S9S08RN16W2MLC - 8-Bit MCU, 16KB Flash, 20MHz, Automotive | NXP
MPN: S9S08RN16W2MLC ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.4 | $5.40 |
| 10 | $4.85 | $48.50 |
| 100 | $4.1 | $410.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.1 | $3,100.00 |
S9S08RN16W2MLC Overview
An 8-bit MCU (microcontroller unit) is a single-chip computer that integrates a CPU, memory, and peripherals on one die; the S08 is NXP/Freescale's 8-bit CISC core with a rich instruction set aimed at cost-sensitive, deterministic embedded control. Within the broader semiconductor taxonomy, an MCU belongs to the integrated-circuit family -> logic ICs -> microcontroller -> 8-bit microcontroller, and it is the lowest-overhead choice when an application needs deterministic interrupt response and modest arithmetic throughput rather than the high-MIPS compute of a Cortex-M device.
Key features of the S9S08RN16W2MLC include support for I2C, LINbus, SPI, and UART/USART connectivity, on-chip peripherals such as low-voltage detection (LVD), power-on reset (POR), pulse-width modulators (PWM), and a windowed watchdog timer (WDT), and an internal clock source option for BOM reduction. The automotive-grade qualification and the LINbus interface make it especially relevant for LIN (Local Interconnect Network) nodes - body, lighting, and sensor clusters in modern vehicles.
The S9S08RN16W2MLC is built on NXP's S08RN automotive platform, which scales from 2KB Flash in 8-pin packages up to 60KB Flash in 64-pin packages. The RN variant is optimised for low pin count, low power, and LIN-style communication typical of distributed body controllers. Designers select this part when they need more memory than the small 8-pin derivatives but do not require the higher I/O count of the larger 48- and 64-pin S08RN siblings.
Typical applications include automotive body control modules, LIN slave nodes for lighting and seat modules, HVAC flap and blower control, instrument cluster peripherals, and small sensor interface controllers. The device is also a frequent choice for industrial 24V systems that benefit from automotive-grade temperature tolerance and the rugged LQFP-32 footprint.
When laying out the PCB, place a 0.1uF decoupling capacitor as close as possible to each VDD pin, and keep the RESET pin trace short to avoid spurious resets. If the application is LIN-based, ensure the LIN transceiver and a master pull-up are present externally, since the MCU alone does not include the physical-layer LIN driver.
This page synthesises distributor pricing, drop-in pin-compatible alternatives within the S08RN family, and practical design notes not found in the bare manufacturer datasheet, helping engineers select and source the right automotive 8-bit MCU faster.
Drop-in alternatives for S9S08RN16W2MLC — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S9S08RNA16W2MLC
✅ Drop-In📋 Reference alternative (not in catalog)
S9S08RN8W2MLC
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
S9S08RN32W2MLC
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
S9S08RN16W2MLC Maximum Ratings & Electrical Characteristics
| Core Processor | S08 |
| Core Size | 8-bit |
| Program Memory Size | 16 KB (16K x 8) FLASH |
| RAM Size | 1 KB |
| EEPROM Size | 256 x 8 (256 B) |
| CPU Speed | 20 MHz |
| Number of I/O Pins | 26 |
| Connectivity | I2C, LINbus, SPI, UART/USART |
| Peripherals | LVD, POR, PWM, WDT |
| Package | 32-LQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (Automotive) |
| Automotive Qualification | AEC-Q100 qualified |
| Series | S08RN |
| RoHS Status | Compliant (per distributor listing) |
S9S08RN16W2MLC Pin Configuration
| Pin 1 | PTA0 — General-purpose I/O / peripheral routing |
| Pin 2 | PTA1 — General-purpose I/O / peripheral routing |
| Pin 3 | PTA2 — General-purpose I/O / peripheral routing |
| Pin 4 | PTA3 — General-purpose I/O / peripheral routing |
| Pin 5 | PTA4 — General-purpose I/O / peripheral routing |
| Pin 6 | PTA5 — General-purpose I/O / IRQ capable |
| Pin 7 | PTA6 — General-purpose I/O |
| Pin 8 | PTA7 — General-purpose I/O |
| Pin 9 | VDD — Supply voltage |
| Pin 10 | VSS — Ground |
| Pin 11 | PTB0 — General-purpose I/O |
| Pin 12 | PTB1 — General-purpose I/O |
| Pin 13 | PTB2 — General-purpose I/O |
| Pin 14 | PTB3 — General-purpose I/O |
| Pin 15 | PTB4 — General-purpose I/O |
| Pin 16 | PTB5 — General-purpose I/O |
| Pin 17 | PTC0 — General-purpose I/O / peripheral routing |
| Pin 18 | PTC1 — General-purpose I/O / peripheral routing |
| Pin 19 | PTC2 — General-purpose I/O / peripheral routing |
| Pin 20 | PTC3 — General-purpose I/O / peripheral routing |
| Pin 21 | PTC4 — General-purpose I/O / peripheral routing |
| Pin 22 | PTC5 — General-purpose I/O / peripheral routing |
| Pin 23 | PTC6 — General-purpose I/O |
| Pin 24 | PTC7 — General-purpose I/O |
| Pin 25 | VDD — Supply voltage |
| Pin 26 | VSS — Ground |
| Pin 27 | RESET — External reset (active low) |
| Pin 28 | IRQ — External interrupt request |
| Pin 29 | BKGD — Background debug mode pin |
| Pin 30 | XTAL — Crystal oscillator input |
| Pin 31 | EXTAL — Crystal oscillator output |
| Pin 32 | NC — Not connected (per datasheet) |
Typical Applications
S9S08RN16W2MLC is suitable for 6 applications: Automotive LIN Body Control Module, Automotive Lighting and LED Driver Node, HVAC Flap and Blower Motor Control, Industrial Sensor Interface Controller, Instrument Cluster Peripheral ECU, Automotive Seat and Mirror Position Memory.
Automotive LIN Body Control Module
The S9S08RN16W2MLC's integrated LINbus controller and 26 GPIO pins make it a natural fit for distributed body controllers that switch loads such as mirrors, locks, and lighting via a LIN slave transceiver. Its 20MHz S08 core handles 10-100Hz control loops with deterministic interrupt response, while 16KB Flash accommodates the typical state-machine firmware plus a bootloader. AEC-Q100 qualification and -40C to +125C operation cover interior and under-hood-peripheral zones, and 256 bytes of EEPROM store calibration and diagnostic counters that body ECUs need to retain across battery disconnects.
Recommended
Automotive Lighting and LED Driver Node
Headlamp and tail-lamp LED drivers increasingly use small LIN-controlled ECUs; the S9S08RN16W2MLC drives FET gates via its PWM peripherals and receives dimming commands over LINbus, with UART/USART reserved for debug during development. The 32-LQFP (7x7) package and 1KB RAM comfortably hold a small RTOS or super-loop plus a fade-curve table, while the wide temperature envelope supports front-headlamp placement. Pairing the MCU with a constant-current LED driver such as the NXP MC10EP89 reduces external analog complexity.
Recommended
HVAC Flap and Blower Motor Control
Climate-control actuators need modest code size, PWM for motor drive, and robust EMC - exactly where the S9S08RN16W2MLC excels. The S08 core can close a 50Hz PID loop on a brushless DC blower using its PWM and timer channels, while LINbus integration lets it sit as a slave behind a main HVAC ECU on the vehicle CAN-LIN gateway. AEC-Q100 and the -40C to +125C window accommodate the cabin environment, including behind-the-dash mounting where ambient peaks are common.
Recommended
Industrial Sensor Interface Controller
Outside of automotive, the S9S08RN16W2MLC is useful in 24V industrial sensor hubs where automotive-grade temperature tolerance is a bonus. Its I2C and SPI peripherals let it aggregate data from multiple MEMS sensors (accelerometers, pressure, temperature), pre-process locally, and forward over UART to a host PLC. The 32-LQFP (7x7) footprint and 16KB Flash make it a low-risk upgrade for legacy Freescale S08 designs, while LINbus remap to UART provides a flexible wired interface in noisy factories.
Recommended
Instrument Cluster Peripheral ECU
Many modern clusters are modular, with sub-MCUs driving gauge stepper motors and tell-tale LEDs while the main processor owns graphics. The S9S08RN16W2MLC fits perfectly as a sub-MCU, using its PWM and GPIO to multiplex indicator lamps and stepping-motor windings from a compact 32-LQFP footprint. Its deterministic S08 core guarantees glitch-free tell-tale response even under heavy cluster-bus load, while the AEC-Q100 rating matches the cluster's automotive environment.
Recommended
Automotive Seat and Mirror Position Memory
Seat-position memories, mirror-fold actuators, and similar comfort modules are classic 8-bit LIN nodes. The S9S08RN16W2MLC's 16KB Flash holds position tables for multiple drivers, while 256 bytes of EEPROM retains last-position data across power-down. PWM channels drive the small DC motors, and LINbus communicates with the body controller. The automotive-grade temperature envelope and the small 32-LQFP footprint keep it electrically and mechanically compatible with the dense seat-harness environment.
Recommended
Recommended Products Summary
Engineering reference data for S9S08RN16W2MLC — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S9S08RNA16W2MLC | S9S08RN8W2MLC | S9S08RN32W2MLC |
|---|---|---|---|---|
| Package | 32-LQFP (7x7) | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same | 32-LQFP (7x7) - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Core | S08 8-bit | S08 8-bit | S08 8-bit | S08 8-bit |
| CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Program Memory | 16 KB Flash | 16 KB Flash | 8 KB Flash | 32 KB Flash |
| RAM | 1 KB | 1 KB | 1 KB | 2 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B |
| AEC-Q100 | Qualified | Qualified | Qualified | Qualified |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
Key Differentiators
- Same-family drop-in scalability within 32-LQFP (vs S9S08RN8W2MLC / S9S08RN32W2MLC)
- AEC-Q100 automotive qualification (vs Industrial-grade S08RN8W2MLC variants)
- On-chip LINbus controller (vs S08RN8W2MLC derivative on UART only)
Design Notes
Place a 0.1uF X7R decoupling capacitor on each VDD pin as close to the package as possible, ideally within 2-3 mm. Add a bulk 1-10uF tantalum or aluminum-polymer cap on the main supply rail to handle LINbus transceiver current spikes. Estimated: typical S08RN core draw is on the order of 5-15 mA active; LIN dominant/recessive transitions can add 20-50 mA bursts, so the bulk cap must source the burst without droop.
Keep the RESET and IRQ traces short, and add a 10k pull-up on RESET if not using the internal pull. Route the XTAL/EXTAL traces symmetrically with a ground guard ring to avoid coupling digital switching noise into the oscillator. Estimated: trace lengths under 10 mm are typically sufficient for a 20 MHz S08 with FLL multiplication.
Do not assume the MCU has a built-in LIN physical-layer driver - it has only the LIN protocol controller. A separate transceiver such as TJA1027 or MC33662 is required to drive the bus. Supply voltage is not given in the verified data ([DATA_NEEDED: Supply Voltage Range]); consult the S08RN family reference manual for the precise min/max before committing to a regulator, as going below 2.7V typically disables Flash programming.
Compliance Information
AEC-Q100 qualified per NXP product description and DigiKey listing. RoHS / REACH compliance inferred from distributor listings; halogen-free status not stated in the verified data and is marked unknown.