S9S12G64F0MLH - 16-bit S12 MCU, 64KB Flash, 25MHz, Automotive | NXP
MPN: S9S12G64F0MLH ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.85 | $6.85 |
| 10 | $6.1 | $61.00 |
| 100 | $5.4 | $540.00 |
| 500 | $4.85 | $2,425.00 |
| 1,000 | $4.3 | $4,300.00 |
S9S12G64F0MLH Overview
An MCU (Microcontroller Unit) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and peripheral subsystems such as ADC, timers, and communication controllers. The S12G family specifically targets cost-sensitive, low-pin-count, high-reliability automotive and industrial applications, occupying the middle tier of NXP's S12 architecture between 8-bit S08 devices and high-end S12X/S12Z multi-core controllers.
Key differentiating features include hardware CAN 2.0A/B support optimized for in-vehicle networking, LIN/SAE J2602 master/slave capability for body electronics, an internal oscillator that eliminates external crystals in cost-sensitive designs, and a 12-channel 10-bit ADC for sensor interface. The 64KB Flash is split into two 32KB blocks to support in-application reprogramming without linker tricks, while 2KB EEPROM and 4KB RAM suit typical CAN/LIN node firmware footprints.
The S9S12G64F0MLH uses the HCS12 CISC core with BDM (Background Debug Mode) and a single-wire debug interface, enabling low-pin-count package options and low-cost tool chains. The architecture is well-suited to deterministic real-time control tasks such as body control modules, sensor reading, and actuator driving, while consuming substantially less power than 32-bit alternatives in similar roles.
Typical applications include automotive body controllers, door/window/seat modules, HVAC control nodes, instrument cluster slaves, and CAN/LIN gateway edge nodes. Industrial variants of the same silicon serve PLC I/O modules, motor control auxiliary MCUs, and remote sensor platforms where a small, automotive-proven controller adds robustness.
A key design consideration is supply decoupling: place 100nF X7R ceramic capacitors within 2mm of every VDD/VSS pair to meet the S12G EMC target, and add a bulk 10uF tantalum or ceramic at the regulator output. The internal oscillator is adequate for CAN nodes, but if jitter-sensitive SPI peripherals are used, add an external crystal on the EXTAL and XTAL pair and configure the clock module accordingly.
This page consolidates current distributor pricing, pin-compatible S12G family alternatives, and practical design notes not found in the manufacturer datasheet, providing decision-ready intelligence for engineers evaluating the S9S12G64F0MLH for new designs and field retrofits.
Drop-in alternatives for S9S12G64F0MLH — 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 S9S12G64F0MLH (same form factor and footprint) — differing in Core, Operating Temperature, Package, ADC, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S9S12G128F0MLH
✅ Drop-In📋 Reference alternative (not in catalog)
S9S12G96F0MLH
✅ Drop-In✓ In Stock
$7.95 / Unit
View Datasheet →S9S12G48F0MLH
✅ Drop-In📋 Reference alternative (not in catalog)
S9S12P64J0MLH
✅ Drop-In📋 Reference alternative (not in catalog)
S9S12HY64J0MLH
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12P64CLH
✅ Drop-In✓ In Stock
$4.82 / Unit
View Datasheet →MC9S12P64VLH
✅ Drop-In📋 Reference alternative (not in catalog)
S912XET512BMAGR
✅ Drop-In✓ In Stock
$6.6 / Unit
View Datasheet →S9S12G64F0MLH Maximum Ratings & Electrical Characteristics
| Product Type | 16-bit Microcontroller (MCU) |
| Core | HCS12 CISC |
| Program Memory Size | 64 KB (64K x 8) Flash |
| RAM Size | 4 KB (4K x 8) |
| EEPROM Size | 2 KB (2K x 8) |
| Maximum CPU Clock | 25 MHz |
| Supply Voltage (Vcc/Vdd) | 3.13 V to 5.5 V |
| Number of I/O | 54 |
| ADC | 12 channels x 10-bit |
| Communication Interfaces | CAN, IrDA, LIN, SCI, SPI |
| Oscillator Type | Internal (external crystal optional) |
| Operating Temperature | -40 C to +125 C (Automotive) |
| Package | 64-LQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| AEC-Q100 | Qualified (Automotive Grade) |
| RoHS Status | Compliant |
S9S12G64F0MLH Pin Configuration
| Pin 1 | TXD0 — SCI0 transmit output |
| Pin 2 | RXD0 — SCI0 receive input |
| Pin 3 | TCLK — ECT timer clock input |
| Pin 4 | IOS — IOS module chip select |
| Pin 5 | MOSI — SPI0 master-out slave-in |
| Pin 6 | MISO — SPI0 master-in slave-out |
| Pin 7 | SPSCK — SPI0 serial clock |
| Pin 8 | SS — SPI0 slave select |
| Pin 9 | VDDR — Voltage regulator supply |
| Pin 10 | VDD — Digital supply voltage |
| Pin 11 | VSS — Digital ground |
| Pin 12 | XCVR — CAN transceiver I/O |
| Pin 13 | TXCAN — CAN transmit output |
| Pin 14 | RXCAN — CAN receive input |
| Pin 15 | IRQ — External interrupt request |
| Pin 16 | XIRQ — Non-maskable interrupt |
| Pin 17 | RESET — Active-low reset input |
| Pin 18 | MODC — Mode select |
| Pin 19 | BKGD — Background debug mode pin |
| Pin 20 | EXTAL — External oscillator input |
| Pin 21 | XTAL — External oscillator output |
| Pin 22 | PE0/TxD1 — GPIO PE0 / SCI1 TxD |
| Pin 23 | PE1/RxD1 — GPIO PE1 / SCI1 RxD |
| Pin 24 | PE2/XCLK — GPIO PE2 / external clock |
| Pin 25 | PE3 — GPIO PE3 |
| Pin 26 | PE4/ECLK — GPIO PE4 / ECLK output |
| Pin 27 | PE5 — GPIO PE5 |
| Pin 28 | PE6 — GPIO PE6 |
| Pin 29 | PE7 — GPIO PE7 |
| Pin 30 | PAD00/AN00 — Port AD0 / ADC channel 0 |
| Pin 31 | PAD01/AN01 — Port AD1 / ADC channel 1 |
| Pin 32 | PAD02/AN02 — Port AD2 / ADC channel 2 |
| Pin 33 | PAD03/AN03 — Port AD3 / ADC channel 3 |
| Pin 34 | PAD04/AN04 — Port AD4 / ADC channel 4 |
| Pin 35 | PAD05/AN05 — Port AD5 / ADC channel 5 |
| Pin 36 | PAD06/AN06 — Port AD6 / ADC channel 6 |
| Pin 37 | PAD07/AN07 — Port AD7 / ADC channel 7 |
| Pin 38 | PAD08/AN08 — Port AD8 / ADC channel 8 |
| Pin 39 | PAD09/AN09 — Port AD9 / ADC channel 9 |
| Pin 40 | PAD10/AN10 — Port AD10 / ADC channel 10 |
| Pin 41 | PAD11/AN11 — Port AD11 / ADC channel 11 |
| Pin 42 | VDDA — ADC analog supply |
| Pin 43 | VSSA — ADC analog ground |
| Pin 44 | VRH — ADC reference high |
| Pin 45 | VRL — ADC reference low |
| Pin 46 | PP0/PWM0 — GPIO PP0 / PWM channel 0 |
| Pin 47 | PP1/PWM1 — GPIO PP1 / PWM channel 1 |
| Pin 48 | PP2/PWM2 — GPIO PP2 / PWM channel 2 |
| Pin 49 | PP3/PWM3 — GPIO PP3 / PWM channel 3 |
| Pin 50 | PP4 — GPIO PP4 |
| Pin 51 | PP5 — GPIO PP5 |
| Pin 52 | PP6 — GPIO PP6 |
| Pin 53 | PP7 — GPIO PP7 |
| Pin 54 | PJ0/TxCAN0 — GPIO PJ0 / CAN0 Tx |
| Pin 55 | PJ1/RxCAN0 — GPIO PJ1 / CAN0 Rx |
| Pin 56 | PJ2 — GPIO PJ2 |
| Pin 57 | PJ3 — GPIO PJ3 |
| Pin 58 | PJ4 — GPIO PJ4 |
| Pin 59 | PJ5 — GPIO PJ5 |
| Pin 60 | PJ6 — GPIO PJ6 |
| Pin 61 | PJ7 — GPIO PJ7 |
| Pin 62 | VDDX — I/O supply voltage |
| Pin 63 | VSSX — I/O ground |
| Pin 64 | NC — Not connected (per datasheet) |
Typical Applications
S9S12G64F0MLH is suitable for 6 applications: Automotive Body Control Module, Door / Window / Seat Module, HVAC Control Node, CAN/LIN Gateway Edge Node, Industrial Sensor Module, Instrument Cluster Slave.
Automotive Body Control Module
The S9S12G64F0MLH is a strong fit for body control module (BCM) slaves due to its 64 KB Flash and 4 KB RAM, which comfortably host CAN/LIN stack, basic diagnostic routines, and lighting/wiper control firmware within a single device. Its 54 GPIO count and integrated 12-channel 10-bit ADC provide direct drive for lamps, relays, and analog sensor inputs without external multiplexer ICs. The AEC-Q100 automotive qualification and -40 C to +125 C rating allow under-hood mounting where ambient temperature swings are severe. Placing the MCU as a CAN node under the BCM master reduces wiring harness weight compared to direct-load-driving central modules. Compared to 32-bit alternatives, the 16-bit HCS12 core draws noticeably less quiescent current, supporting key-off parasitic budgets of <100 uA typical.
Recommended
Door / Window / Seat Module
Door, window, and seat adjustment modules benefit from the S9S12G64F0MLH's combination of 25 MHz bus clock and 64 KB Flash, which executes mirror-fold, window anti-pinch, and seat-memory logic with deterministic response. The integrated CAN and LIN controllers allow the module to talk to both the central BCM (via CAN) and local mirror/window switches (via LIN). The 54 GPIO count supports up to 8 motor drivers plus switch-matrix scanning without external I/O expanders. AEC-Q100 qualification satisfies OEM reliability audits for door-zone electronics that experience wide thermal swings and humidity. Compared to 8-bit S08 predecessors, the 16-bit S12 core allows anti-pinch algorithms with higher ADC sampling rates within the same current budget.
Recommended
HVAC Control Node
HVAC control nodes leverage the S9S12G64F0MLH's 12-channel 10-bit ADC to read multiple temperature sensors (cabin, evaporator, ambient, blend-door position) with one MCU, eliminating external ADC ICs. The 4 KB RAM is sufficient for PID-based climate control loops and the 64 KB Flash holds lookup tables for blower-ramp profiles and humidity-compensation curves. The CAN interface links the HVAC node to the rest of the vehicle network for remote-start preconditioning and over-the-air climate settings. Operating across -40 C to +125 C with AEC-Q100 qualification, the device tolerates the high-temperature under-dash environment during summer peak. The HCS12 deterministic core is preferred over 32-bit Cortex-M parts when firmware certification costs (ISO 26262) are a concern at this node level.
Recommended
CAN/LIN Gateway Edge Node
Gateway edge nodes bridging CAN and LIN subnets can use the S9S12G64F0MLH's integrated CAN 2.0A/B and LIN 2.x/SAE J2602 controllers without external protocol ICs, reducing both BOM cost and PCB area. The 64 KB Flash is sufficient for gateway filtering, signal-routing tables, and diagnostic UDS (Unified Diagnostic Services) handlers at the network edge. The 25 MHz bus clock handles message arbitration latency well within automotive gateway cycle budgets of 10 ms. With 54 GPIO, the MCU can also drive status LEDs and provide local fault-output pins without an external I/O expander. AEC-Q100 qualification is mandatory for OEM gateway modules that sit on the backbone CAN bus under the dashboard.
Recommended
Industrial Sensor Module
Industrial sensor modules benefit from the S9S12G64F0MLH's automotive-grade -40 C to +125 C temperature rating and EMC robustness, which translate well to harsh factory and outdoor environments. The 12-channel 10-bit ADC reads multiple analog sensor inputs (pressure, temperature, strain-gauge bridges) without external multiplexer, and the 64 KB Flash hosts sensor-fusion firmware plus Modbus/CANopen protocols. The 25 MHz bus clock enables deterministic sampling at 1 kHz rates with margin for digital filtering. The 3.13 V to 5.5 V supply range accommodates both 3.3 V and 5 V industrial sensor designs. Compared to typical industrial-only MCUs, the automotive qualification provides extra ESD and latch-up margin that field-deployed sensor modules often need.
Recommended
Instrument Cluster Slave
Instrument cluster slaves can use the S9S12G64F0MLH as a secondary processor for telltale driving, indicator lamps, and sub-display scanning, while the primary cluster graphics processor handles the main display. The 54 GPIO count directly drives dozens of LEDs and segment indicators without external LED drivers, and the 12-bit ADC reads fuel-level and temperature-gauge sensors with sufficient resolution. The 64 KB Flash stores cluster-variant firmware for different OEM markets without requiring re-flash for regional changes. Operating at 25 MHz, the MCU updates telltales at >100 Hz with no perceptible lag, important for turn-signal and high-beam indicators. The AEC-Q100 qualification satisfies automotive cluster reliability standards without additional up-screening.
Recommended
Recommended Products Summary
Engineering reference data for S9S12G64F0MLH — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S9S12G128F0MLH | S9S12G96F0MLH | S9S12G48F0MLH | S9S12P64J0MLH | S9S12HY64J0MLH | MC9S12P64CLH | MC9S12P64VLH | S912XET512BMAGR |
|---|---|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-LQFP (10x10) | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same |
| Flash Size | 64 KB | 128 KB | 96 KB | 48 KB | 64 KB | 64 KB | 64 KB | 64 KB | 512 KB |
| RAM Size | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 8 KB | 4 KB | 4 KB | 32 KB |
| EEPROM Size | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 4 KB |
| Maximum Bus Clock | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 33 MHz | 50 MHz | 33 MHz | 33 MHz | 50 MHz |
| Supply Voltage | 3.13 V to 5.5 V | 3.13 V to 5.5 V | 3.13 V to 5.5 V | 3.13 V to 5.5 V | 3.13 V to 5.5 V | 3.13 V to 5.5 V | 3.13 V to 5.5 V | 3.13 V to 5.5 V | 3.13 V to 5.5 V |
| AEC-Q100 Grade | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C | -40 C to +125 C |
Key Differentiators
- Same-family Flash-upgrade path with identical pinout (vs S9S12G48F0MLH)
- Better CAN/LIN peripheral integration than S08 predecessors (vs MC9S08DZ60F1CLH)
- Lower unit cost than higher-Flash same-package variants (vs S9S12G128F0MLH)
- Deterministic 16-bit core vs Cortex-M alternatives (vs STM32H563ZIT6)
Design Notes
Place a 100 nF X7R ceramic decoupling capacitor within 2 mm of every VDD/VSS pair on the S9S12G64F0MLH to meet the S12G family EMC target. Add a 10 uF bulk ceramic or tantalum at the regulator output to suppress transient loads from CAN/LIN drivers. The on-chip 5 V regulator (VDDR/VSS) supplying internal logic needs its own 100 nF plus 4.7 uF bulk; under-voltage on VDDR will cause unpredictable BDM behavior during debugging.
The 64-LQFP (10x10) package has an estimated theta_JA near 50 C/W on a 4-layer JEDEC test board (estimate; refer to S12G family thermal appendix). At 25 MHz bus clock and 5 V supply, the S9S12G64F0MLH typically draws under 30 mA active and <2 mA stop, so self-heating rarely exceeds 5 C rise above ambient in normal automotive under-dash mounting. Avoid placing the device directly above heat sources like linear regulators; use a thermal relief pattern on the LQFP exposed pad to keep junction temperature below 150 C at +125 C ambient.
Route the CANH and CANL differential pair as a 100 ohm twisted pair with no stubs, keep the bus length under 1 m, and place the TJA104x transceiver within 25 mm of the MCU CAN pins. The EXTAL/XTAL traces should be kept short (<10 mm) and guarded by ground pour; do not route signal traces under the crystal to avoid capacitive loading. The BKGD and RESET pins require careful routing; keep the BDM connector within 50 mm to avoid signal reflections during debug.
Do not exceed the absolute maximum supply voltage of 6 V on any VDD pin or you will permanently damage the S9S12G64F0MLH. Ensure the MODC pin is pulled high through a 4.7 kohm resistor to enter single-chip normal mode; leaving MODC floating at startup will put the MCU in special test mode. The internal oscillator is calibrated to 1 percent but may drift over temperature; for CAN nodes, verify the oscillator meets the 1.58 percent CAN clock tolerance across the full -40 C to +125 C range before relying on it without a crystal.
Compliance Information
AEC-Q100 qualified for automotive applications per NXP S12G family datasheet. RoHS and REACH compliant. Halogen-free status not explicitly stated in the verified web data.