S9S12HZ64J3CAAR - 64KB Flash S12 MCU, 50MHz | NXP Semiconductors
MPN: S9S12HZ64J3CAAR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.45 | $12.45 |
| 10 | $11.2 | $112.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.4 | $4,200.00 |
| 1,000 | $7.1 | $7,100.00 |
S9S12HZ64J3CAAR Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and peripheral interfaces into one device. The S12 core is a 16-bit CISC architecture derived from the original HC12/HCS12 lineage, well known in automotive body electronics and industrial control for its deterministic interrupt latency, byte-level EEPROM support, and BDM (Background Debug Mode) for in-circuit debug. Within the broader taxonomy, S9S12HZ64J3CAAR belongs to the embedded processor -> microcontroller -> 16-bit MCU -> automotive-grade MCU hierarchy.
Key features of this part include 64KB of Flash program memory, 50 MHz maximum bus clock, 80-pin QFP package, industrial temperature grade (-40C to +85C), and automotive qualification. The MCS12H family integrates peripherals commonly needed for instrumentation, including timers, PWM, A/D, SCI/SPI, CAN, and GPIO. The 80-pin QFP provides ample I/O for parallel displays, keypads, sensor arrays, and motor-driver interfaces that are common in body and chassis ECUs.
Architecturally, the S12 core uses a 16-bit data path with a rich addressing model that supports both linear and paged memory access, with BDM allowing non-intrusive debugging. The 50 MHz clock provides 40 ns instruction-cycle time, more than adequate for sampling, closed-loop control, and CAN-based communication at 500 kbps to 1 Mbps in body-electronics networks.
Typical applications include automotive instrumentation (cluster and gauge drivers), industrial motor control, CAN-based body controllers, sensor acquisition nodes, and human-machine interface (HMI) modules. The combination of Flash program memory, industrial-grade temperature range, and QFP 80 footprint suits designs that require hand-reworkable, leaded-package assembly rather than BGA or QFN.
When designing with this part, engineers should use CodeWarrior or NXP's S12 compiler toolchain, plan BDM debug connector placement early, and verify that the 80-pin QFP land pattern matches the PCB footprint library. The Flash endurance and retention specifications should be reviewed against the target product's write-cycle profile.
This page synthesizes distributor pricing, drop-in cross-reference alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers an at-a-glance view of specification, footprint, and lifecycle considerations.
Drop-in alternatives for S9S12HZ64J3CAAR — 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 S9S12HZ64J3CAAR (same form factor and footprint) — differing in Core Architecture, Operating Temperature, Package, Mounting Type, Program Memory (Flash).
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View Datasheet →S9S12HZ64J3CAAR Maximum Ratings & Electrical Characteristics
| Core Architecture | S12 (16-bit CISC) |
| Family | MCS12H (S12H / Swordfish) |
| Program Memory (Flash) | 64 KB |
| Maximum CPU Clock | 50 MHz |
| Operating Temperature Range | -40C to +85C (Industrial) |
| Package Type | QFP 80 (80-pin QFP, gull-wing terminals) |
| Package Code | QFP |
| Package Shape | Square |
| Number of Terminals | 80 |
| Mounting Type | Surface Mount (gull-wing leads) |
| Qualification | Automotive Qualified (per NXP product page) |
| On-chip Debug | BDM (Background Debug Mode) |
| Data Bus Width | 16-bit |
S9S12HZ64J3CAAR square Pin Configuration Guide
Pin configuration for S9S12HZ64J3CAAR (square 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 S9S12HZ64J3CAAR.
Refer to the datasheet for full pin configuration.
Typical Applications
S9S12HZ64J3CAAR is suitable for 7 applications: Automotive Instrumentation Cluster, CAN-Based Body Controller, Industrial Motor Control, Sensor Acquisition Node, Human-Machine Interface (HMI) Module, Automotive Lighting Controller, Power Tools and Appliance Control.
Automotive Instrumentation Cluster
The S9S12HZ64J3CAAR fits automotive instrument cluster designs because its 16-bit S12 core delivers the deterministic interrupt response required for driving analog gauges, stepper motors, and CAN-based gauge data updates at 100 Hz. Its 64KB Flash holds cluster firmware plus calibration tables, while the -40C to +85C rating and AEC automotive qualification (per NXP product page) cover cabin thermal environments. The QFP 80 footprint provides the GPIO count for backlight drivers, CAN, SPI display links, and buzzer/indicator outputs typical in gauge modules. Placed between the 12V reverse-protected bus and the gauge-driver ICs, the S12 efficiently multiplexes analog inputs (fuel, temperature) while maintaining tight timing on pointer-stepper PWM signals; unlike 32-bit alternatives it draws less current and has a leaner toolchain footprint.
Recommended
CAN-Based Body Controller
For body controllers (door modules, seat controllers, BCM nodes), the S9S12HZ64J3CAAR provides the on-chip CAN 2.0B peripheral and 50 MHz CPU clock needed for 500 kbps CAN traffic with deterministic response. Its 64KB Flash holds CANopen/OSEK or AUTOSAR-style application code, while RAM-backed message buffers handle bus arbitration without intervention. Industrial-grade -40C to +85C operation tolerates the cabin and door-cavity thermal profile. The QFP 80 package exposes enough pins to drive multiple LIN sub-buses, mirror-fold motors, and LED indicators. In a typical BCM the S12 sits between the 12V battery feed and the CAN/LIN transceivers, prioritizing time-critical CAN messages over background tasks.
Recommended
Industrial Motor Control
Industrial motor-control applications (small BLDC, stepper, brushed-DC drivers) benefit from the S9S12HZ64J3CAAR's 50 MHz core and integrated PWM generators, which handle field-oriented control loops at kHz switching rates with low jitter. Its 64KB Flash holds the control algorithm plus lookup tables; the -40C to +85C rating tolerates factory-floor cabinets. QFP 80 outputs route directly to gate-driver inputs for the inverter stage. Used between the 24V industrial bus and the three-phase inverter, the S12 generates complementary PWM with deadband insertion and reads back shunt currents via its A/D converter in real time, providing a low-cost alternative to DSP-based motor controllers for sub-kW drives.
Recommended
Sensor Acquisition Node
Distributed sensor nodes on industrial CAN or LIN networks leverage the S9S12HZ64J3CAAR's A/D converter, timers, and SCI peripherals to digitize analog sensors (pressure, flow, temperature) and publish results over CAN. The 64KB Flash holds the sampling scheduler and calibration data, while 50 MHz CPU clock keeps the oversampling ratio high. QFP 80 provides header pins for sensor analog-front-end interfacing and bus isolation. In a typical sensor module the S12 polls every 10 ms, applies digital filtering, and emits a CAN frame on event-trigger or cyclic cadence; its industrial temperature grade permits deployment near HVAC plenums or hydraulic manifolds.
Recommended
Human-Machine Interface (HMI) Module
HMIs in industrial operator panels or appliance front panels use the S9S12HZ64J3CAAR's GPIO and SPI to drive character/graphic LCDs, scan key matrices, and debounce tactile inputs. The 64KB Flash holds the menu firmware plus display font tables, and 50 MHz CPU supports mid-rate screen redraws. The QFP 80 footprint exposes the 50+ GPIO pins needed for a 4x4 keypad, 4-digit LCD, and status LEDs. In an HMI module the S12 sits between the user interface and a higher-level host controller, offloading keypad scanning and indicator blinking from the main CPU so the application processor can sleep.
Recommended
Automotive Lighting Controller
Headlight-leveling modules, tail-light controllers, and adaptive-driving-beam ECUs deploy the S9S12HZ64J3CAAR for its PWM channels and CAN connectivity, which coordinate LED strings and stepper-motor actuators for beam aim. The 64KB Flash holds the lighting-state machine and diagnostic routines, while automotive qualification supports cabin and lamp-housing thermal loads. The QFP 80 routing exposes LIN/CAN transceivers, LED-driver enable lines, and stepper control outputs. Typical placement is between the vehicle CAN bus and the LED-driver stage, sequencing turn signals, DRL, and adaptive beam patterns with millisecond-level determinism.
Recommended
Power Tools and Appliance Control
Brushless drills, washing-machine motor drivers, and induction-cooktop controllers use the S9S12HZ64J3CAAR for its deterministic 16-bit timing, on-chip A/D, and PWM channels suited to inverter-style appliances. The 64KB Flash holds the speed/torque loop and safety-lock firmware, while industrial temperature grade handles motor-heated enclosures. QFP 80 pins drive three-phase gate signals and read back shunt/leg currents. Used as the supervisory controller between the mains-isolated gate-driver stage and the user-interface board, the S12 enforces brown-out, over-current, and rotor-lock protection with deterministic interrupt latency unmatched by 8-bit MCUs in the same price tier.
Recommended
Recommended Products Summary
Engineering reference data for S9S12HZ64J3CAAR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S12H256VFVE | S9S12HZ128J3VAL | MC9S12XHZ256VAG | S912XEQ384J3CALR | MC9S12GC64CFAE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | QFP 80 | QFP 80 - same | QFP 80 - same | QFP 80 - same | QFP 80 - same | QFP 80 - same |
| Core | S12 (16-bit) | S12H (16-bit) | S12H (16-bit) | S12X with XGATE (16-bit) | S12X with XGATE (16-bit) | S12 (16-bit) |
| Flash Memory | 64 KB | 256 KB | 128 KB | 256 KB | 384 KB | 64 KB |
| Max CPU Clock | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 25 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| On-chip Debug | BDM | BDM | BDM | BDM | BDM | BDM |
| Automotive Qualified | Yes | Yes | Yes | Yes | Yes | Yes |
| Unit Price (qty-1, approx.) | USD 12.45 | Higher (more Flash) | Slightly higher | Higher | Higher | Lower or comparable |
Key Differentiators
- Mature 16-bit S12 architecture with deterministic interrupt response (vs MC9S12XHZ256VAG)
- Lower-cost 64KB Flash option in QFP 80 within MCS12H family (vs MC9S12H256VFVE)
- Hand-reworkable QFP 80 leaded package (vs S912XEQ384J3CALR)
Design Notes
Estimated: route the QFP 80 device with a 4-layer stack-up using a continuous ground plane on layer 2 directly beneath the device body. Place 0.1uF decoupling capacitors on every VDD/VSS pair within 5 mm lead length, with bulk 4.7uF tantalum or ceramic on each power pin group. The BDM header (BKGD, RESET, VDD, GND) should be brought out to a 2x5 0.1-inch header for in-circuit debug, ideally with series 100-ohm protection on BKGD to reduce accidental overvoltage during board bring-up.
Do not assume the S9S12 prefix implies identical silicon to the MC9S12 prefix ordering code without consulting the NXP product change notification (PCN) system. Some S-prefix parts are Freescale legacy labels that map to MC-prefix new-ordering codes; confirm the die revision, mask set, and errata list before committing to a long-lifecycle design. Also verify the Flash endurance (typically 10K cycles) and retention (typically 15 years) against the target product's write profile.
Estimated: at 50 MHz CPU clock and full peripheral activity (CAN, PWM, A/D), the S9S12HZ64J3CAAR in QFP 80 typically dissipates 0.3-0.6 W of core power. The QFP 80 plastic package has a typical theta_JA of 40-50 C/W on a 4-layer JEDEC board, yielding a 15-30 C junction rise at room ambient. Industrial -40C to +85C operation is comfortably within this envelope; for sealed enclosures with no airflow, derate the peripheral clock or add copper thermal relief to keep Tj below 110 C.
Use a low-dropout regulator with at least 100 mA headroom for the VDD rail (typical 5V or 3.3V depending on the variant's datasheet section). Hold RESET low for at least 32 CPU cycles after VDD reaches specification to guarantee a clean startup; the S12 internal PLL also requires a stable clock reference before lock. Add a 1kohm pull-up on the RESET line to VDD so the part boots predictably after power-on.
Compliance Information
Compliance status not confirmed in provided web data; the IPC1752 XML link (per NXP datasheet) typically contains material declaration but specific RoHS/REACH status was not extracted in the verified snippets. Automotive qualification is stated on NXP product page, but specific AEC-Q100 temperature grade was not detailed in the retrieved snippet.
