NXP Semiconductors S9S08RNA16W2MTJR

Overview

S9S08RNA16W2MTJR from NXP Semiconductors (formerly Freescale) is an 8-bit S08 core microcontroller designed for automotive and industrial control applications requiring extended temperature operation. It integrates 16 KB flash, 256-byte EEPROM with ECC, 2 KB RAM, and operates at up to 20 MHz bus frequency across –40 °C to +125 °C. Key peripherals include dual SCI/UART, I²C, SPI, two FTM modules, 12-bit ADC (12-channel in 48-pin packages), TSI touch sensing, and low-power stop3 mode consuming 4.6 µA.

For engineers reviewing the S9S08RNA16W2MTJR datasheet, S9S08RNA16W2MTJR pinout, S9S08RNA16W2MTJR application, or S9S08RNA16W2MTJR equivalent, this page delivers verified technical context, package-specific pin assignments, real-world use cases in engine control and body electronics, and validated alternative parts with documented functional and thermal differences.

Technical Context

The S9S08RNA16W2MTJR implements an S08 CPU core with four-level nested interrupt support and up to 40 interrupt/reset sources. Its clock system combines a Pierce oscillator (XOSC) for crystal/resonator operation and an internal clock source (ICS) with frequency-locked-loop (FLL), enabling precise 1–2% frequency stability across –40 °C to 125 °C via factory-trimmed internal reference.

System protection includes independent watchdog timer, configurable low-voltage detection (LVD) with four warning thresholds per range, 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 featuring two comparators and nine trigger modes.

Key Specifications

Pinout & Package

16-pin TSSOP package (TG suffix), 3.0 mm × 4.4 mm body, 0.65 mm pitch, exposed pad optional. Pinout validated per S9S08RN16 Series Data Sheet Rev 1 (02/2014), Table 8.2 (16-pin TSSOP assignment).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08QG8CDTE and S9S08SG16E1MTJR, the S9S08RNA16W2MTJR uniquely balances high-resolution analog acquisition (12-bit ADC), capacitive touch (TSI), and extended temperature resilience - making it optimal for mixed-signal automotive body electronics where space, power, and environmental robustness are co-constrained.

Availability

S9S08RNA16W2MTJR is available at Aetrix Electronics and suitable for engine control units, body control modules, industrial motor drives, and smart sensor nodes requiring stable component supply across automotive production lifecycles.

Supply support for S9S08RNA16W2MTJR 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 markets, with deep heritage in microcontrollers dating to Motorola and Freescale.

The S08 family-including S9S08RNA16W2MTJR-was engineered for cost-sensitive, high-reliability embedded control in extreme environments, emphasizing low-power operation, integrated analog peripherals, and automotive-grade qualification (AEC-Q100 Grade 1).

FAQ

What is the maximum operating frequency of the S9S08RNA16W2MTJR?

The S9S08RNA16W2MTJR supports a maximum bus frequency of 20 MHz across its full operating voltage (2.7–5.5 V) and temperature (–40 °C to +125 °C) range. This is achieved using the internal clock source (ICS) with frequency-locked-loop (FLL) in FEE or FBE modes. The actual core instruction execution rate is derived from the bus clock, and timing-critical peripherals like FTM and ADC are synchronized to this clock domain. The S9S08RNA16W2MTJR datasheet specifies 20 MHz as the guaranteed maximum under all qualified conditions.

Does the S9S08RNA16W2MTJR support in-circuit debugging?

Yes, the S9S08RNA16W2MTJR includes a single-wire background debug interface (BDM) compliant with Freescale/NXP standards. It supports three hardware breakpoints, real-time variable inspection, and flash programming during development. An on-chip in-circuit emulator (ICE) module provides two comparators and nine trigger modes for advanced trace and timing analysis. Debug functionality remains accessible even in low-power stop3 mode, enabling power-aware firmware validation without removing the S9S08RNA16W2MTJR from the target board.

What are the key differences between the S9S08RNA16W2MTJR and the S9S08SG16E1MTJR?

The S9S08RNA16W2MTJR and S9S08SG16E1MTJR share the same 16 KB flash, 16-pin TSSOP package, and –40 °C to +125 °C rating, but differ critically in peripheral sets: the S9S08RNA16W2MTJR includes TSI (touch sensing interface) and a 12-channel, 12-bit ADC, while the S9S08SG16E1MTJR replaces those with a CAN 2.0B controller and uses an 8-channel, 10-bit ADC. Neither part is pin-compatible with the other due to differing peripheral pin mappings, so PCB redesign is required when substituting the S9S08RNA16W2MTJR for S9S08SG16E1MTJR or vice versa.

Can the S9S08RNA16W2MTJR operate from a 3.3 V supply?

Yes, the S9S08RNA16W2MTJR is fully specified to operate from 2.7 V to 5.5 V, including 3.3 V nominal supplies. All electrical characteristics-including DC parameters (VOH/VOL), ADC accuracy, flash programming voltage, and low-power mode currents-are guaranteed across this range. At 3.3 V, the maximum bus frequency remains 20 MHz, and the internal FLL maintains frequency stability within ±2% over –40 °C to +125 °C. The S9S08RNA16W2MTJR's I/O pins support mixed-voltage interfacing with 5 V-tolerant inputs on non-open-drain pins when VDD = 3.3 V.

What packaging and thermal specifications apply to the S9S08RNA16W2MTJR?

The S9S08RNA16W2MTJR is supplied in a 16-pin TSSOP package (TG suffix) with 0.65 mm pitch and JEDEC-standard dimensions (3.0 mm × 4.4 mm). Its thermal resistance is θJA = 130 °C/W on a single-layer board and 87 °C/W on a four-layer board. The device is rated for junction temperatures from –40 °C to +135 °C and ambient operation from –40 °C to +125 °C. These values are confirmed in Table 8 of the S9S08RN16 Series Data Sheet Rev 1 (02/2014), and the S9S08RNA16W2MTJR meets AEC-Q100 Grade 1 automotive qualification requirements.