NXP Semiconductors S9S08SG16E1MTG

Overview

S9S08SG16E1MTG from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 16 KB on-chip Flash, 1 KB RAM, and integrated peripherals including 10-bit ADC, dual TPM timers, SCI, SPI, I²C, ACMP, and RTC. It operates at up to 40 MHz bus frequency, supports -40°C to 125°C ambient temperature, and targets embedded control in automotive body electronics and industrial sensors.

For engineers reviewing the S9S08SG16E1MTG datasheet, S9S08SG16E1MTG pinout, S9S08SG16E1MTG application, or S9S08SG16E1MTG equivalent, key selection criteria include Flash size (16 KB), TSSOP-16 package compatibility, stop3-mode peripheral operation (ADC/ACMP/RTC active), internal clock source (ICS) trim accuracy (±0.2% at 25°C), and LIN-capable SCI interface.

Technical Context

The S9S08SG16E1MTG implements the HCS08 CPU core with BGND instruction support and handles up to 32 interrupt/reset sources. Its ICS module uses a frequency-locked loop (FLL) with internal reference trimming for stable 2–20 MHz bus frequencies across voltage and temperature.

Peripherals include a 16-channel 10-bit ADC with 2.5 µs conversion time and internal temperature sensor, two 2-channel TPM modules supporting edge-aligned PWM and input capture, and an SCI with LIN master break generation-enabling direct integration into automotive sub-systems without external protocol translators.

Key Specifications

Pinout & Package

Package: 16-pin TSSOP (Thin Shrink Small Outline Package), 0.65 mm pitch, JEDEC MO-153 compliant, thermal resistance θ_JA = 113 °C/W (single-layer board, 200 ft/min airflow).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08SG32E1MTG, S9S08SG16E1MTG offers identical functionality in a cost-optimized 16 KB Flash variant; versus S9KEAZ128AMLH, it delivers proven reliability and minimal BOM count for legacy-compatible 8-bit control where ARM migration is unnecessary.

Availability

S9S08SG16E1MTG is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart HVAC actuators, and appliance motor control boards requiring stable component supply and long-term lifecycle support.

Supply support for S9S08SG16E1MTG 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 applications, formed from the merger of Freescale and NXP in 2015.

The S9S08SG16E1MTG belongs to the HCS08 microcontroller family designed for cost-sensitive, high-reliability embedded control in automotive and industrial environments-emphasizing low power, functional safety readiness, and robust peripheral integration.

FAQ

What is the maximum operating frequency of the S9S08SG16E1MTG?

The S9S08SG16E1MTG supports a maximum bus frequency of 40 MHz under standard conditions (–40°C to +125°C). This is achieved using the internal clock source (ICS) with FLL enabled and appropriate configuration of the ICSTRM register. At temperatures above 125°C, the maximum bus frequency is reduced to 36 MHz to maintain timing integrity. The S9S08SG16E1MTG does not require external clock circuitry to reach this speed when using the factory-trimmed internal reference.

Does the S9S08SG16E1MTG support LIN communication natively?

Yes, the S9S08SG16E1MTG's SCI module supports LIN 2.0/2.1 protocol features directly: it can generate extended breaks (13–27 bit) as a LIN master and detect them as a LIN slave. No external transceiver or software bit-banging is required for basic LIN frame handling. The S9S08SG16E1MTG also includes dedicated LIN-related control bits in the SCICR2 register to simplify implementation in automotive body networks.

What power-saving modes are available on the S9S08SG16E1MTG?

The S9S08SG16E1MTG offers three primary low-power modes: Wait (CPU halted, peripherals active), Stop2 (deep sleep with limited wake-up sources), and Stop3 (deepest mode with RTC, ADC, and ACMP remaining functional). In Stop3 mode, typical current consumption is less than 1 µA at 25°C, enabling battery-operated applications to achieve multi-year operation. The S9S08SG16E1MTG enters these modes via specific STOP instruction sequences and wakes on interrupt or RTC overflow.

Is the S9S08SG16E1MTG pin-compatible with other MC9S08SGxx devices?

Yes, the S9S08SG16E1MTG in the 16-pin TSSOP package shares identical pin assignment and electrical characteristics with the MC9S08SG32E1MTG and MC9S08SG8E1MTG. All three devices use the same 16-pin footprint, I/O mapping, and peripheral register layout-allowing drop-in replacement based solely on Flash size requirements without PCB modification. The S9S08SG16E1MTG maintains full software compatibility across this family.

What debugging interface does the S9S08SG16E1MTG provide?

The S9S08SG16E1MTG integrates a single-wire background debug (BDM) interface accessible through the BKGD/MS pin. It supports real-time memory inspection, register read/write, breakpoint setting (one hardware breakpoint), and flash programming. The on-chip debug module includes a 9-event trigger system and 8-deep FIFO for flow tracing. No external debugger hardware is required beyond a standard BDM pod compatible with HCS08 architecture-making the S9S08SG16E1MTG suitable for rapid prototyping and field firmware updates.