NXP Semiconductors S9S08RNA16W2MLCR

Overview

S9S08RNA16W2MLCR from NXP Semiconductors (formerly Freescale) is an automotive-grade 8-bit S08 microcontroller with 16 KB flash, 256-byte EEPROM with ECC, and 2 KB RAM, operating at up to 20 MHz bus frequency across –40 °C to 125 °C. It integrates ADC (12-channel/12-bit in 48-pin variant), dual FTM timers, dual SCI/UART, I²C, SPI, TSI touch interface, and on-chip debug via single-wire BDM - deployed in engine control modules, body electronics, and HVAC actuators.

For engineers reviewing the S9S08RNA16W2MLCR datasheet, S9S08RNA16W2MLCR pinout, S9S08RNA16W2MLCR application, or S9S08RNA16W2MLCR equivalent, key selection considerations include its -40 °C to 125 °C extended temperature rating, flash/ECC-protected EEPROM for safety-critical data logging, stop3 mode current of 4.6 µA (VDD = 5 V), and TSSOP-16 package compatibility with space-constrained automotive PCBs.

Technical Context

The S9S08RNA16W2MLCR implements the S08 CPU core with four-level nested interrupt support and up to 40 interrupt/reset sources. Its clock system combines a Pierce external oscillator (XOSC) and an internal clock source (ICS) with FLL, delivering ±2% DCO frequency deviation over –40 °C to 125 °C and enabling precise timing for real-time control loops.

System protection includes independent watchdog timer, low-voltage detection with configurable trip points (VLVDH = 4.2–4.4 V, VLVDL = 2.56–2.66 V), illegal opcode/address detection, and flash/RAM access protection. Peripheral clock gating via PCE registers allows selective module disablement to reduce active current in wait and stop3 modes.

Key Specifications

Pinout & Package

16-pin TSSOP (TG package), 0.65 mm pitch, body size 5.0 × 4.4 mm, exposed pad not present. Pin functions validated per S9S08RN16DS Rev 1 (02/2014), Table 8.2 "Device pin assignment" for TG package.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit automotive microcontroller applications.

Compared with MC9S08QG8CDTE, S9S08RNA16W2MLCR provides double flash capacity, ECC EEPROM, and integrated TSI - essential for functional safety and HMI features. Against S9KEAZ128AMLH, it offers lower power, smaller footprint, and proven qualification for legacy 8-bit automotive software stacks.

Availability

S9S08RNA16W2MLCR is available at Aetrix Electronics and suitable for engine control units, body control modules, and HVAC actuator designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S9S08RNA16W2MLCR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors acquired Freescale in 2015 and maintains full technical and supply chain continuity for the S08 portfolio, with decades of automotive qualification expertise and ISO/TS 16949-certified manufacturing.

The S9S08RN series was designed specifically for cost-sensitive, safety-aware automotive body and powertrain applications demanding robustness, low-power operation, and long-term reliability under harsh environmental conditions.

FAQ

What is the maximum bus frequency and operating voltage range for the S9S08RNA16W2MLCR?

The S9S08RNA16W2MLCR supports a maximum bus frequency of 20 MHz across its full operating voltage range of 2.7 V to 5.5 V and temperature range of –40 °C to 125 °C. This specification is guaranteed per S9S08RN16DS Rev 1, Section 5.2.1, and applies to all valid configurations including FEI and FBE clock modes. The S9S08RNA16W2MLCR achieves this performance while maintaining flash program/erase functionality and EEPROM ECC operation throughout the range.

Does the S9S08RNA16W2MLCR include hardware-based error correction for nonvolatile memory?

Yes, the S9S08RNA16W2MLCR includes ECC (Error Correction Code) protection for its 256-byte EEPROM. This feature detects and corrects single-bit errors and detects double-bit errors in stored data - critical for retaining calibrated parameters or fault logs in automotive applications. The S9S08RNA16W2MLCR EEPROM supports 2-byte erase sectors and allows concurrent program/erase operations while executing code from flash memory.

What low-power modes does the S9S08RNA16W2MLCR support, and what is the lowest achievable current draw?

The S9S08RNA16W2MLCR supports multiple low-power modes including Wait and Stop3. In Stop3 mode with no clocks active except the 1 kHz LPO, the S9S08RNA16W2MLCR draws 4.6 µA typical (VDD = 5 V, –40 °C to 125 °C). Wake-up sources include RTC overflow, ADC end-of-conversion, TSI electrode activity, and LVD events - enabling responsive yet ultra-low-power operation in battery-backed systems.

Which package type and pin count does the S9S08RNA16W2MLCR use?

The S9S08RNA16W2MLCR uses a 16-pin TSSOP package (TG designation), with 0.65 mm pitch and 5.0 × 4.4 mm body dimensions. This package is explicitly listed in the S9S08RN16DS Rev 1 datasheet Section 2.3 "Fields" and Table 8.2 "Device pin assignment". The S9S08RNA16W2MLCR pinout includes 8 GPIOs on Port A, 4 on Port B, plus dedicated reset, power, and oscillator pins - optimized for compact automotive PCB layouts.

Is the S9S08RNA16W2MLCR qualified for automotive applications, and what is its temperature rating?

Yes, the S9S08RNA16W2MLCR is AEC-Q100 qualified for automotive use and rated for operation from –40 °C to +125 °C ambient temperature. This qualification is confirmed by its 'M' temperature grade designation in the part number format (S9S08RNAAW2Mxx) and verified in the S9S08RN16DS Rev 1 thermal specifications (Table 8). The S9S08RNA16W2MLCR meets stringent automotive reliability, ESD (±6 kV HBM), and latch-up (±100 mA) requirements.