S9S12H256J1VFVR - 16-Bit 50MHz 256KB MCU | NXP
MPN: S9S12H256J1VFVR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $21.3 | $21.30 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
S9S12H256J1VFVR Overview
A microcontroller integrates a processor core, nonvolatile program memory, data memory, peripherals, and communication interfaces into one embedded-control component. In this case, the HCS12 platform is suitable for automotive body, chassis, comfort, gateway, and distributed-control systems where a dedicated MCU must execute control software and manage digital inputs and outputs. The 50 MHz clock provides substantially more instruction throughput than an 8-bit MCU, while 256 KB of flash provides dedicated space for application code, calibration data, and diagnostic routines.
The S9S12H256J1VFVR is identified as an automotive MCU and is supplied in a 144-pin LQFP package. The 144-pin count offers more external interface and power options than smaller 16-bit packages, which can help when a design requires multiple communication channels, analog inputs, timer outputs, or control signals. Tape-and-reel ordering is indicated by the distributor listing. Detailed RAM capacity, peripheral inventory, operating-temperature limits, flash endurance, and electrical maximums are not present in the supplied evidence and therefore remain unverified here.
At 50 MHz with 256 KB of program flash, this device is positioned for embedded automotive workloads that need more control headroom than an entry-level 8-bit MCU. It can serve as the central controller for actuator logic, sensor aggregation, body-control modules, or communication gateways, provided the complete peripheral set and electrical limits are checked against the manufacturer datasheet before design release. Software compatibility should likewise be confirmed through the device errata, reference manual, and automotive qualification documentation rather than inferred from the orderable MPN alone.
The most important design consideration is package and firmware validation. A 144-LQFP footprint is relatively large and requires careful PCB escape routing, decoupling, ground planning, and assembly-process control. The verified distributor material confirms the package family and core attributes but does not provide the complete pin map, so engineers must obtain the official documentation before assigning signals or designing the land pattern. Firmware should also be qualified against the exact silicon revision and any applicable errata.
This page consolidates the verified distributor identity, core performance, memory, package, voltage-marketing information, sourcing context, and replacement constraints for S9S12H256J1VFVR. It separates confirmed specifications from missing technical fields and does not present unverified pin, peripheral, temperature, or lifecycle claims as facts. Contact XAIPART for current quotation, traceability, availability, and source inspection requirements.
Drop-in alternatives for S9S12H256J1VFVR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with S9S12H256J1VFVR (same form factor and footprint) — differing in Automotive Qualification, Package, Mounting Type, ADC, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S9S12H256J1VFVER
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →S9S12H256J1VFVE
✅ Drop-In✓ In Stock
$10.5 / Unit
View Datasheet →S912XDT256F1VAA
✅ Drop-In✓ In Stock
$13.6 / Unit
View Datasheet →S9S12HZ256CPV
✅ Drop-In📋 Reference alternative (not in catalog)
S9S12D32MFUE
✅ Drop-In📋 Reference alternative (not in catalog)
S9S12DJ256MFUE
✅ Drop-In📋 Reference alternative (not in catalog)
S9S12H256J1VFVR Maximum Ratings & Electrical Characteristics
| Microcontroller Type | 16-bit HCS12 microcontroller |
| Maximum Clock Frequency | 50 MHz |
| Flash Memory | 256 KB |
| Flash Organization | 256K x 8 |
| Architecture | HCS12 CISC |
| Supply Designation | 2.5 V / 5 V |
| Package | 144-LQFP |
| Package Body Size | 20 mm x 20 mm |
| Pin Count | 144 pins |
| Mounting Type | Surface mount |
| Automotive Qualification | Automotive |
| Orderable Packaging | Tape and reel |
S9S12H256J1VFVR 20 mm x 20 mm Pin Configuration Guide
Pin configuration for S9S12H256J1VFVR (20 mm x 20 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for S9S12H256J1VFVR.
Refer to the datasheet for full pin configuration.
Typical Applications
S9S12H256J1VFVR is suitable for 6 applications: Automotive Body Control Module, Vehicle Sensor Aggregator, Automotive Gateway Controller, Actuator Control Module, Lighting and Convenience System, Industrial Control Legacy Upgrade.
Automotive Body Control Module
S9S12H256J1VFVR fits an evaluation platform for centralized body electronics because the verified data identifies an automotive 16-bit HCS12 MCU with 256 KB flash and a 50 MHz clock. That combination can support door, lighting, locking, wiper, and auxiliary-load control software while leaving flash space for diagnostics and calibration. The 144-LQFP package provides numerous external connections, but complete peripheral and pin assignments must be confirmed from official NXP documentation before schematic capture. Production design also requires verification of the exact AEC-Q100 grade, temperature range, clock tolerance, watchdog behavior, and communication interfaces, none of which are established by the supplied distributor snippets.
Recommended
Vehicle Sensor Aggregator
The S9S12H256J1VFVR can serve as the processing center in a sensor-aggregation module that combines switch, resistive, and automotive-network inputs before reporting them to other vehicle controllers. Its verified 50 MHz execution rate and 256 KB flash capacity provide more control headroom than an 8-bit MCU, while the automotive designation aligns with a vehicle environment. The design must confirm whether the selected derivative includes the required ADC channels, CAN or LIN interfaces, timers, and input thresholds. Because those specifications are [DATA_NEEDED], firmware partitioning and signal-conditioning decisions should wait for the official data sheet, pinout, errata, and electrical limits.
Recommended
Automotive Gateway Controller
S9S12H256J1VFVR is a plausible candidate for an automotive gateway when its verified 16-bit HCS12 core, 50 MHz clock, and 256 KB flash meet the gateway's control requirements. Such a module may coordinate communication between body, comfort, and chassis domains, run periodic diagnostics, and manage debounce and fault-recovery logic. The 144-LQFP package can simplify access to multiple I/O and communication resources, although the actual peripheral mix remains unverified. Before committing, engineers should compare the required CAN, LIN, Ethernet, or other interfaces against the exact derivative datasheet and validate firmware drivers, clocking, wake-up, and network timing under worst-case bus-error conditions.
Recommended
Actuator Control Module
The S9S12H256J1VFVR can evaluate closed-loop actuator control where deterministic software must convert sensor information into motor, relay, or solenoid commands. A 50 MHz 16-bit processor supports more intensive state-machine and diagnostics code than a basic 8-bit controller, and the 256 KB flash capacity can hold application logic and calibration tables. The 144-LQFP package may provide ample pin options, but PWM channels, capture timers, ADC performance, output drive, and fault-protected I/O are not documented in the supplied evidence. Hardware release therefore requires checking absolute maximum ratings, timing, output current, thermal performance, and whether the automotive suffix provides the temperature and qualification level expected by the vehicle program.
Recommended
Lighting and Convenience System
S9S12H256J1VFVR fits preliminary development of lighting, locking, window, and convenience-control systems because its verified 256 KB flash and 50 MHz HCS12 performance provide ample program space for state logic and diagnostics. A centralized convenience controller can debounce inputs, supervise outputs, implement timing behavior, and report faults through automotive communication interfaces when those peripherals are present in the selected device. The verified package is 144-LQFP, which supports a substantial pin count but demands disciplined board planning. Since PWM resolution, wake-up sources, I/O protection, and diagnostic interfaces remain unverified, engineers should not finalize LED channels, body inputs, or low-power behavior until those specifications are confirmed in official documentation.
Recommended
Industrial Control Legacy Upgrade
S9S12H256J1VFVR can be considered for an industrial control retrofit that needs more computation and program memory than an 8-bit controller while retaining an automotive-qualified 16-bit MCU family. Its verified 50 MHz clock and 256 KB flash support larger control loops, event scheduling, and more capable diagnostics than a small entry-level MCU. However, the supplied evidence marks the device as automotive rather than industrial, and no temperature, EMC, endurance, or lifecycle details are available beyond the selected listing. Qualification must establish industrial-temperature suitability, supply tolerance, radiation or ESD requirements, long-term supply, and software support. Pin-level migration also requires the official 144-LQFP diagram rather than inference from package size.
Recommended
Recommended Products Summary
Engineering reference data for S9S12H256J1VFVR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S9S12H256J1VFVER | S9S12H256J1VFVE | S912XDT256F1VAA | S9S12HZ256CPV | S9S12D32MFUE | S9S12DJ256MFUE |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB indicated by family designation | 256 KB indicated by family designation | 32 KB indicated by family designation | 256 KB indicated by family designation |
Key Differentiators
- Exact-family sourcing alternatives (vs S9S12H256J1VFVER)
- Flash capacity parity within the supplied family set (vs S9S12D32MFUE)
- Same nominal memory class for potential 256 KB migration (vs S912XDT256F1VAA)
Design Notes
Treat the 144-LQFP package as a high-pin-count mixed-signal board rather than a generic memory device. Obtain the official land pattern and pin table before routing, then place mandatory supply decoupling at the device pins using the values and topology stated by NXP. Separate analog and digital returns where the pinout permits, maintain continuous ground references, and reserve programming, reset, and clock-test access. No pin assignments can be made from the supplied distributor snippets alone.
The verified listing identifies the part as 2.5 V / 5 V automotive hardware, but it does not provide operating-voltage limits or supply-current curves. Confirm every power rail, I/O threshold, injection-current limit, startup sequence, and external-interface voltage in the official electrical tables. Calculate regulator headroom from the maximum rail and transceiver demand rather than the nominal label; do not power neighboring 5 V peripherals from MCU pins unless the selected pin's drive and fault limits explicitly permit it.
The most dangerous migration mistake is assuming that a similar MPN stem guarantees interchangeability. Before substituting S9S12H256J1VFVER, S9S12H256J1VFVE, S912XDT256F1VAA, or another family member, compare the official ordering code, package drawing, pin multiplexing, clock limits, memory map, peripherals, temperature grade, qualification, and errata. A 144-LQFP footprint match alone is not sufficient when firmware depends on peripheral placement or reset behavior.
No active-current or thermal-resistance data were supplied, so junction temperature cannot be estimated responsibly. After obtaining the electrical tables, estimate worst-case dissipation from core current, enabled peripherals, and I/O loading, then add power loss from adjacent regulators and transceivers. Validate the exposed-pad or lead-heatsinking approach against the package drawing and PCB copper geometry. Use measured board temperature and device diagnostics for production thermal margin.
Compliance Information
The product is described as automotive, but the supplied evidence does not provide an exact AEC-Q100 grade or any product-compliance declarations.