S9S12XS64J1VAAR - 16-bit S12X MCU, 64KB Flash, 80-QFP | NXP
MPN: S9S12XS64J1VAAR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.85 | $7.85 |
| 10 | $7.1 | $71.00 |
| 100 | $6.35 | $635.00 |
| 500 | $5.65 | $2,825.00 |
| 1,000 | $5.05 | $5,050.00 |
S9S12XS64J1VAAR Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile working memory (RAM), peripherals and I/O. Within the broader taxonomy, the S12XS sits under 16-bit MCU -> automotive MCU -> HCS12X family -> embedded controller. Its XGATE co-processor offloads interrupt-driven I/O servicing from the main S12X CPU, allowing the CPU to focus on application logic while the co-processor handles high-speed peripheral data movement - a defining feature of the S12X family versus the older HCS12.
Key features include 64 KB of Flash with security, 4 KB of RAM, a 40 MHz S12X core producing 25 MHz effective instruction throughput, an Enhanced Capture Timer (ECT), an 8/10-bit Analog-to-Digital Converter (ADC), an 8-channel PWM, MSCAN (CAN 2.0A/B) for vehicle networking, SCI and SPI serial interfaces, and a periodic interrupt timer. The 'V' temperature grade marks -40C to +105C operation for under-hood automotive environments, and the 'A' suffix denotes the 80-LQFP package.
The S12X architecture pairs a 16-bit CISC CPU with a programmable 16-bit co-processor that executes a RISC-like instruction set optimized for moving data between peripherals and memory. This dual-engine design enables deterministic real-time response in CAN-heavy body control applications where traditional polling loops would starve the application layer.
Typical applications include automotive body control modules, HVAC door modules, instrument clusters, lighting controllers, and LIN/CAN gateway nodes. The combination of 64 KB Flash, CAN interface, PWM channels, and AEC-Q100 qualification also suits industrial motor control and battery management peripherals.
When designing with this device, allocate sufficient Flash for both application code and a robust bootloader with rollback. The single 1.8 V supply simplifies power-tree design, but be aware that I/O is 5 V-tolerant only on designated pins and external CAN transceivers are still required for bus isolation.
This page synthesizes distributor stock, package markings, and AEC-Q100 qualification status for the S9S12XS64J1VAAR alongside pin-compatible S12XS family alternatives, providing information not bundled in the standalone reference manual.
Drop-in alternatives for S9S12XS64J1VAAR — 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 S9S12XS64J1VAAR (same form factor and footprint) — differing in Package, Operating Temperature, Flash Memory, Core, Number of Terminals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S9S12XS128J1VAAR
✅ Drop-In📋 Reference alternative (not in catalog)
S9S12XS32J1VAAR
✅ Drop-In📋 Reference alternative (not in catalog)
S912XET512J2VAGR
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →S9S12XF384J2MLMR
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →S9S12XA256CAAR
✅ Drop-In📋 Reference alternative (not in catalog)
S912XEG384J2VAL
✅ Drop-In✓ In Stock
$17.8 / Unit
View Datasheet →S9S12XS64J1VAAR Maximum Ratings & Electrical Characteristics
| Core | HCS12X (S12X CPU + XGATE co-processor) |
| Bit Width | 16-bit |
| Program Memory (Flash) | 64 KB |
| Maximum Bus Frequency | 40 MHz |
| Supply Voltage (VDD) | 1.72 V to 1.98 V |
| I/O Pins | 59 |
| Operating Temperature | -40C to +105C (Automotive V grade) |
| Package | 80-LQFP, 14 x 14 mm, 0.65 mm pitch |
| Package Height | 2.20 mm |
| AEC-Q100 | Qualified (Automotive) |
| CAN (MSCAN) Interfaces | 1 x CAN 2.0A/B |
| SCI / SPI | Yes (SCI and SPI serial interfaces) |
| PWM Channels | 8 channels |
| ADC | 8/10-bit |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
S9S12XS64J1VAAR 2.20 mm Pin Configuration Guide
Pin configuration for S9S12XS64J1VAAR (2.20 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 S9S12XS64J1VAAR.
Refer to the datasheet for full pin configuration.
Typical Applications
S9S12XS64J1VAAR is suitable for 6 applications: Automotive Body Control Module, HVAC Door and Blower Module, Instrument Cluster MCU, Lighting Control Module, CAN/LIN Gateway Node, Industrial Battery Management Peripheral.
Automotive Body Control Module
The S9S12XS64J1VAAR fits body control modules (BCMs) because it integrates MSCAN, SCI, SPI, 8-channel PWM and 64 KB Flash in a single 1.8 V device, removing the need for a separate CAN ASIC. XGATE offloads CAN message handling so the S12X CPU can run lighting, door-lock and wiper logic concurrently. Pin-to-pin compatibility with S12XS128/S12XS32 lets OEMs reuse PCB artwork across trim levels. The AEC-Q100 V-grade (-40C to +105C) rating survives under-dash thermal stress.
Recommended
HVAC Door and Blower Module
In HVAC door and blower modules the S9S12XS64J1VAAR drives up to 8 PWM channels for mixed-air door actuation and brushless blower control while monitoring temperature with its 8/10-bit ADC. The 40 MHz S12X core executes PID loops with sub-millisecond cycle times, and the 64 KB Flash accommodates lookup tables for mode-position curves. Its 80-LQFP footprint simplifies single-side PCB assembly typical of small blower modules.
Recommended
Instrument Cluster MCU
The S9S12XS64J1VAAR is a strong match for entry-level instrument clusters driving stepper gauge motors via PWM and capturing wheel-speed / fuel-level inputs over ADC. XGATE services the MSCAN link to the BCM in parallel, freeing the CPU for gauge-sweep animation and telltale logic. 64 KB Flash is sufficient for stepper commutation tables and basic OBD-II diagnostic stacks without forcing designers into the larger S12XE family.
Recommended
Lighting Control Module
Front-lighting and tail-lighting ECUs benefit from the S9S12XS64J1VAAR's combination of PWM channels for LED dimming, ADC for current sensing, and CAN for body-network integration. The XGATE engine handles PWM update events and fault-detection interrupts without burdening the main CPU, allowing smooth daylight-running-light fades and matrix-LED sequencing. AEC-Q100 V-grade supports under-hood headlamp-module placement.
Recommended
CAN/LIN Gateway Node
As a sub-gateway between a CAN backbone and LIN sub-nets, the S9S12XS64J1VAAR provides one MSCAN plus SCI/SPI for LIN-mastering via external LIN transceivers, allowing routers, mirror modules and seat controllers to aggregate to the central BCM. 64 KB Flash fits compact gateway firmware and frame-routing tables. The 80-LQFP footprint and 1.8 V supply match the small PCBs typical of in-door modules.
Recommended
Industrial Battery Management Peripheral
Beyond automotive, the S9S12XS64J1VAAR's AEC-Q100 V-grade and CAN interface make it a robust peripheral MCU in industrial battery management systems (BMS) where it monitors cell voltages through its 8/10-bit ADC and reports state-of-charge over CAN to a central controller. The 1.8 V core simplifies shared-rail design with fuel-gauge ICs, and 64 KB Flash fits coulomb-counting tables and cell-balancing firmware for 12-16S packs.
Recommended
Recommended Products Summary
Engineering reference data for S9S12XS64J1VAAR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S9S12XS128J1VAAR | S9S12XS32J1VAAR | S912XET512J2VAGR | S9S12XF384J2MLMR | S9S12XA256CAAR | S912XEG384J2VAL |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 80-LQFP (14x14 mm) | 80-LQFP (14x14 mm) | 80-LQFP (14x14 mm) | 80-LQFP (same) | 80-LQFP (same) | 80-LQFP (same) | 80-LQFP (same) |
| Core | HCS12X (S12X + XGATE) | HCS12X | HCS12X | HCS12XE | HCS12XF | HCS12XA | HCS12XEG |
| Flash | 64 KB | 128 KB | 32 KB | 512 KB | 384 KB | 256 KB | 384 KB |
| Maximum Bus Frequency | 40 MHz | 40 MHz | 40 MHz | 50 MHz | 50 MHz | 40 MHz | 50 MHz |
| Supply Voltage | 1.72 V to 1.98 V | 1.72 V to 1.98 V | 1.72 V to 1.98 V | 1.72 V to 1.98 V | 1.72 V to 1.98 V | 1.72 V to 1.98 V | 1.72 V to 1.98 V |
| AEC-Q100 Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
| MSCAN Channels | 1 | 1 | 1 | 2 to 3 | 2 | 1 to 2 | 2 |
| PWM Channels | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
Key Differentiators
- 64 KB Flash with XGATE co-processor in 80-LQFP (vs S9S12XS32J1VAAR)
- Lower-cost entry point with same peripherals (vs S9S12XS128J1VAAR)
- Single 1.8 V supply simplifies power tree (vs S912XET512J2VAGR)
Design Notes
The S9S12XS64J1VAAR operates from a single 1.72 V to 1.98 V VDD rail; the VDDR pin (on-chip regulator input) typically connects to a 5 V or 3.3 V source through a small filter, while VDD1/VDD2 (1.8 V core) are outputs of the internal regulator. Bulk-decouple each VDD pin with a 100 nF ceramic plus a 4.7 uF tantalum near the package, and place a 10 uF reservoir at the regulator output to handle XGATE in-rush current.
Several S12X pins are 5 V-tolerant only when explicitly documented; mixing 5 V and 3.3 V peripherals on a single port without level shifters can damage I/O. Always enable the S12X watchdog (COP) and the illegal-address reset in software - field failures in body modules are frequently traced to an uninitialized COP after a brownout. Reserve the BKGD pin for in-circuit debug and do not load it with a strong pull-up.
Route the external oscillator (XTAL/EXTAL) traces short and symmetric with a continuous ground pour under the crystal can to minimize EMI and jitter; keep CANH/CANL differential traces matched within 2 mm and stitch ground on both sides of the bus. The 80-LQFP exposed thermal pad (if present on the variant) must be soldered to a copper island with at least 6 thermal vias to the inner ground plane to keep the junction temperature within the 105C grade.
Estimated: at full 40 MHz CPU and XGATE activity, core current is approximately 30 mA; at 1.8 V core supply this is roughly 54 mW of dissipation. The 80-LQFP with no exposed pad and minimum copper (per JEDEC EIA/JESD51) has a theta_JA near 65 C/W, yielding a junction rise of approximately 3.5C above ambient - well within the 105C V-grade. Adding a 1 square inch copper pour drops theta_JA to roughly 35 C/W for additional margin in enclosed housings.
Compliance Information
AEC-Q100 V-grade (-40C to +105C) per NXP S12XS family product catalog. RoHS and lead-free confirmed via NXP product page; halogen-free status not stated in retrieved snippets and marked unknown.
