NXP Semiconductors S9S08RN16W2VTJR

Overview

S9S08RN16W2VTJR 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 from 2.7 V to 5.5 V across –40 °C to 125 °C. It integrates dual SCI/UART, I²C, SPI, two FTM modules, 12-bit ADC (12-channel), TSI touch sensing, and a hardware CRC module - deployed in engine control units, body electronics, and powertrain sensor interfaces.

For engineers reviewing the S9S08RN16W2VTJR datasheet, S9S08RN16W2VTJR pinout, S9S08RN16W2VTJR application, or S9S08RN16W2VTJR equivalent, this page delivers verified electrical specs, thermal behavior at 125 °C, stop3-mode current (4.6 µA), ICS frequency stability (±2% over –40 °C to 125 °C), and validated peripheral timing for FTM input capture and SCI LIN support.

Technical Context

The S9S08RN16W2VTJR implements an enhanced S08 CPU core with four-level nested interrupt handling and up to 40 interrupt/reset sources. Its clock system combines a Pierce external oscillator (XOSC) and an internal clock source (ICS) featuring a frequency-locked loop (FLL) with factory-trimmed internal reference (39.0625 kHz), enabling ±2% DCO output deviation over –40 °C to 125 °C.

System protection includes independent watchdog with dedicated clock, low-voltage detection with configurable trip points (e.g., VLVDH = 4.3 V), illegal opcode/address reset, and flash/RAM access protection. Debug is supported via single-wire background debug interface (BDM) with three breakpoints and on-chip ICE module with two comparators and nine trigger modes.

Key Specifications

Pinout & Package

Package: 20-pin TSSOP (JEDEC MO-153, 4.4 mm × 6.5 mm, 0.65 mm pitch). Pinout validated per S9S08RN16 Series Data Sheet Rev 1 (02/2014), Table 8.2 "Device pin assignment" for 20-pin TSSOP variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08RN16W2VTJR, MC9S08RN32W2VTJR offers direct pin-compatible upgrade path with doubled flash, while S9KEAZ128AMLH provides ARM-based scalability at the cost of architectural discontinuity - both require validation of thermal dissipation and PCB layout under worst-case 125 °C operation.

Availability

S9S08RN16W2VTJR is available at Aetrix Electronics and suitable for engine control units, body electronics modules, and industrial motor controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S9S08RN16W2VTJR 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 to the Motorola 68HC05 era.

The S08 RN series was designed specifically for cost-sensitive, high-reliability automotive body and powertrain applications demanding extended temperature operation, robust EMC performance, and long-term supply assurance - with S9S08RN16W2VTJR targeting entry-level ECU and BCM implementations.

FAQ

What is the maximum bus frequency and operating voltage range for the S9S08RN16W2VTJR?

The S9S08RN16W2VTJR 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 the S9S08RN16 Series Data Sheet Rev 1 (02/2014), Table 5, and applies to all valid configurations including FEI and FBE modes. The S9S08RN16W2VTJR maintains timing compliance without derating under these conditions.

Does the S9S08RN16W2VTJR support hardware CRC calculation?

Yes, the S9S08RN16W2VTJR includes a dedicated programmable cyclic redundancy check (CRC) module capable of computing 8-bit or 16-bit checksums over arbitrary memory regions. This module operates independently of the CPU and supports both memory-to-memory and memory-to-peripheral transfer modes. The CRC engine is documented in Section 6.10 of the S9S08RN16 Series Data Sheet and is accessible via register-mapped I/O.

What are the key low-power modes available on the S9S08RN16W2VTJR?

The S9S08RN16W2VTJR supports multiple low-power modes including Wait mode (5.95 mA typical at 20 MHz/5 V) and Stop3 mode (4.6 µA typical at 5 V, –40 °C to 125 °C). Stop3 retains RAM and selected registers while disabling all clocks except the 1 kHz LPO, and supports wake-up via TSI, ADC, SCI, RTC, or GPIO interrupts. Peripheral clock gating via the PCE register further reduces active-mode current.

Can the S9S08RN16W2VTJR perform ADC conversions while in Stop3 mode?

Yes, the S9S08RN16W2VTJR supports ADC operation in Stop3 mode. When configured with ADLPC = 1, ADLSMP = 1, ADCO = 1, MODE = 10B, and ADICLK = 11B, the ADC draws an additional 40 µA (typical) in Stop3 mode. This capability enables periodic sensor sampling without full MCU wake-up, preserving system-level energy efficiency in battery-powered automotive modules.

Is the S9S08RN16W2VTJR pin-compatible with other devices in the S08 RN family?

The S9S08RN16W2VTJR in 20-pin TSSOP shares identical pinout and electrical characteristics with other 20-pin variants in the S08 RN family, including S9S08RN8W2VTJR and MC9S08RN32W2VTJR. All share the same signal multiplexing, drive strength profiles, and peripheral mapping per the 20-pin TSSOP package definition in the S9S08RN16 Series Data Sheet. However, flash size and EEPROM capacity differ between part numbers.