NXP Semiconductors S9S08SG8E2MTJR

Overview

S9S08SG8E2MTJR 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 CPU frequency, supports stop3 low-power mode with peripheral wake-up, and targets automotive body electronics and industrial control applications requiring extended temperature operation.

For engineers reviewing the S9S08SG8E2MTJR datasheet, S9S08SG8E2MTJR pinout, S9S08SG8E2MTJR application, or S9S08SG8E2MTJR equivalent, key selection criteria include its 16-TSSOP package, -40°C to 150°C operating range, on-chip 10-bit ADC with temperature sensor, real-time counter with 1 kHz internal oscillator, and single-wire background debug capability for space-constrained embedded designs.

Technical Context

The S9S08SG8E2MTJR implements the HCS08 CPU core with HC08 instruction set extension including BGND, supporting up to 32 interrupt/reset sources. Its clock system integrates both external crystal/ceramic resonator (31.25 kHz–16 MHz) and internal clock source (ICS) with FLL, enabling bus frequencies from 2 MHz to 20 MHz with ±1.5% deviation over -40°C to 125°C.

Peripherals include a 12-channel 10-bit ADC (2.5 µs conversion), dual analog comparators with bandgap reference and TPM routing, full-duplex SCI with LIN support, I²C up to 100 kbps, two 2-channel TPM modules, and an 8-bit RTC with external or internal 1 kHz clock source - all functional in stop3 mode for ultra-low-power monitoring.

Key Specifications

Pinout & Package

16-TSSOP (Thin Shrink Small Outline Package), 4.4 mm × 5.0 mm body, 0.65 mm lead pitch, thermally enhanced for high-temperature operation up to 150°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08SG8E2MTJR, the S9S08SG4E2MTJR offers identical functionality at reduced memory density for cost-sensitive volume production, while the MKE02Z64VQH2 provides architectural modernization and headroom at the expense of legacy code compatibility and toolchain transition effort.

Availability

S9S08SG8E2MTJR is available at Aetrix Electronics and suitable for automotive body electronics, industrial temperature monitoring, smart power outlets, and motorized valve control requiring stable component supply across extended temperature ranges.

Supply support for S9S08SG8E2MTJR 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, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The S9S08SG8E2MTJR belongs to NXP's legacy HCS08 microcontroller family, designed specifically for cost-optimized, high-reliability embedded control in harsh environments where extended temperature operation and low-power sleep modes are critical.

FAQ

What is the maximum operating temperature supported by the S9S08SG8E2MTJR?

The S9S08SG8E2MTJR is rated for operation from -40°C to +150°C, validated per Freescale/NXP qualification standards for high-temperature automotive and industrial applications. This rating applies specifically to the 16-TSSOP package variant and is confirmed in Rev. 8 of the MC9S08SG8 datasheet. The S9S08SG8E2MTJR maintains full functionality-including ADC, ACMP, and RTC-in stop3 mode across this entire range.

Does the S9S08SG8E2MTJR support LIN communication natively?

Yes, the S9S08SG8E2MTJR's SCI module supports LIN 2.0-compliant features including master-mode extended break generation and slave-mode extended break detection. These capabilities are implemented in hardware and require no additional transceiver for basic LIN node operation. The S9S08SG8E2MTJR uses standard UART framing with configurable break timing, enabling direct integration into automotive sub-networks without protocol stack overhead.

Can the S9S08SG8E2MTJR operate from an internal clock source only, without an external crystal?

Yes, the S9S08SG8E2MTJR can run entirely from its internal clock source (ICS) module, which includes a frequency-locked loop (FLL) and trimmed internal reference oscillator. The ICS supports bus frequencies from 2 MHz to 20 MHz with ±1.5% deviation over -40°C to 125°C. The S9S08SG8E2MTJR does not require an external crystal for basic operation, though XOSC is needed for highest timing accuracy or LIN synchronization.

How many analog channels does the ADC in the S9S08SG8E2MTJR support?

The S9S08SG8E2MTJR integrates a 12-channel, 10-bit successive-approximation ADC with 2.5 µs conversion time. All 12 channels are accessible via dedicated pins (AD0–AD11) mapped to Port A and Port B. One channel is reserved for the on-die temperature sensor, and another for internal bandgap reference - both usable simultaneously with external inputs. The S9S08SG8E2MTJR's ADC operates in run, wait, and stop3 modes.

Is the S9S08SG8E2MTJR pin-compatible with other members of the MC9S08SGx family?

Yes, the S9S08SG8E2MTJR in 16-TSSOP is pin-compatible with the S9S08SG4E2MTJR and S9S08SG16E2MTJR within the same package variant. All share identical pin assignments, electrical characteristics, and peripheral mapping. However, the S9S08SG8E2MTJR is not pin-compatible with 20-TSSOP or 8-SOIC variants due to differing pin counts and functions. Firmware built for S9S08SG8E2MTJR runs unmodified on S9S08SG4E2MTJR, subject to flash/RAM size constraints.