NXP Semiconductors S9S08SG8E2CTGR

Overview

S9S08SG8E2CTGR from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 8 KB flash, 512 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 and supports extended temperature range up to 125 °C - used in automotive body control modules and industrial sensor nodes requiring low-power operation and on-chip debug.

For engineers reviewing the S9S08SG8E2CTGR datasheet, S9S08SG8E2CTGR pinout, S9S08SG8E2CTGR application, or S9S08SG8E2CTGR equivalent, key selection criteria include flash endurance (100k erase/write cycles), stop3 mode current (1.5 µA typical), internal clock source accuracy (±1.5% over –40 to 125 °C), and single-wire background debug interface compatibility.

Technical Context

The S9S08SG8E2CTGR implements the HCS08 CPU core with HC08 instruction set extension (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 for bus frequencies from 2 MHz to 20 MHz.

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 low-power oscillator enabling cyclic wake-up in all MCU modes.

Key Specifications

Pinout & Package

Package: 16-pin TSSOP (JEDEC MO-153, 4.4 mm × 5.0 mm), lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08SG8E2CTGR, MC9S08SG4CTG reduces memory capacity but maintains identical low-power behavior and debug interface, while S9S08SG16E2CTGR scales flash/RAM upward with no architectural or layout impact - enabling seamless migration paths within the same footprint and toolchain.

Availability

S9S08SG8E2CTGR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart appliance controllers, and portable medical devices requiring stable component supply and long-term manufacturability.

Supply support for S9S08SG8E2CTGR 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 applications.

The S9S08SG8E2CTGR belongs to NXP's legacy HCS08 microcontroller family, designed for cost-sensitive, low-power embedded control in harsh environments - emphasizing robustness, debug accessibility, and minimal external component count.

FAQ

What is the maximum operating frequency of the S9S08SG8E2CTGR CPU?

The S9S08SG8E2CTGR CPU runs at up to 40 MHz under standard temperature conditions (–40 °C to 105 °C). At ambient temperatures above 125 °C, the maximum supported frequency is derated to 36 MHz to ensure reliable operation and meet electrical specifications across the extended range.

Does the S9S08SG8E2CTGR support in-circuit debugging?

Yes, the S9S08SG8E2CTGR features a single-wire background debug (BDM) interface compatible with standard Freescale/NXP BDM tools. It supports real-time register inspection, memory read/write, and one hardware breakpoint - all accessible via the BKGD/MS pin without requiring additional debug headers or pins.

Can the S9S08SG8E2CTGR operate from an internal clock source only?

Yes, the S9S08SG8E2CTGR integrates an Internal Clock Source (ICS) module with a frequency-locked loop (FLL) and precision-trimmed internal reference. It delivers bus frequencies from 2 MHz to 20 MHz without external crystals or resonators - ideal for cost-constrained or space-limited designs where external timing components are undesirable.

What power-saving modes does the S9S08SG8E2CTGR offer?

The S9S08SG8E2CTGR provides three low-power modes: wait mode (CPU halted, peripherals active), stop2 (deep sleep with wake on reset or IRQ), and stop3 (ultra-low-power mode drawing 1.5 µA typical while keeping RTC and certain wakeup sources active). All modes retain RAM contents and support fast wake-up times.

Is the S9S08SG8E2CTGR pin-compatible with other members of the SG8 family?

Yes, the S9S08SG8E2CTGR in 16-TSSOP packaging shares identical pinout and electrical characteristics with MC9S08SG4CTG and S9S08SG16E2CTGR - enabling direct substitution within the same package variant. This allows scalable memory selection without PCB redesign or layout changes.