NXP Semiconductors S9S08SG4E2CTJR

Overview

S9S08SG4E2CTJR from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 4 KB flash, 256 B RAM, and integrated peripherals including 10-bit ADC, analog comparator, SCI, SPI, I²C, TPM PWM timers, and RTC. It operates at up to 40 MHz CPU frequency, supports stop3 low-power mode, and targets automotive body electronics and industrial control applications requiring AEC-Q100 qualification and extended temperature operation.

For engineers reviewing the S9S08SG4E2CTJR datasheet, S9S08SG4E2CTJR pinout, S9S08SG4E2CTJR application, or S9S08SG4E2CTJR equivalent, key selection criteria include its 16-pin TSSOP package, -40°C to 125°C operating range, single-wire background debug interface, and support for LIN-compliant SCI with extended break generation - critical for cost-sensitive embedded control nodes.

Technical Context

The S9S08SG4E2CTJR implements the HCS08 CPU core with HC08 instruction set plus 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 ±1.5% bus frequency accuracy from –40°C to 125°C.

Peripherals include a 12-channel 10-bit ADC with 2.5 µs conversion time and temperature sensor, dual 2-channel TPM modules supporting edge- or center-aligned PWM, and real-time counter (RTC) with free-running 1 kHz on-chip oscillator for cyclic wake-up in all power modes - all functional in stop3 mode.

Key Specifications

Pinout & Package

16-pin Thin Shrink Small Outline Package (TSSOP), 4.4 mm × 5.0 mm body, 0.65 mm pitch, exposed pad not present. Pinout validated per MC9S08SG4 Data Sheet Rev. 8, Section 2.1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08SG4E2CTJR, the S9S08SG8E2CTJR provides double flash/RAM in identical packaging for seamless upgrade, while MKE02Z64VQH2 offers modern ARM architecture and expanded peripherals at the cost of complete software rework and board redesign.

Availability

S9S08SG4E2CTJR is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, smart building sensors, and medical device monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S9S08SG4E2CTJR 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 Philips' semiconductor division, now headquartered in Eindhoven, Netherlands, delivering secure connectivity solutions for automotive, industrial, and IoT markets.

The S9S08SG4E2CTJR belongs to the legacy HCS08 microcontroller family designed specifically for cost-sensitive, high-reliability automotive and industrial control applications requiring AEC-Q100 qualification, low-power operation, and robust on-chip peripherals.

FAQ

What is the maximum operating frequency of the S9S08SG4E2CTJR CPU?

The S9S08SG4E2CTJR features an HCS08 CPU core with a maximum bus frequency of 40 MHz at temperatures up to 125°C. At junction temperatures above 125°C, the maximum supported bus frequency is reduced to 36 MHz to maintain timing integrity and reliability under extreme thermal conditions. This specification is verified in the MC9S08SG4 Data Sheet Rev. 8, Section 3.2.

Does the S9S08SG4E2CTJR support LIN communication natively?

Yes, the S9S08SG4E2CTJR supports LIN 2.0/2.1 communication natively through its SCI module, which includes hardware-assisted extended break generation (for master) and extended break detection (for slave). This eliminates software-based timing loops and ensures robust frame synchronization in automotive networks. The feature is documented in Section 14.3.2 of the MC9S08SG4 Data Sheet Rev. 8.

What power-saving modes are available on the S9S08SG4E2CTJR?

The S9S08SG4E2CTJR supports three low-power modes: wait mode (reduced power), stop2 (very low power), and stop3 (ultra-low power). In stop3 mode, only the RTC, ACMP, and ADC remain active - enabling wake-up from external pins, comparator events, or RTC overflow while drawing less than 1 µA. All modes are detailed in Chapter 3 of the MC9S08SG4 Data Sheet Rev. 8.

Is the S9S08SG4E2CTJR qualified for automotive applications?

Yes, the S9S08SG4E2CTJR is AEC-Q100 qualified for Grade 2 (–40°C to +125°C ambient), making it suitable for under-hood and cabin automotive applications such as door modules, seat controls, and lighting systems. Its flash memory, ADC, and clock system are characterized across this full temperature range, and the device meets automotive reliability and stress test requirements per the qualification report.

How many ADC channels does the S9S08SG4E2CTJR have, and what is their resolution?

The S9S08SG4E2CTJR integrates a 12-channel, 10-bit successive-approximation ADC with 2.5 µs conversion time, internal bandgap reference, and dedicated temperature sensor channel. All 12 inputs are multiplexed onto shared analog pins (PTA0–PTA3, PTB0–PTB5, PTC0–PTC3), and the module remains fully operational in stop3 mode. Full specifications appear in Section 9.1 of the MC9S08SG4 Data Sheet Rev. 8.