NXP Semiconductors S9S08SG16E1WTLR

Overview

S9S08SG16E1WTLR 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 temperature range, and targets cost-sensitive industrial control and automotive body electronics applications.

For engineers reviewing the S9S08SG16E1WTLR datasheet, S9S08SG16E1WTLR pinout, S9S08SG16E1WTLR application, or S9S08SG16E1WTLR equivalent, key selection criteria include its 16-TSSOP package, 22 GPIOs with configurable slew rate and pull-ups, stop3 mode operation for ultra-low-power wake-up, and background debug interface for in-circuit development.

Technical Context

The S9S08SG16E1WTLR implements the HCS08 CPU core with HC08 instruction set extension, supporting up to 32 interrupt/reset sources and single-wire background debug. Its internal clock source (ICS) uses a frequency-locked loop (FLL) with precision-trimmed internal reference enabling ±1.5% frequency deviation over –40°C to +125°C.

Peripherals include a 16-channel 10-bit ADC with 2.5 µs conversion time and internal temperature sensor, two 2-channel timer-pulse-width-modulator (TPM) modules supporting input capture, output compare, and edge/center-aligned PWM, and an RTC with free-running 1 kHz low-power oscillator that operates in all MCU modes including stop3.

Key Specifications

Pinout & Package

Package: 16-pin Thin Shrink Small Outline Package (TSSOP), 4.4 mm × 5.0 mm body, 0.65 mm pitch, 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 S9S08SG16E1WTLR, the MC9S08SG32E1WTLR offers double FLASH capacity within identical thermal and timing behavior, while the S9S08SG8E1WTLR reduces memory and cost for minimal-feature implementations - all three share pin compatibility, debug interface, and peripheral register mapping.

Availability

S9S08SG16E1WTLR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, appliance motor control, and smart HVAC actuator designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S9S08SG16E1WTLR 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 S9S08SG16E1WTLR belongs to the legacy HCS08 microcontroller family designed for cost-optimized, low-power embedded control in harsh environments - particularly targeting automotive Grade 2 and industrial applications requiring robustness, debuggability, and long-term supply stability.

FAQ

What is the maximum operating frequency of the S9S08SG16E1WTLR?

The S9S08SG16E1WTLR supports a maximum bus frequency of 40 MHz when operating within its specified voltage and temperature range. This frequency is achieved using the internal clock source (ICS) with FLL enabled and properly trimmed reference. At temperatures above 125°C, the maximum bus frequency is reduced to 36 MHz to maintain timing integrity. The S9S08SG16E1WTLR does not require external clocking to reach full speed, as the ICS provides sufficient accuracy for most control applications.

Does the S9S08SG16E1WTLR support LIN communication?

Yes, the S9S08SG16E1WTLR supports LIN communication through its SCI module, which includes dedicated hardware features for LIN protocol compliance: master-mode extended break generation and slave-mode extended break detection. These capabilities allow the S9S08SG16E1WTLR to serve as either a LIN master or slave node without additional external logic or firmware overhead. The SCI also supports wake-up on active edge, essential for low-power LIN network participation.

What debug interface does the S9S08SG16E1WTLR use?

The S9S08SG16E1WTLR uses a single-wire background debug (BDM) interface accessible via the BKGD/MS pin. This interface enables in-circuit debugging, flash programming, and real-time register inspection without halting the CPU for extended periods. It supports one hardware breakpoint and integrates with standard Freescale/NXP BDM tools such as the OSBDM and standalone programmers. The S9S08SG16E1WTLR does not support JTAG or SWD interfaces.

Is the S9S08SG16E1WTLR qualified for automotive applications?

Yes, the S9S08SG16E1WTLR is qualified to AEC-Q100 Grade 2 standards (–40°C to +105°C) and supports extended temperature operation up to +125°C per its datasheet specifications. It includes automotive-oriented features such as LIN-compliant SCI, robust reset and watchdog circuitry (COP), low-voltage detection with interrupt capability, and FLASH block protection - all validated for use in body electronics, lighting, and comfort systems. The S9S08SG16E1WTLR part number suffix "E1" denotes this qualification level.

Can the S9S08SG16E1WTLR operate from a single 3.3 V supply?

Yes, the S9S08SG16E1WTLR operates across a supply voltage range of 2.7 V to 5.5 V, fully supporting 3.3 V nominal operation. All I/O pins are 5 V tolerant when configured as inputs, and internal peripherals-including the ADC, ACMP, and RTC-function correctly at 3.3 V. The internal bandgap reference remains stable across this range, ensuring consistent ADC and comparator performance. No level-shifting is required for interfacing with 3.3 V logic systems.