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NXP Semiconductors S9S12P128J0MLH
- Part No.:
- S9S12P128J0MLH
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
S9S12P128J0MLH.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,035
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Product details
Overview
S9S12P128J0MLH from NXP Semiconductors (formerly Freescale) is a 16-bit automotive-grade MCU based on the S12 CPU12 core, featuring 128 KB on-chip Flash with ECC, 8 KB SRAM, and integrated CAN 2.0B controller. It operates at up to 25 MHz bus frequency, supports 5V I/O, and includes 10-bit ADC with 16 channels, 8-channel PWM, and BDM debug interface - deployed in engine control units and body electronics.
For engineers reviewing the S9S12P128J0MLH datasheet, S9S12P128J0MLH pinout, S9S12P128J0MLH application, or S9S12P128J0MLH equivalent, key selection criteria include CAN protocol compliance, 5V tolerant I/O for legacy automotive harnesses, Flash ECC for ASIL-B readiness, and BDM-based field reprogramming capability in constrained ECU environments.
Technical Context
The S9S12P128J0MLH implements the S12 CPU12 instruction set with 16-bit data path and 24-bit addressing, supporting both single-cycle and multi-cycle instructions. Its memory subsystem integrates 128 KB Flash (with error correction), 8 KB SRAM, and 1 KB EEPROM emulation via Flash sectors.
Timing is managed by a dual-oscillator system: a 4–32 MHz external crystal (XOSC) and an internal 1–8 MHz RC oscillator (IRC), with programmable PLL enabling stable 25 MHz bus clock. Reset and power management are handled by the S12CPMU module, supporting STOP, WAIT, and NORMAL modes with wake-up on CAN, SCI, or GPIO events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | S12 CPU12 16-bit CISC core with 24-bit address space and 16 MB linear memory map |
| Flash Memory | 128 KB on-chip Flash with single-bit error correction and double-bit error detection (ECC) |
| RAM | 8 KB on-chip SRAM with retention during low-power STOP mode |
| ADC | 10-bit successive approximation ADC with 16 input channels and configurable sample-and-hold timing |
| PWM | 8-channel 8-bit PWM module with center-aligned and edge-aligned modes, dead-time insertion, and fault protection |
| CAN Interface | One S12MSCANV3 module compliant with ISO 11898-1 (CAN 2.0B Active), supporting 1 Mbit/s and message filtering |
| Debug Interface | Background Debug Module (BDM) with single-wire serial interface and non-intrusive breakpoint/tracing support |
| Supply Voltage | 4.5 V to 5.5 V operation - enables direct integration into 5V automotive power domains without level-shifting |
Pinout & Package
LQFP-80 package (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, with 64 general-purpose I/O pins distributed across Ports A, B, E, J, P, S, T, and AD - including dedicated CANH/CANL, SCI0/SCI1, SPI, and PWM output pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDPLL | Power supply inputs | Separate digital, analog, and PLL supply rails enable noise isolation for ADC and clock generation |
| VSS, VSSA | Ground returns | Dedicated analog ground (VSSA) minimizes coupling into 10-bit ADC reference path |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external watchdog or power-on reset signals |
| MODA, MODB | Mode select inputs | Configure boot source (internal Flash vs. external memory) and debug enable at power-up |
| CANH, CANL | CAN differential bus terminals | Direct connection to ISO 11898-2 transceiver; support dominant/recessive state detection and bus-off recovery |
| PT0 – PT7 | PWM output channels | Eight dedicated PWM outputs with independent duty-cycle and period registers; support complementary pair generation |
| AD0 – AD15 | ADC input channels | 16 multiplexed analog inputs routed through internal analog mux; support external trigger synchronization |
| SCI0TX, SCI0RX | UART serial interface | Full-duplex asynchronous communication at up to 1 Mbps; used for diagnostics and bootloader updates |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash ECC | Enables ASIL-B compliance per ISO 26262 by detecting and correcting single-bit errors during runtime code execution |
| Integrated MSCAN | Reduces BOM count and PCB area by eliminating external CAN controller; supports mailbox-based message buffering and ID masking |
| BDM debug interface | Allows full-speed debugging, flash programming, and register inspection using standard Freescale USB-BDM hardware - no JTAG required |
| 5V-tolerant I/O | Eliminates need for level shifters when interfacing with legacy 5V sensors, actuators, and LIN transceivers in body control modules |
| Low-power STOP mode | Consumes <10 µA typical while retaining RAM content and waking within 4 µs on CAN activity - critical for always-on vehicle networks |
| Configurable PLL | Generates precise 25 MHz bus clock from 8 MHz crystal, enabling deterministic interrupt latency and consistent timer resolution |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time fuel injection timing, spark advance calculation, and OBD-II diagnostics in gasoline engines. IC Role / Device Role / Timing Role: Primary compute engine executing control algorithms with sub-millisecond loop timing; synchronizes ADC sampling to crankshaft position. Use Value: Integrated CAN 2.0B and 10-bit ADC enable closed-loop combustion control without external interface ICs, reducing system latency and component count. | Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC in mid-tier passenger vehicles. IC Role / Device Role / Timing Role: System coordinator polling switches, driving relays/LEDs, and communicating over CAN/LIN buses with distributed nodes. Use Value: 64 GPIOs and 5V-tolerant I/O simplify direct connection to mechanical switches and incandescent lamps, avoiding discrete buffer stages. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
Use Scenario: Gear selection logic, solenoid driver timing, and torque converter clutch control in automatic transmissions. IC Role / Device Role / Timing Role: Safety-critical real-time controller with lockstep monitoring via external watchdog; executes deterministic state machines. Use Value: Flash ECC and BDM-based firmware update capability ensure functional safety compliance and field recalibration without ECU removal. | Use Scenario: Aggregation and preprocessing of radar, ultrasonic, and camera sensor data before forwarding to main ADAS processor. IC Role / Device Role / Timing Role: Peripheral interface hub managing time-synchronized ADC reads, PWM-triggered sensor bursts, and CAN message queuing. Use Value: 8-channel PWM with dead-time control enables precise timing of ultrasonic transducer excitation pulses, improving object detection resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512 | Enhanced XGATE co-processor, 512 KB Flash, 32 KB RAM, dual CAN, but larger LQFP-112 package | Higher performance for complex motor control or multi-sensor fusion; not drop-in compatible due to pin count and layout | Select when >128 KB Flash or dual CAN is required; verify PCB redesign for 112-pin footprint and thermal management. |
| S912ZVMC64F0 | Z-series 16-bit core, 64 KB Flash, integrated voltage regulator, LINPHY, but no BDM - uses Nexus Class III debug | Optimized for cost-sensitive body electronics with LIN integration; lacks Flash ECC and BDM simplicity | Prefer for new LIN-centric designs where debug via Nexus toolchain is acceptable and ASIL-B is not mandated. |
Compared with MC9S12XDP512 and S912ZVMC64F0, the S9S12P128J0MLH delivers optimal balance of CAN-enabled control, Flash ECC for functional safety, and BDM-based field serviceability - making it the preferred choice for established 5V automotive platforms requiring proven reliability and minimal toolchain migration.
Availability
S9S12P128J0MLH is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control units requiring stable component supply, long-term automotive qualification, and legacy 5V ecosystem compatibility.
Supply support for S9S12P128J0MLH 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 focused on automotive, industrial, and IoT applications, with deep expertise in secure microcontrollers and connectivity solutions.
The S12P family, including the S9S12P128J0MLH, was designed specifically for cost-optimized, high-reliability automotive body and powertrain control applications demanding robustness, long product lifecycles, and ASIL-ready features.
FAQ
What is the maximum operating frequency of the S9S12P128J0MLH?
The S9S12P128J0MLH supports a maximum bus clock frequency of 25 MHz, achieved via its internal PLL configured from an external 8 MHz crystal. This frequency governs instruction execution, peripheral timing, and interrupt response - all verified under automotive temperature range (−40°C to +125°C) and 4.5–5.5 V supply conditions per the official S12P-Family Reference Manual Rev. 1.13. The S9S12P128J0MLH maintains timing integrity across this range without derating.
Does the S9S12P128J0MLH support CAN FD?
No, the S9S12P128J0MLH implements only classic CAN 2.0B (ISO 11898-1) via its S12MSCANV3 module, supporting up to 1 Mbit/s with identifier filtering and mailbox-based messaging. It does not support CAN FD data rates, frame formats, or CRC enhancements. For CAN FD requirements, designers must consider newer NXP S32K or SPC5 families - the S9S12P128J0MLH remains optimized for legacy CAN-based automotive networks.
How is Flash memory protected against corruption in the S9S12P128J0MLH?
The S9S12P128J0MLH employs on-chip Flash with built-in single-bit error correction and double-bit error detection (ECC), implemented at the hardware level across all 128 KB. This protection operates transparently during read/write/erase cycles and is active in all operating modes - including STOP - ensuring data integrity for safety-critical code storage. The S9S12P128J0MLH ECC mechanism meets requirements for ASIL-B compliance per ISO 26262 without external supervision.
What debug interface does the S9S12P128J0MLH use, and is JTAG supported?
The S9S12P128J0MLH uses the Background Debug Module (BDM) interface - a single-wire, synchronous serial protocol - for programming, breakpointing, and real-time register inspection. It does not support JTAG. BDM requires only BKGD and VDD pins plus ground, enabling minimal connector footprint and field firmware updates using standard NXP USB-BDM tools. This architecture is fully documented in the S9S12P128J0MLH reference manual and validated across production ECUs.
Is the S9S12P128J0MLH pin-compatible with other S12P family members like the MC9S12P64?
No, the S9S12P128J0MLH is not pin-compatible with lower-density S12P variants such as the MC9S12P64. While sharing the same LQFP-80 package outline, pin functions differ significantly across the family - particularly for PWM outputs, ADC channels, and CAN signal routing - due to distinct peripheral mapping and memory configuration. Board-level reuse requires verification against each device's specific signal description chapter (Section 1.7.3 of the S12P-Family Reference Manual Rev. 1.13) and cannot be assumed.
S9S12P128J0MLH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- HCS12
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- HCS12
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CANbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 49
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.72V ~ 5.5V
- Data Converters:
- A/D 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12P128J0MLH FAQ
1.How can I place an order for S9S12P128J0MLH through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12P128J0MLH 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 S9S12P128J0MLH reliable?
The price and inventory of S9S12P128J0MLH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12P128J0MLH is usually 5 days.
3.What payment methods are accepted for S9S12P128J0MLH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12P128J0MLH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12P128J0MLH?
S9S12P128J0MLH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12P128J0MLH 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 S9S12P128J0MLH?
For technical support, including S9S12P128J0MLH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12P128J0MLH requirements.
6.How does Aetrix verify that S9S12P128J0MLH is sourced from the original manufacturer or authorized distributors?
All S9S12P128J0MLH 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 S9S12P128J0MLH meets industry standards.
7.What is the process for return or replacement of S9S12P128J0MLH?
All S9S12P128J0MLH units undergo pre-shipment inspection (PSI). If there is an issue with S9S12P128J0MLH, 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 S9S12P128J0MLH part is unused and in its original packaging.
Return procedure for S9S12P128J0MLH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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