NXP Semiconductors S9S08RNA32W1MLCR

Overview

S9S08RNA32W1MLCR from NXP Semiconductors (formerly Freescale) is an 8-bit S08 core microcontroller designed for automotive and industrial control applications requiring robust operation across -40 °C to 125 °C. It integrates 32 KB flash, 256-byte EEPROM with ECC, 4 KB RAM, a 12-bit 16-channel ADC, three FTM timer modules, and dual SCI/UART interfaces - all operating at up to 20 MHz bus frequency on 2.7–5.5 V supply.

For engineers reviewing the S9S08RNA32W1MLCR datasheet, S9S08RNA32W1MLCR pinout, S9S08RNA32W1MLCR application, or S9S08RNA32W1MLCR equivalent, this page delivers verified technical context, validated package mapping (32-pin LQFP), confirmed peripheral timing specs, and two rigorously cross-referenced alternative MCUs for functional migration paths in engine control units, body electronics, and motor drive systems.

Technical Context

The S9S08RNA32W1MLCR implements the S08 CPU core with four-level nested interrupt support and up to 40 interrupt/reset sources. Its clock system combines an external crystal oscillator (XOSC) and an internal clock source (ICS) featuring a frequency-locked loop (FLL), enabling precise 20 MHz operation with ±2.0% DCO deviation over -40 °C to 125 °C.

System protection includes independent watchdog timer, low-voltage detection with configurable trip points (e.g., VLVDH = 4.2–4.4 V), illegal opcode/address detection, and flash/RAM access protection. Debug is supported via single-wire background debug interface with three hardware breakpoints and on-chip ICE module with two comparators and nine trigger modes.

Key Specifications

Pinout & Package

32-pin LQFP (package code LC), 7 × 7 mm body, 0.8 mm pitch, exposed pad not present. Pin assignments conform to S9S08RN32 family specification per Rev. 1 (01/2014) datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08RNA32W1MLCR, the S9S08RNA48W1MLCR offers direct memory scalability within the same package and pinout, whereas the MC9S08AC60CLC trades modern low-power features and automotive qualification for lower unit cost and simpler toolchain support in non-critical environments.

Availability

S9S08RNA32W1MLCR is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, and smart sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S9S08RNA32W1MLCR 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 product continuity, documentation, and support for the S08 portfolio. The company specializes in secure, energy-efficient semiconductor solutions for automotive, industrial, and IoT markets.

The S9S08RNA32W1MLCR belongs to the S08RN family - engineered specifically for automotive-grade embedded control with emphasis on functional safety, extended temperature resilience, and integrated analog/mixed-signal peripherals for real-time deterministic operation.

FAQ

What is the maximum bus frequency supported by the S9S08RNA32W1MLCR?

The S9S08RNA32W1MLCR supports a maximum bus frequency of 20 MHz across its full operating voltage range (2.7–5.5 V) and temperature range (-40 °C to 125 °C). This frequency is achieved using the internal clock source (ICS) with frequency-locked loop (FLL) or external crystal oscillator (XOSC), and is validated per the S9S08RN60 Series Data Sheet Rev. 1 (01/2014). The S9S08RNA32W1MLCR maintains timing compliance at this rate under worst-case conditions.

Does the S9S08RNA32W1MLCR support EEPROM with error correction?

Yes, the S9S08RNA32W1MLCR includes 256 bytes of on-chip EEPROM with built-in error-correcting code (ECC) protection. It supports 2-byte erase sectors and allows simultaneous EEPROM program/erase operations while executing code from flash memory - a key capability for reliable data logging and configuration storage in automotive applications. This feature is explicitly documented in the S9S08RN60 Series Data Sheet Section "Features" and Table 2 (DC characteristics).

What package type and pin count does the S9S08RNA32W1MLCR use?

The S9S08RNA32W1MLCR uses a 32-pin LQFP package (package code LC), measuring 7 mm × 7 mm with 0.8 mm pitch. This matches the "RN32" variant designation in the part number format defined in Section 2.3 of the S9S08RN60 Series Data Sheet. Pin assignments are fully compatible with other RN32-family members and are detailed in Section 8 ("Pinout") of the datasheet.

Can the S9S08RNA32W1MLCR operate in ultra-low-power stop modes?

Yes, the S9S08RNA32W1MLCR supports Stop3 mode with typical supply current of 3.8 µA at 5 V and -40 °C to 125 °C. In this mode, only the 1 kHz low-power oscillator (LPO) remains active, while peripherals including ADC, TSI, and LVD can be configured to generate wake events. These values are specified in Table 4 ("Supply current characteristics") of the S9S08RN60 Series Data Sheet Rev. 1.

Is the S9S08RNA32W1MLCR qualified for automotive applications?

Yes, the S9S08RNA32W1MLCR is qualified for automotive use with an operating temperature range of -40 °C to +125 °C and compliance to AEC-Q100 Grade 1 standards. Its feature set - including dual LVD thresholds, watchdog with independent clock, illegal opcode detection, and flash/RAM protection - supports functional safety requirements in engine control, body electronics, and chassis systems. This qualification is confirmed in the "Ratings" and "Thermal specifications" sections of the official datasheet.