Overview
The S912XDP512J1VAGR is a high-performance 16-bit automotive-grade microcontroller (MCU) from NXP (formerly Freescale)’s HCS12X series , designed for applications related to body electronics, powertrain auxiliary control, industrial control, and safety.
This device features up to 512KB of flash memory, powerful peripheral resources, rich communication interfaces, XGATE coprocessor, multi-power domain management, and a wide temperature range , making it widely used in CAN networks, automotive instruments, intelligent controllers, and other fields.
Its superior stability, anti-interference capabilities, and automotive-grade certification make the S912XDP512J1VAGR a classic choice for automotive electronics engineers.
Core parameters
Parameter Items | Specification |
CPU architecture | HCS12X 16-bit kernel |
Maximum clock speed | 50 MHz (with XGATE coprocessor for parallel acceleration) |
Flash memory capacity | 512 KB |
RAM capacity | 32 KB |
EEPROM | 4 KB |
XGATE coprocessor | Supports collaborative parallel execution of hardware tasks, significantly reducing the load on the main CPU. |
Operating voltage | 3.13 V ~ 5.5 V |
I/O ports | Up to 91 GPIOs |
ADC | 12-bit ADC × 16 channels |
CAN interface | 2 (compliant with ISO 11898 standard) |
SPI interface | Route 2 |
I²C interface | Route 1 |
SCI (UART) | Route 3 |
PWM module | 8-channel programmable PWM |
timer | 16-bit timer, multi-channel input capture/output compare |
Operating temperature range | -40°C ~ +125°C (Automotive grade) |
Packaging | 144-LQFP (VAGR) |
ESD immunity | Meets automotive AEC-Q100 requirements |
Features
Automotive-grade reliability (AEC-Q100 certified)
It meets stringent vehicle standards and can operate stably even under long-term high-temperature environments.
XGATE Hardware Accelerator
It can independently handle tasks such as interrupts and data migration, increasing the overall system throughput by 2 to 4 times .
Powerful Flash/RAM configuration
Large-capacity 512KB program Flash, suitable for integration with complex vehicle body control software and modules.
Abundant peripherals and communication interfaces
2-channel CAN
3-way UART
SPI ×2 / I²C ×1
16-channel 12-bit ADC
It meets the multi-protocol requirements of automotive and industrial applications.
High anti-interference capability
The automotive-grade EMC/ESD design is adapted to high-noise environments, such as electric motor drives and automotive powertrain systems.
Low power management
Multiple low-power modes are suitable for long-term standby operation, such as the body module and remote wake-up function.
Typical application scenarios
Body Control System (BCM)
Lighting, power windows, central locking, and door modules.
Automotive Instrument and Display System
Combination instrument, display control, and fault detection unit.
Battery Management System (BMS) and Energy Control
Battery monitoring is accomplished through collaboration between CAN and sensors.
Air conditioning and HVAC systems
Damper control, compressor management, and intelligent temperature control algorithm.
Motor drive auxiliary system
Power windows, power seats, power tailgate.
Industrial automation equipment
Sensor acquisition, industrial bus nodes, remote controllers.
Performance Comparison
Indicator Comparison | S912XDP512 (this model) | MC9S12DG256 | S32K144 (32-bit new architecture) |
CPU bit width | 16-bit | 16-bit | 32-bit ARM Cortex-M4 |
clock speed | 50 MHz | 25 MHz | 112 MHz |
Flash | 512 KB | 256 KB | 512 KB |
CAN | Route 2 | Route 1 | Maximum 3 channels |
Power consumption | middle | lower | Low |
cost | middle | Low | Slightly higher |
Among classic 16-bit MCU platforms , the S912XDP512 is one of the most powerful and resource-rich models.
Manufacturer Profile: NXP Semiconductors
NXP is a leading global supplier of automotive electronics solutions, and its HCS12/HCS12X series MCUs have been widely used in the automotive industry for over 20 years.
The S912XDP512 represents one of the high-end models in the HCS12X family, and its durability, high integration, and stable software ecosystem have made it a long-term product for many automakers.
Why choose S912XDP512J1VAGR?
● Automotive-grade certification, long-term supply guarantee
● Abundant resources: 512KB Flash + XGATE parallel coprocessor
● 2-channel CAN, suitable for intelligent vehicle network architecture
● High-reliability EMC/ESD performance adapted to automotive environments
● Wide temperature range design (–40~125°C) suitable for harsh operating conditions
● Compatible with HCS12 ecosystem, abundant development resources
Frequently Asked Questions (FAQ)
Q1: Does this MCU support CAN FD?
No. This MCU only has a classic CAN (up to 1 Mbps) controller. To enable CAN FD functionality, an external CAN FD transceiver is required , and the MCU itself must also support the CAN FD protocol stack.
Q2: Can it be used as an instrument MCU?
Yes. Its built-in moderate-capacity Flash, stable ADC, and multiple communication interfaces (such as UART, SPI, I²C, CAN, etc.) can meet the sampling, display, and communication needs of most instrument applications, making it suitable as a general-purpose instrument control core.
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