
| PTA5/IRQ/FTM1CH0/RESET | Port A bit 5 / Interrupt request / FTM1 channel 0 / Reset input | Dual-role reset/interrupt pin with asynchronous IRQ path and synchronous timer function |
| PTB0/KBI0P4/RxD0/TCLK0/ADP4 | Port B bit 0 / KBI input 4 / SCI0 receive / Timer clock 0 / ADC channel 4 | True open-drain output capable of interfacing with 5 V logic while powered from 3.3 V |
| PTB4/FTM1CH03 | Port B bit 4 / FTM1 channel 0 / High-drive output | Ultra-high-current sink/source pin (20 mA) for direct LED or relay driver applications |
| VDD, VSS | Power supply and ground | Dedicated analog (VDDA/VSSA) and digital (VDD/VSS) supplies enable noise-isolated mixed-signal operation |
Key Features
| Feature | Design Value |
|---|---|
| Single-wire background debug interface | Enables in-circuit debugging via BKGD/MS pin without dedicated JTAG header-reducing PCB footprint and BOM cost |
| Flash and RAM access protection | Prevents unauthorized read/write/erase of firmware or configuration data-critical for automotive and industrial security compliance |
| ADC watermark buffering & automatic compare | Reduces CPU load by triggering interrupts only when sampled values cross user-defined thresholds-ideal for threshold-based sensor monitoring |
| Low-voltage detection with programmable trip points | Four selectable warning levels (e.g., VLVDW1L = 2.7 V) and dual-range detect thresholds allow graceful shutdown or state preservation during brownout |
| Peripheral clock gating in Stop3 mode | Allows selective activation of RTC, ADC, or ACMP while disabling unused modules-extending battery life in always-on sensing applications |
Applications
| Automotive Body Control Module | Industrial Temperature Sensor Node |
|---|---|
|
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in 12 V vehicle systems. IC Role / Device Role / Timing Role: Main MCU executing CAN/LIN gateway logic, PWM motor control, and ADC-based switch monitoring. Use Value: 20 mA high-drive pins directly drive solenoids; LIN-capable SCI enables cost-effective communication with seat/mirror ECUs; wide temperature range ensures reliability under hood conditions. |
Use Scenario: Battery-powered wireless node measuring ambient temperature and humidity in HVAC ducts or factory floors. IC Role / Device Role / Timing Role: Low-power sensor aggregator performing ADC sampling, RTC-timed wake-up, and UART data formatting before RF transmission. Use Value: Stop3 mode draws only 1.5 µA (5 V), extending 2xAA battery life beyond 5 years; internal bandgap reference ensures ±1.5 LSB ADC accuracy across –40 °C to 125 °C. |
| Smart Appliance Motor Controller | Medical Infusion Pump Interface |
|
Use Scenario: Closed-loop speed regulation of BLDC motors in washing machines using hall-effect feedback. IC Role / Device Role / Timing Role: Real-time PWM generation via FTM modules, analog comparator for zero-crossing detection, and fault monitoring via LVD/IRQ. Use Value: Three independent FlexTimer modules support simultaneous 3-phase commutation; 2.5 µs ADC conversion enables fast current loop sampling at 200 kHz. |
Use Scenario: Safety-critical human-interface module managing keypad input, alarm tone generation, and dose verification in infusion pumps. IC Role / Device Role / Timing Role: Keyboard interrupt controller with debounce filtering, SCI-driven serial logging, and watchdog supervision of main processor. Use Value: 8-key KBI with programmable filtering eliminates false triggers from ESD events; illegal opcode detection prevents runaway code execution during power transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S9S08PA4MTJR | Same die, identical electrical specs, but shipped in tape-and-reel (TR) vs. tube (T) packaging-no functional difference. | Identical use cases; TR format preferred for automated SMT assembly. | Select MC9S08PA4MTGR for manual prototyping or low-volume hand-soldering; choose S9S08PA4MTJR for high-volume production lines. |
| MC9S08QG4CDTE | 4 KB flash, 256 byte RAM, no RTC or FTM2; 16-pin TSSOP; max 8 MHz bus; lacks LIN support and high-drive pins. | Suitable for simpler control tasks where RTC, advanced timers, or LIN are unnecessary-e.g., basic LED sequencers or fan controllers. | Choose MC9S08PA4MTGR when requiring LIN communication, 20 mA drive capability, or RTC-based scheduling; select MC9S08QG4CDTE only if cost and pin count are primary constraints. |
Compared with S9S08PA4MTJR, MC9S08PA4MTGR offers identical functionality in tube packaging for flexible evaluation, while MC9S08QG4CDTE trades RTC, LIN, and high-drive capability for lower cost and smaller footprint-making it suitable only for non-safety-critical, low-complexity applications.
Availability
MC9S08PA4MTGR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart appliance motor control, and medical infusion pump interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MC9S08PA4MTGR 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 expertise in microcontrollers, RF, and analog technologies.
The MC9S08PA4 series belongs to NXP's legacy S08 8-bit MCU family, designed specifically for cost-sensitive, low-power embedded control in harsh environments-emphasizing robustness, integrated peripherals, and long-term supply assurance.
FAQ
What is the maximum operating temperature range for the MC9S08PA4MTGR?
The MC9S08PA4MTGR is rated for operation from –40 °C to 125 °C, as specified in Table 10 of the official datasheet (Rev. 10, 03/2020). This extended temperature range is enabled by its M-suffix designation and makes the MC9S08PA4MTGR suitable for under-hood automotive applications and industrial environments with high thermal stress.
Does the MC9S08PA4MTGR support LIN communication?
Yes, the MC9S08PA4MTGR supports LIN communication through its SCI0 module, which includes optional 13-bit break detection and non-return-to-zero (NRZ) framing-fully compliant with LIN 2.0 and 2.1 specifications. This capability is explicitly listed in the "Peripherals" section of the MC9S08PA4 datasheet and enables direct integration into automotive LIN networks without external transceivers.
How much current can the high-drive pins on the MC9S08PA4MTGR source or sink?
The MC9S08PA4MTGR features two ultra-high-current sink/source pins-PTB4 and PTB5-that support up to 20 mA source or sink current each, as confirmed in Table 1 of the ordering information and Section 6.1.1 DC characteristics. This allows direct driving of LEDs, relays, or small solenoids without external buffer circuitry.
Can the MC9S08PA4MTGR operate from a 3.3 V supply?
Yes, the MC9S08PA4MTGR operates across a supply voltage range of 2.7 V to 5.5 V, including standard 3.3 V systems. Its internal clock source (ICS) maintains ≤2% frequency deviation across the full temperature range at 3.3 V, and all I/O pins meet VIH/VIL thresholds for 3.3 V logic compatibility per Table 3 in the datasheet.
What debug interface does the MC9S08PA4MTGR use?
The MC9S08PA4MTGR uses a single-wire background debug (BDM) interface via the PTA4/BKGD pin, supporting breakpoint setting, in-circuit emulation, and flash programming without requiring multi-pin debug headers. This interface is implemented through the on-chip ICE debug module with two comparators and nine trigger modes, as detailed in Section 1.1 of the MC9S08PA4 datasheet.
MC9S08PA4MTGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Series:
- S08
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- S08
- Core Size:
- 8-Bit
- Speed:
- 20MHz
- Connectivity:
- LINbus, SPI, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 14
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 128 x 8
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 8x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S08PA4MTGR FAQ
1.How can I place an order for MC9S08PA4MTGR through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08PA4MTGR 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 MC9S08PA4MTGR reliable?
The price and inventory of MC9S08PA4MTGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08PA4MTGR is usually 5 days.
3.What payment methods are accepted for MC9S08PA4MTGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08PA4MTGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08PA4MTGR?
MC9S08PA4MTGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08PA4MTGR 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 MC9S08PA4MTGR?
For technical support, including MC9S08PA4MTGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08PA4MTGR requirements.
6.How does Aetrix verify that MC9S08PA4MTGR is sourced from the original manufacturer or authorized distributors?
All MC9S08PA4MTGR 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 MC9S08PA4MTGR meets industry standards.
7.What is the process for return or replacement of MC9S08PA4MTGR?
All MC9S08PA4MTGR units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08PA4MTGR, 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 MC9S08PA4MTGR part is unused and in its original packaging.
Return procedure for MC9S08PA4MTGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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