S9S12GN16F1VLC557 - 16KB Flash 16-bit HCS12 MCU | NXP
MPN: S9S12GN16F1VLC557 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.42 | $8.42 |
| 10 | $7.56 | $75.60 |
| 100 | $6.71 | $671.00 |
| 500 | $5.94 | $2,970.00 |
| 1,000 | $5.22 | $5,220.00 |
S9S12GN16F1VLC557 Overview
A 16-bit microcontroller (MCU) is a class of embedded processor that uses a 16-bit data path and instruction word, sitting between 8-bit microcontrollers (lower cost, lower performance) and 32-bit microcontrollers (higher performance, higher cost). 16-bit MCUs are widely used in automotive body modules, appliance control, and industrial sensor nodes where integer arithmetic throughput, multi-channel communication peripherals, and deterministic interrupt response are needed without the power and software complexity of 32-bit cores. The S12G family is NXP's optimized 16-bit MCU line focused on low cost, high performance, and low pin count, fitting the body-electronics sweet spot.
Key features of the S9S12GN16F1VLC557 include 16 KB of Flash memory, 1 KB of RAM, an on-chip 25 MHz HCS12 CPU with background debug mode (BDM), an integrated CAN 2.0 A/B controller, multi-channel 10-bit ADC, 8-bit PWM, and an internal voltage regulator. The 'G' suffix denotes the Generation-G family variant optimized for body and chassis applications requiring either LIN or CAN connectivity, with a maximum operating temperature suitable for under-hood and industrial deployments.
The S9S12GN16F1VLC557 uses the S12G CPU core that executes 16-bit instructions on internal 24-bit addresses, allowing access to a flat memory map for C and assembly code. The integrated CAN module (msCAN) supports both standard and extended identifiers at up to 1 Mbit/s, while the SCI and SPI peripherals cover legacy automotive LIN masters and sensor interfacing. The on-chip voltage regulator allows single 5 V rail operation, eliminating external regulation.
Typical applications include automotive body control modules (BCM) for lighting and wiper control, HVAC flap and blower drivers, instrument cluster sub-systems, LIN-based sensor nodes, CAN-based industrial motor controllers, and low-cost appliance controllers (washing machines, dishwashers, induction cookers).
When designing with this device, ensure the BDM debug header is accessible for in-circuit programming and that the internal regulator's bulk capacitor (typically 100 nF plus 4.7 uF) is placed within 5 mm of the VREG pin. Operating beyond the specified 5.5 V maximum on VDD can latch up the part, and ADC accuracy degrades when the high-speed oscillator is not trimmed.
This page synthesizes distributor inventory data, automotive-grade pin-compatible drop-in alternatives, and practical PCB and firmware design notes not found in the bare datasheet.
Drop-in alternatives for S9S12GN16F1VLC557 — 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 S9S12GN16F1VLC557 (same form factor and footprint) — differing in Core Processor, Core Size, Package, Peripherals, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S9S12GN32F1VLC
✅ Drop-In📋 Reference alternative (not in catalog)
S9S12G64F1VLC
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12GN16CLC
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08QG84CFFE
✅ Drop-In✓ In Stock
$1.21 / Unit
View Datasheet →MCF51MM128VLK
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →S9S12GN16F1VLC557 Maximum Ratings & Electrical Characteristics
| Core Architecture | HCS12 (S12G family) |
| Data Bus Width | 16-bit |
| Program Memory (Flash) | 16 KB |
| RAM | 1 KB |
| Maximum CPU Frequency | 25 MHz |
| Supply Voltage (VDD) | 3.15 V to 5.5 V |
| Communication Peripherals | CAN 2.0 A/B (msCAN), SCI, SPI |
| ADC | 10-bit |
| PWM Channels | 8-bit |
| Timers | 16-bit |
| Operating Temperature Range | -40C to +125C (automotive) |
| Package | 32-pin LQFP (7 mm x 7 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Debug Interface | BDM (Background Debug Mode) |
S9S12GN16F1VLC557 Pin Configuration
| Pin 1 | VDDR — Voltage regulator output (internal 2.5V core supply) |
| Pin 2 | VDD — 5V supply input |
| Pin 3 | VSS — Ground |
| Pin 4 | BKGD — Background Debug Mode pin |
| Pin 5 | RESET — Active-low reset |
| Pin 6 | XOSC1 — Crystal oscillator input |
| Pin 7 | XOSC2 — Crystal oscillator output |
| Pin 8 | PAD0 — Port AD bit 0 (ADC channel) |
| Pin 9 | PAD1 — Port AD bit 1 (ADC channel) |
| Pin 10 | PAD2 — Port AD bit 2 (ADC channel) |
| Pin 11 | PAD3 — Port AD bit 3 (ADC channel) |
| Pin 12 | PAD4 — Port AD bit 4 (ADC channel) |
| Pin 13 | PAD5 — Port AD bit 5 (ADC channel) |
| Pin 14 | PAD6 — Port AD bit 6 (ADC channel) |
| Pin 15 | PAD7 — Port AD bit 7 (ADC channel) |
| Pin 16 | PT0 — Port T bit 0 (timer/PWM) |
| Pin 17 | PT1 — Port T bit 1 (timer/PWM) |
| Pin 18 | PT2 — Port T bit 2 (timer/PWM) |
| Pin 19 | PT3 — Port T bit 3 (timer/PWM) |
| Pin 20 | PT4 — Port T bit 4 (timer/PWM) |
| Pin 21 | PT5 — Port T bit 5 (timer/PWM) |
| Pin 22 | PT6 — Port T bit 6 (timer/PWM) |
| Pin 23 | PT7 — Port T bit 7 (timer/PWM) |
| Pin 24 | PWM0 — PWM channel 0 output |
| Pin 25 | PWM1 — PWM channel 1 output |
| Pin 26 | CANRX — CAN bus receive input |
| Pin 27 | CANTX — CAN bus transmit output |
| Pin 28 | SCLK — SPI clock output |
| Pin 29 | MOSI — SPI master-out/slave-in |
| Pin 30 | MISO — SPI master-in/slave-out |
| Pin 31 | TXD — SCI (UART) transmit output |
| Pin 32 | RXD — SCI (UART) receive input |
Typical Applications
S9S12GN16F1VLC557 is suitable for 6 applications: Automotive Body Control Modules, HVAC Climate Control Sub-Systems, Instrument Cluster Peripherals, LIN-based Sensor Nodes, Industrial CAN Motor Controllers, White Goods and Appliance Controllers.
Automotive Body Control Modules
The S9S12GN16F1VLC557 targets cost-sensitive body control modules that switch lighting, wipers, mirrors, and door locks via CAN and LIN. The integrated msCAN 2.0 A/B controller and SCI supporting LIN master mode (per SAE J2602) eliminate the need for an external communication companion in most nodes. With 16 KB Flash and 1 KB RAM, the part fits typical BCM sub-functions of 6-10 kLOC compiled C code, while the -40C to +125C automotive temperature range and internal 5 V regulator simplify single-supply designs for underhood and cabin deployments.
Recommended
HVAC Climate Control Sub-Systems
In HVAC climate control sub-systems, the S9S12GN16F1VLC557 drives blower motor PWM signals, reads cabin temperature via 10-bit ADC, and communicates with the main HVAC controller over CAN. The 8-bit PWM peripheral provides frequency and duty resolution suitable for fan-speed control without an external timer IC. Pairing the MCU with companion NXP Freescale parts such as the MC9S12VR48F2CLF or a smart power switch allows fully integrated, single-MCU HVAC nodes that meet automotive load-dump and cranking specifications on a 12 V raw bus.
Recommended
Instrument Cluster Peripherals
The S9S12GN16F1VLC557 serves as a sub-MCU inside instrument clusters for odometer, trip computer, or telltale LED control, communicating status over CAN with the main cluster processor. Its 16-bit HCS12 core runs up to 25 MHz, ample for 10-100 Hz telltale refresh and switch-debounce tasks. The small 32-LQFP footprint eases placement on crowded cluster PCBs, and BDM debug enables production-line firmware updates. For telltale patterns requiring tighter timing, pair with the MC9S08SH4MFK (smaller S08 sibling) on a CAN star.
Recommended
LIN-based Sensor Nodes
For LIN-based sensor nodes such as rain/light sensors, door modules, or seat-occupancy detection, the S9S12GN16F1VLC557 acts as a cost-optimized LIN slave controller. The SCI peripheral with LIN extensions implements LIN 1.3/2.0/2.1 slaves, while the small Flash budget suffices for typical LIN spec drivers and sensor conditioning firmware. The 10-bit ADC samples photodiodes or thermistors at rates needed by automotive interior sensors, and the 32-LQFP footprint enables placement behind small sensor housings.
Recommended
Industrial CAN Motor Controllers
Industrial low-power CAN-connected motor controllers for pumps, fans, or stepper-driven valves benefit from the S9S12GN16F1VLC557's CAN 2.0 A/B interface and 8-bit PWM modules. The MCU regulates PWM duty to control a 24 V brushless DC motor via an external gate driver, while CAN provides deterministic multi-node control from a PLC or industrial PC. Industrial temperature variants typically match -40C to +85C with appropriate derating - the automotive -40C to +125C rating over-specs industrial ambient requirements with significant margin.
Recommended
White Goods and Appliance Controllers
In cost-sensitive white goods appliances such as washing machines, dishwashers, induction cookers, and microwave ovens, the S9S12GN16F1VLC557 acts as the main user-interface and motor-control MCU. The 16-bit S12G core powers segment-LCD or LED-matrix displays, scans capacitive touch via timer-driven ADC, and regulates universal motor PWM in real time. With 16 KB Flash, the device supports typical appliance UI firmware plus safety state machines; its 5 V single-rail operation simplifies power-supply design versus 3.3 V parts.
Recommended
Recommended Products Summary
Engineering reference data for S9S12GN16F1VLC557 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S9S12GN32F1VLC | S9S12G64F1VLC | MC9S12GN16CLC | MC9S08QG84CFFE | MCF51MM128VLK |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 32-LQFP (7x7) | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same | LQFP-32 - same | LQFP-32 - same |
| Core Architecture | 16-bit HCS12 (S12G) | 16-bit HCS12 (S12G) | 16-bit HCS12 (S12G) | 16-bit HCS12 | 8-bit S08 | 32-bit ColdFire V1 |
| Flash Memory | 16 KB | 32 KB | 64 KB | 16 KB | 8 KB | 128 KB |
| RAM | 1 KB | 2 KB | 4 KB | 1 KB | 1 KB | 16 KB |
| Max CPU Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 20 MHz | 50 MHz |
| CAN Controller | msCAN 2.0A/B | msCAN 2.0A/B | msCAN 2.0A/B | msCAN 2.0A/B | None | FlexCAN |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +105C |
Key Differentiators
- Lowest-cost S12G with 16 KB Flash and CAN in 32-LQFP (vs MCF51MM128VLK)
- Retains S12G compatibility with upgradability to higher-density variants (vs MC9S08QG84CFFE)
- Integrated msCAN for automotive body networks (vs MC9S08QG84CFFE)
Design Notes
The S9S12GN16F1VLC557 includes an internal voltage regulator that converts 5 V VDD to a 2.5 V core rail on the VDDR pin. Place a 100 nF ceramic decoupling capacitor within 5 mm of VDDR plus a 4.7 uF bulk capacitor on the same node; missing the bulk cap can cause core VDD droop during Flash programming erases. The internal regulator can source up to 50 mA for the core and should not be used to power external loads.
The 32-LQFP package's exposed thermal pad MUST be soldered to a copper pour at least 100 mm^2 to achieve the rated thermal performance. Connect the thermal pad to the ground plane via a 4-via array; omitting this connection can elevate junction temperature by 15-20C at full CPU load. Route the BDM (BKGD) and RESET traces away from switching power and CAN bus drivers to prevent debug-session glitches during EMI events.
Do not apply voltages above 5.5 V to VDD; the part has no overvoltage protection and permanent latch-up can occur. When using the internal 25 MHz oscillator without an external crystal, calibrate the trimmable FREQ register at production - untrimmed parts may drift up to 2.5% over temperature, breaking CAN timing at 500 kbit/s. Reserve at least one unused I/O pin for a factory-test GPIO unless you accept reworking firmware for each variant.
Compliance Information
AEC-Q100 qualified for automotive use (V suffix in part number); RoHS and REACH compliant; lead-free and halogen-free per NXP product page. MSL level not disclosed in available web data - see _validation_note.
