NXP Semiconductors S9S08SG8E2VTJR

Overview

S9S08SG8E2VTJR from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 8 KB flash, 512 B RAM, and integrated ADC, ACMP, SCI, SPI, I²C, TPM, RTC, and background debug interface. It operates at up to 40 MHz (36 MHz above 125 °C), supports stop3 low-power mode, and targets automotive body electronics and industrial control where extended temperature operation (−40 °C to 150 °C) is required.

For engineers reviewing the S9S08SG8E2VTJR datasheet, S9S08SG8E2VTJR pinout, S9S08SG8E2VTJR application, or S9S08SG8E2VTJR equivalent, key selection considerations include its 16-pin TSSOP package, 10-bit 12-channel ADC with temperature sensor, internal clock source with ±1.5% FLL accuracy over −40 °C to 125 °C, real-time counter with 1 kHz low-power oscillator, and single-wire background debug interface for in-circuit development.

Technical Context

The S9S08SG8E2VTJR implements the HCS08 CPU core with HC08 instruction set extension (including BGND), supporting up to 32 interrupt/reset sources and two very low-power stop modes. Its internal clock source (ICS) uses a frequency-locked loop (FLL) with precision-trimmed internal reference, enabling bus frequencies from 2 MHz to 20 MHz without external crystal.

Peripherals include a 10-bit ADC with 2.5 μs conversion time and automatic compare, dual analog comparators with edge-selectable interrupts and bandgap reference option, full-duplex SCI with LIN break support, and two 2-channel TPM modules supporting input capture, output compare, and PWM generation - all functional in stop3 mode.

Key Specifications

Pinout & Package

Package: 16-pin TSSOP (JEDEC MO-153, 4.4 mm × 5.0 mm, 0.65 mm pitch), rated for operation up to 150 °C. Not available in 20-TSSOP or 8-SOIC due to thermal qualification constraints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08SG8E2VTJR, MC9S08SG4E2VTJR offers identical I/O, timing, and temperature performance at lower memory cost, while S9S08SG16E2VTJR provides headroom for future firmware expansion - both share the same 16-TSSOP package and automotive qualification, enabling scalable design reuse without PCB changes.

Availability

S9S08SG8E2VTJR is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, smart HVAC actuation, and high-temperature sensor interface applications requiring stable component supply across extended lifecycle programs.

Supply support for S9S08SG8E2VTJR 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 company formed from the spin-off of Freescale Semiconductor and NXP's MCU business, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The S9S08SG8E2VTJR belongs to the HCS08 SG-series microcontrollers, designed specifically for cost-sensitive, high-reliability automotive body electronics and industrial control applications requiring extended temperature operation and minimal external components.

FAQ

What is the maximum operating temperature specification for the S9S08SG8E2VTJR?

The S9S08SG8E2VTJR is qualified for continuous operation from −40 °C to +150 °C in its 16-TSSOP package. This high-temperature rating is explicitly documented in the Rev. 8 datasheet and applies to all electrical and functional specifications within that range, making the S9S08SG8E2VTJR suitable for under-hood automotive locations and industrial environments with elevated ambient temperatures.

Does the S9S08SG8E2VTJR support crystal-less operation?

Yes, the S9S08SG8E2VTJR supports crystal-less operation via its Internal Clock Source (ICS) module, which includes a frequency-locked loop (FLL) and precision-trimmed internal reference. The ICS delivers bus frequencies from 2 MHz to 20 MHz with ±1.5% accuracy over −40 °C to 125 °C, enabling reliable operation without external timing components - a key feature of the S9S08SG8E2VTJR for cost-sensitive designs.

Which low-power modes are available on the S9S08SG8E2VTJR, and what peripherals remain active in stop3 mode?

The S9S08SG8E2VTJR supports two very low-power stop modes (stop2 and stop3), a reduced-power wait mode, and real-time interrupt wake-up. In stop3 mode - the deepest sleep state - the real-time counter (RTC), analog comparator (ACMP), and ADC remain fully operational, allowing event-driven wake-up and background analog monitoring while consuming sub-1 μA current. This behavior is confirmed for the S9S08SG8E2VTJR in the Rev. 8 datasheet Section 3.6.1.

What debug interface does the S9S08SG8E2VTJR provide, and how many hardware breakpoints are supported?

The S9S08SG8E2VTJR features a single-wire background debug (BDM) interface compatible with standard Freescale/NXP BDM tools. It supports one hardware breakpoint setting during in-circuit debugging, plus two additional breakpoints implemented in the on-chip debug module. This debug architecture is integral to the S9S08SG8E2VTJR's development workflow and enables efficient firmware validation without requiring dedicated debug pins beyond BKGD/MS.

Is the S9S08SG8E2VTJR pin-compatible with other members of the SG-series, such as the S9S08SG4E2VTJR or S9S08SG16E2VTJR?

Yes, the S9S08SG8E2VTJR is pin-compatible with the S9S08SG4E2VTJR and S9S08SG16E2VTJR in the 16-TSSOP package. All three share identical pin assignments, electrical characteristics, and peripheral mapping - differing only in flash (4 KB / 8 KB / 16 KB) and RAM (256 B / 512 B / 1 KB) capacities. This compatibility allows direct substitution in existing designs, making the S9S08SG8E2VTJR part of a scalable memory family.