NXP Semiconductors S9S08RN32W1VLC

Overview

S9S08RN32W1VLC from NXP Semiconductors (formerly Freescale) is an 8-bit S08 MCU with 32 KB flash, 4 KB RAM, and 256-byte EEPROM with ECC, operating at up to 20 MHz across –40 °C to 125 °C. It integrates ADC, FTM timers, SCI/UART, SPI, I²C, TSI, ACMP, RTC, and a single-wire BDM debug interface - deployed in automotive body control modules, industrial sensor nodes, and motor drive supervision circuits.

For engineers reviewing the S9S08RN32W1VLC datasheet, S9S08RN32W1VLC pinout, S9S08RN32W1VLC application, or S9S08RN32W1VLC equivalent, key selection criteria include its 32-pin LQFP package, –40 °C to 125 °C extended temperature grade, on-chip EEPROM with erase-while-execute capability, low-power stop3 mode consuming 3.8 µA, and integrated touch-sensing interface supporting wake-from-stop operation.

Technical Context

The S9S08RN32W1VLC 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) with frequency-locked-loop (FLL), enabling precise bus frequencies up to 20 MHz with ±2.0% total DCO deviation over –40 °C to 125 °C.

System protection includes independent watchdog timer, programmable low-voltage detection (LVD) with four warning levels, illegal opcode/address detection, and flash/RAM access protection. Peripheral integration targets real-time embedded control: three FTM modules (one 6-channel, two 2-channel), three SCI UARTs with LIN support, dual modulo timers, and 16-channel 12-bit ADC with 2.5 µs conversion time and stop-mode operation.

Key Specifications

Pinout & Package

32-pin LQFP (package code LC), 7 × 7 mm body, 0.8 mm pitch, exposed pad optional. Pinout validated per S9S08RN60 Series Data Sheet Rev. 1 (01/2014), Section 8.2 - device-specific assignment for S9S08RN32 variant confirmed via pin count, signal multiplexing, and I/O count mapping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08RN32CFUE and S9KEAZ32AMLH, the S9S08RN32W1VLC uniquely delivers automotive-grade –40 °C to 125 °C operation in a compact 32-pin LQFP with production-proven EEPROM reliability and ultra-low stop3 current - making it optimal for cost-sensitive, thermally demanding embedded control where software compatibility and data retention are critical.

Availability

S9S08RN32W1VLC is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, motor supervision systems, and appliance user interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for S9S08RN32W1VLC 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 is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep heritage in microcontrollers dating back to Motorola and Freescale.

The S08 RN series - including the S9S08RN32W1VLC - was designed specifically for cost-optimized, high-reliability embedded control in harsh environments, emphasizing extended temperature operation, integrated analog peripherals, and robust low-power modes.

FAQ

What is the maximum bus frequency supported by the S9S08RN32W1VLC?

The S9S08RN32W1VLC 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 is achieved using the internal clock source (ICS) with frequency-locked-loop (FLL) and external crystal oscillator (XOSC) configurations, as specified in the S9S08RN60 Series Data Sheet Rev. 1.

Does the S9S08RN32W1VLC support EEPROM wear leveling or automatic erase management?

No, the S9S08RN32W1VLC does not implement hardware wear leveling or automatic erase management. Its 256-byte EEPROM uses fixed 2-byte erase sectors, and erase/write operations must be managed in firmware. However, ECC protection is applied per 2-byte sector to detect and correct single-bit errors during read operations - enhancing data reliability without requiring external logic.

Can the S9S08RN32W1VLC operate in stop mode while running the ADC or TSI module?

Yes, the S9S08RN32W1VLC supports ADC and TSI operation in Stop3 mode. The ADC can perform conversions with hardware triggers (e.g., RTC or FTM overflow), and TSI can scan electrodes and generate interrupts to wake the MCU - both adding only 44 µA and 111 µA respectively to the base 3.8 µA Stop3 current at 5 V, as documented in Table 4 of the datasheet.

What debug interface does the S9S08RN32W1VLC provide, and is JTAG supported?

The S9S08RN32W1VLC provides a single-wire background debug mode (BDM) interface via the BKGD pin - supporting in-circuit programming, real-time register inspection, and up to three hardware breakpoints. JTAG is not supported; the device lacks TDI/TDO/TMS/TCK pins and associated boundary-scan logic, consistent with the S08 architecture's focus on minimal pin count and cost efficiency.

Is the S9S08RN32W1VLC pin-compatible with other members of the S9S08RNxx family?

No, the S9S08RN32W1VLC is not pin-compatible with S9S08RN48 or S9S08RN60 variants. While all share the S08 RN architecture and peripheral set, they differ in package options: S9S08RN32W1VLC uses 32-pin LQFP (LC), whereas RN48 and RN60 are offered in 48-pin (LF) and 64-pin (LH) LQFP packages. Pin assignments, I/O count, and signal multiplexing are specific to each package size.