S9S08RN16W2MLFR - 16KB 20MHz Automotive 8-Bit MCU | NXP
MPN: S9S08RN16W2MLFR ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
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| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
S9S08RN16W2MLFR Overview
What is an automotive 8-bit microcontroller? An MCU is a semiconductor that integrates a processor core, program memory, data memory, peripherals, and I/O on one device. An 8-bit MCU executes compact embedded-control instructions efficiently and belongs to the broader embedded processor and microcontroller hierarchy. The S08RN family targets cost-sensitive systems ranging from simple 2KB-Flash devices in 8-pin packages to feature-rich derivatives with 60KB Flash in 64-pin packages.
The headline features are 16KB of 16K x 8 Flash, operation up to 20 MHz, and an extended -40C to +125C temperature range. Its 39 I/O pins provide substantial external interface capacity for sensing, actuator control, communications, and diagnostics. Verified connectivity includes I2C, LINbus, SPI, and UART/USART, allowing the device to bridge sensors and external controllers without relying on discrete interface devices.
S08RN devices combine an 8-bit CPU with integrated embedded-control peripherals. The listing specifically identifies low-voltage detection, power-on reset, pulse-width modulation, and a watchdog timer. PWM supports proportional actuator or power-control tasks, while the watchdog and reset functions improve recovery behavior. The 256-byte EEPROM provides nonvolatile data storage for calibration, configuration, counters, or diagnostic records, although endurance and write timing require confirmation from the manufacturer documentation.
Typical uses include body and comfort modules, sensor interfaces, small motor controllers, automotive communication nodes, instrumentation, and industrial embedded controls. LINbus is particularly relevant to vehicle networks, while UART/USART, SPI, and I2C support sensors, external memory, transceivers, and supervisory components. The 48-LQFP package also exposes substantially more I/O than smaller S08RN packages, making it suitable for designs that need several peripheral functions without moving to a larger 8-bit device.
Engineers should verify the exact pin multiplexing, clock configuration, memory map, and electrical limits in the official NXP datasheet before layout release. The 7 x 7 mm LQFP has exposed leads on all four sides and benefits from adequate solder mask clearance and thermal-aware placement. Automotive production decisions must also verify qualification, traceability, software support, and supply-chain documentation using controlled NXP records.
This page consolidates verified distributor specifications, automotive and interface positioning, procurement sources, and selection considerations. It distinguishes confirmed public data from parameters that still require manufacturer documentation, helping engineers evaluate the S9S08RN16W2MLFR without treating inferred values as production specifications.
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| Core Processor | S08 8-bit |
| Maximum Clock Frequency | 20 MHz |
| Program Memory Size | 16 KB (16K x 8) |
| Program Memory Type | Flash |
| EEPROM Size | 256 x 8 bytes |
| Number of I/O Pins | 39 |
| Operating Temperature Range | -40C to +125C |
| Automotive Qualification | Automotive Qualified |
| Package | 48-LQFP (7 x 7 mm) |
| Mounting Type | Surface Mount |
| Series | S08RN |
| Connectivity | I2C, LINbus, SPI, UART/USART |
| Peripherals | Low-Voltage Detection, Power-On Reset, PWM, Watchdog Timer |
| Core Width | 8-bit |
| Flash Organization | 16K x 8 bits |
S9S08RN16W2MLFR 48-lqfp (7 x 7 mm) Pin Configuration Guide
Pin configuration for S9S08RN16W2MLFR (48-lqfp (7 x 7 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 S9S08RN16W2MLFR.
Refer to the datasheet for full pin configuration.
Typical Applications
S9S08RN16W2MLFR is suitable for 6 applications: Automotive LINbus Control Node, Body Control Module, Industrial Sensor Aggregator, PWM Actuator Controller, Automotive Sensor and Serial Gateway, Instrumentation and Diagnostics Module.
Automotive LINbus Control Node
The S9S08RN16W2MLFR fits a LINbus control node because the verified component listing explicitly includes LINbus, a 20 MHz S08 core, and 16KB Flash. Firmware can combine LIN communication with control logic, diagnostics, watchdog supervision, and low-voltage monitoring without relying on an external communications processor. Its -40C to +125C range and automotive-qualified designation align with harsh vehicle environments, while 39 I/O pins allow switches, inputs, indicators, and sensors to share the controller. A LIN transceiver and suitable protection network remain external design requirements.
Recommended
Body Control Module
A body-control module can use the S9S08RN16W2MLFR for central coordination of digital inputs, indicator outputs, switches, and vehicle-network traffic. Its 39 I/O pins provide more interface capacity than a small 8-pin or 16-pin controller, and the 16KB Flash offers room for protocol handling, debounce logic, diagnostics, and state-machine firmware. The verified -40C to +125C operating range suits harsh cabin or body environments. Engineers must still assign each signal to a correct multiplexed pin and implement suitable output-driver, load-dump, and transient protection externally.
Recommended
Industrial Sensor Aggregator
The S9S08RN16W2MLFR can aggregate data from multiple sensors when an installation needs I2C, SPI, UART/USART, or LINbus alongside local logic. The 20 MHz S08 core supports responsive peripheral handling, and the 39 I/O pins can support discrete digital channels, status signals, and actuator commands. Although the part is automotive qualified, its -40C to +125C range also makes it a candidate for demanding industrial equipment after application-specific qualification. Interface voltage levels, timing, grounding, and peripheral multiplexing must be verified before schematic release.
Recommended
PWM Actuator Controller
The S9S08RN16W2MLFR is suitable for a PWM-based actuator controller because PWM is explicitly listed among its peripherals. Its 16KB Flash can hold sequencing logic and fault handling, while the 20 MHz core supports time-sensitive control tasks and the watchdog can help recover from software faults. The 39 I/O pins allow control inputs, position feedback, diagnostics, and protected driver-command outputs to share one MCU. Actual PWM resolution, center or edge alignment, timer channels, and electrical drive limits are not supplied and must be confirmed in the manufacturer documentation.
Recommended
Automotive Sensor and Serial Gateway
The combination of I2C, SPI, UART/USART, and LINbus makes S9S08RN16W2MLFR a candidate for a compact serial gateway that translates among vehicle-network traffic and local sensors or actuators. Sixteen kilobytes of Flash can accommodate interface drivers and routing logic, while 39 I/O pins support discrete control and status paths. The automotive-qualified description and -40C to +125C range strengthen its suitability for vehicle electronics. It does not include a physical LIN transceiver, and protocol timing, bus fault handling, wake behavior, and pin multiplexing must be implemented and validated in the system design.
Recommended
Instrumentation and Diagnostics Module
S9S08RN16W2MLFR can support an instrumentation module that gathers sensor inputs, drives local indicators, records diagnostic events, and communicates over a serial bus. Its 256 x 8 bytes of EEPROM can retain configuration or diagnostic values, while power-on reset and low-voltage detection support controlled startup and rail monitoring. The 20 MHz core provides headroom for time-based tasks at 16KB Flash. Engineers must verify EEPROM endurance and write timing, confirm the reset and low-voltage thresholds, and ensure that any externally driven signals meet the device's absolute-maximum and electrical characteristics.
Recommended
Recommended Products Summary
Engineering reference data for S9S08RN16W2MLFR — comparison, design guidance, and compliance information.
Selection Guide
Design Notes
Treat the 48-LQFP footprint as an escape-routing and assembly constraint rather than a compact land pattern. Confirm pin pitch, pad dimensions, solder-mask clearance, paste volume, and courtyard against the current NXP package drawing. Because the verified snippets do not provide the complete pin table, assign nets only after checking power pins, programming signals, reset, clock options, communications, and all alternate functions in the official datasheet.
Supply-voltage limits, external component recommendations, and decoupling values were not present in the verified snippets. Before power-up, obtain the NXP recommended operating conditions and connection guidance, then size local bypass capacitors for the intended clock and peripheral configuration. Keep high-current return paths compact and separate sensitive communication returns where practical. Estimated power consumption cannot be produced without the actual core clock, enabled peripherals, I/O activity, and supply voltage.
Do not infer pin functionality from the 39-I/O count. A 48-pin package can include dedicated supply, ground, reset, clock, programming, and alternate-function pins, and one physical package pin may multiplex several peripherals. Verify LINbus, I2C, SPI, UART/USART, PWM, watchdog, and low-voltage detection assignments in the NXP pin connection table. Also confirm that 16KB Flash, 256 x 8 bytes of EEPROM, and the 20 MHz clock satisfy the application's firmware and real-time requirements.
Compliance Information
The verified distributor descriptions explicitly identify the MCU as automotive qualified, so aec_q100 is recorded as qualified. No verified extractable RoHS, REACH, lead-free, halogen-free, or conflict-minerals statement was provided. Obtain current NXP documentation for the exact orderable part before making a compliance claim.