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NXP Semiconductors S9S12XS256J0MALR
- Part No.:
- S9S12XS256J0MALR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S9S12XS256J0MALR.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,311
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Product details
Overview
S9S12XS256J0MALR from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X-based microcontroller featuring 256 KB on-chip flash memory, 12 KB RAM, and a 50 MHz CPU clock. It integrates dual CAN 2.0B controllers, 12-bit ADC with 16 channels, 8-channel PWM, and background debug module (BDM) for in-circuit debugging. It targets automotive body control modules requiring robust real-time I/O and CAN networking.
For engineers reviewing the S9S12XS256J0MALR datasheet, S9S12XS256J0MALR pinout, S9S12XS256J0MALR application, or S9S12XS256J0MALR equivalent, key selection criteria include its 80-pin LQFP package, 5V-tolerant I/O, integrated voltage regulator (3.3 V core), CAN FD readiness via software configuration, and support for XGATE co-processor offloading of time-critical tasks.
Technical Context
The S9S12XS256J0MALR implements the S12X CPU core with enhanced addressing modes and 16-bit data path, paired with an XGATE RISC co-processor that handles peripheral interrupts independently to reduce main CPU load. Its memory architecture supports banked flash with EEPROM emulation and configurable wait states for external bus interfacing.
It features dual independent MSCAN modules supporting CAN 2.0A/B protocols at up to 1 Mbps, with message buffering, ID filtering, and loopback self-test modes. The ADC12B16C module provides 12-bit resolution with programmable sample time, hardware-triggered conversions, and built-in temperature sensor interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS12X 16-bit core with XGATE RISC co-processor for parallel peripheral handling |
| Flash Memory | 256 KB on-chip flash with EEPROM emulation and 100K write/erase cycles |
| RAM | 12 KB on-chip RAM with retention in stop mode |
| Clock Speed | 50 MHz maximum CPU frequency; supports internal PLL and external crystal (1–32 MHz) |
| I/O Pins | 64 general-purpose I/O pins with programmable pull-up/down, slew rate control, and interrupt capability |
| CAN Interfaces | Dual MSCAN modules compliant with ISO 11898-1, supporting 1 Mbps baud rate and message objects |
| ADC | 12-bit ADC with 16 input channels, 8 µs conversion time, and hardware trigger support |
| Package | 80-pin LQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3 |
Pinout & Package
80-pin Low-Profile Quad Flat Package (LQFP) with exposed thermal pad; pin-compatible with MC9S12XS256 derivatives in same footprint. Thermal resistance θJA = 42 °C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDF | Power supply inputs | VDD (5 V digital), VDDA (5 V analog), VDDF (3.3 V core regulator output); separate domains enable noise isolation |
| VSS, VSSA, VSSF | Ground returns | Dedicated analog/digital/core ground pins minimize coupling and improve ADC accuracy |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts 5 V logic; debounced by internal circuitry |
| XTAL, EXTAL | Crystal oscillator terminals | Supports fundamental-mode quartz crystals (1–32 MHz); internal load capacitors configurable via register |
| CAN0TX, CAN0RX | CAN controller channel 0 I/O | Differential transmit/receive signals routed to external transceiver; 5 V tolerant |
| CAN1TX, CAN1RX | CAN controller channel 1 I/O | Independent second CAN interface; enables redundant or multi-bus automotive networks |
| AD0[0–15] | Analog input channels | 16 dedicated ADC inputs; multiplexed with port pins; support single-ended and differential modes |
| PT0–PT7, PB0–PB7, etc. | Programmable I/O ports | 8-port GPIO structure (Ports A, B, E, K, T, S, M, P, H, J); each with direction, data, pull, and interrupt registers |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Offloads CAN, ADC, and timer interrupts from main CPU, enabling deterministic real-time response under 1 µs latency |
| Dual MSCAN modules | Two independent CAN 2.0B controllers with 16 message buffers each, supporting priority arbitration and error confinement |
| On-chip voltage regulator | Integrated 3.3 V regulator (S12VREGL3V3) powers core logic; eliminates need for external LDO in most automotive applications |
| Background Debug Module (BDM) | Single-wire debug interface compliant with standard BDM protocol; supports flash programming and real-time variable monitoring |
| Security and protection | Flash security byte prevents unauthorized read-out; COP watchdog with windowed timeout and reset-on-failure behavior |
| Temperature sensor interface | Built-in bandgap temperature sensor connected to ADC channel AD0[17]; calibrated for ±3°C accuracy across –40°C to 125°C |
Applications
| Body Control Module (BCM) | Electronic Power Steering (EPS) |
|---|---|
Use Scenario: Centralized vehicle subsystem managing door locks, lighting, wipers, and HVAC actuators via LIN and CAN. IC Role / Device Role / Timing Role: Main system controller executing real-time state machines, processing switch inputs, driving relays and LEDs, and communicating over dual CAN buses. Use Value: Integrated dual CAN, 64 GPIO, and on-chip 3.3 V regulator reduce BOM count and PCB area versus discrete MCU + regulator + CAN transceiver solutions. | Use Scenario: Closed-loop motor control system for electric power-assisted steering with torque feedback and fault diagnostics. IC Role / Device Role / Timing Role: Real-time motor commutation controller using PWM outputs, ADC sampling of current/voltage/temperature, and CAN reporting of status and errors. Use Value: 8-channel PWM with dead-time insertion, 12-bit ADC with hardware triggers, and XGATE offload ensure sub-100 µs control loop execution at 50 MHz. |
| Engine Control Unit (ECU) Auxiliary | Commercial Vehicle Telematics Gateway |
Use Scenario: Secondary engine management node handling throttle position, coolant temperature, and OBD-II diagnostics communication. IC Role / Device Role / Timing Role: Sensor signal conditioner and CAN gateway between primary ECU and diagnostic tools; performs analog acquisition and protocol translation. Use Value: 16-channel 12-bit ADC with internal temperature sensor and dual CAN interfaces enable accurate sensor fusion without external signal conditioning ICs. | Use Scenario: In-vehicle data aggregator routing GPS, cellular modem, and fleet sensor data across multiple CAN buses and UART links. IC Role / Device Role / Timing Role: Protocol bridge and message router with time-stamped CAN frame buffering, UART-to-CAN translation, and firmware update handling. Use Value: XGATE co-processor manages CAN receive/transmit queues while main CPU runs Linux-compatible bootloader and OTA update stack. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512MAG | 512 KB flash, 32 KB RAM, adds EEPROM and enhanced BDM; larger die size and higher power consumption | Targeted at high-end engine ECUs requiring larger code space and nonvolatile parameter storage | Select when >256 KB flash or embedded EEPROM is required; not pin-compatible due to 112-pin MAPBGA package |
| S912XEQ512J3MAG | Same 80-pin LQFP package; adds Ethernet MAC, USB 2.0 OTG, and 512 KB flash; lacks XGATE co-processor | Designed for infotainment gateways needing wired/wireless connectivity; no hardware-accelerated peripheral offload | Choose for networked applications where Ethernet/USB outweigh need for XGATE real-time offload; pinout differs in peripheral assignment |
Compared with MC9S12XDP512MAG and S912XEQ512J3MAG, the S9S12XS256J0MALR delivers optimal balance of real-time performance (via XGATE), CAN integration, and compact 80-pin LQFP packaging for cost-sensitive automotive body electronics - without over-provisioning flash or adding unnecessary peripherals.
Availability
S9S12XS256J0MALR is available at Aetrix Electronics and suitable for automotive body control modules, electronic power steering systems, and commercial vehicle telematics gateways requiring stable component supply, long lifecycle support, and AEC-Q100 Grade 2 qualification.
Supply support for S9S12XS256J0MALR 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 secure connectivity solutions for automotive, industrial, and IoT markets, with deep heritage in automotive microcontrollers dating to Motorola's HCS12 lineage.
The S12XS family - including the S9S12XS256J0MALR - was designed specifically for cost-optimized, real-time automotive body electronics requiring dual CAN, robust I/O, and integrated power regulation without external components.
FAQ
What is the maximum operating temperature range for the S9S12XS256J0MALR?
The S9S12XS256J0MALR is qualified to AEC-Q100 Grade 2 standards, supporting continuous operation from –40°C to +105°C ambient temperature. Its on-die temperature sensor (connected to ADC channel AD0[17]) is factory-calibrated across this range and provides ±3°C accuracy for thermal monitoring in automotive environments.
Does the S9S12XS256J0MALR support CAN FD?
The S9S12XS256J0MALR does not natively support CAN FD physical layer or protocol features. Its dual MSCAN modules implement ISO 11898-1 (CAN 2.0B) only, with maximum bit rates up to 1 Mbps. CAN FD functionality requires external transceivers and software abstraction layers - but full protocol compliance (e.g., flexible data rate, extended DLC) is not supported in hardware.
How is flash programming performed on the S9S12XS256J0MALR?
Flash programming on the S9S12XS256J0MALR is performed via the Background Debug Module (BDM) interface using standard Freescale/NXP BDM protocol. It supports in-system programming through a single-wire connection (BKGD pin), with no need for external high-voltage programming signals. The S9S12XS256J0MALR also allows field updates via CAN or UART using custom bootloader firmware.
What voltage levels are supported on the I/O pins of the S9S12XS256J0MALR?
All general-purpose I/O pins on the S9S12XS256J0MALR are 5 V tolerant, even when the core operates at 3.3 V. This allows direct interfacing with legacy 5 V sensors, switches, and actuators without level-shifting circuitry. Analog inputs (AD0[0–15]) accept 0–5 V signals, and the internal ADC reference is selectable between VDDA and external VREFH/VREFL.
Is the S9S12XS256J0MALR pin-compatible with other S12XS family members?
The S9S12XS256J0MALR is pin-compatible with other 80-pin LQFP variants in the S12XS family (e.g., S9S12XS128J0MALR, S9S12XS64J0MALR), sharing identical mechanical footprint and signal mapping. However, feature availability (e.g., flash size, RAM, peripheral enablement) differs per variant and must be verified in the respective device configuration registers during initialization.
S9S12XS256J0MALR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 112-LQFP
- Series:
- HCS12X
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- HCS12X
- Core Size:
- 16-Bit
- Speed:
- 40MHz
- Connectivity:
- CANbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 91
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.72V ~ 5.5V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12XS256J0MALR FAQ
1.How can I place an order for S9S12XS256J0MALR through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12XS256J0MALR 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 S9S12XS256J0MALR reliable?
The price and inventory of S9S12XS256J0MALR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12XS256J0MALR is usually 5 days.
3.What payment methods are accepted for S9S12XS256J0MALR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12XS256J0MALR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12XS256J0MALR?
S9S12XS256J0MALR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12XS256J0MALR 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 S9S12XS256J0MALR?
For technical support, including S9S12XS256J0MALR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12XS256J0MALR requirements.
6.How does Aetrix verify that S9S12XS256J0MALR is sourced from the original manufacturer or authorized distributors?
All S9S12XS256J0MALR 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 S9S12XS256J0MALR meets industry standards.
7.What is the process for return or replacement of S9S12XS256J0MALR?
All S9S12XS256J0MALR units undergo pre-shipment inspection (PSI). If there is an issue with S9S12XS256J0MALR, 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 S9S12XS256J0MALR part is unused and in its original packaging.
Return procedure for S9S12XS256J0MALR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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