NXP Semiconductors S9S08SG16E1MTGR

Overview

S9S08SG16E1MTGR 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.

For engineers reviewing the S9S08SG16E1MTGR datasheet, S9S08SG16E1MTGR pinout, S9S08SG16E1MTGR application, or S9S08SG16E1MTGR equivalent, key selection criteria include FLASH size vs. MC9S08SG32, TSSOP-16 package constraints, stop-mode power consumption, internal clock source accuracy (±1.5% over -40°C to 125°C), and background debug interface compatibility.

Technical Context

The S9S08SG16E1MTGR implements the HCS08 CPU core with HC08 instruction set extension, supporting up to 32 interrupt/reset sources and single-wire background debug. Its memory map allocates 16,384 bytes of FLASH (0x1860–0x7FFF), 1,024 bytes of RAM (0x0080–0x047F), and 26,528 unimplemented bytes - distinct from the SG32 variant's 32 KB FLASH layout.

Peripherals include a 16-channel 10-bit ADC with 2.5 µs conversion time and internal bandgap reference, two 2-channel TPM modules supporting edge-aligned PWM, and an RTC with free-running 1 kHz low-power oscillator that operates in all MCU modes including stop3. The ICS module provides bus frequencies from 2 MHz to 20 MHz using FLL with factory-trimmed internal reference.

Key Specifications

Pinout & Package

16-pin Thin Shrink Small Outline Package (TSSOP), 0.65 mm pitch, JEDEC MO-153 compliant. Exposed pad not present; thermal resistance 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 MC9S08SG32E1MTGR, S9S08SG16E1MTGR trades FLASH capacity for lower unit cost and smaller code footprint; versus S9KEAZ128AMLH, it offers proven toolchain continuity and lower power in simple control tasks without architectural migration overhead.

Availability

S9S08SG16E1MTGR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart appliance motor controllers, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S9S08SG16E1MTGR 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 formed from the spin-off of Philips' semiconductor division, now specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The S9S08SG16E1MTGR belongs to the legacy HCS08 microcontroller family designed for cost-effective, low-power embedded control in automotive and industrial applications where deterministic real-time response and long-term supply stability are critical.

FAQ

What is the maximum bus frequency supported by the S9S08SG16E1MTGR?

The S9S08SG16E1MTGR 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) module with FLL enabled and proper trimming. At temperatures above 125°C, the maximum bus frequency is reduced to 36 MHz to maintain reliability. The S9S08SG16E1MTGR datasheet specifies these limits in the Electrical Characteristics section under ICS Frequency Specifications.

Does the S9S08SG16E1MTGR support in-system programming via its background debug interface?

Yes, the S9S08SG16E1MTGR supports in-system programming through its single-wire background debug (BKGD/MS) interface. This allows firmware updates and debugging without removing the device from the target PCB. Programming requires a compatible debugger such as the NXP Multilink or OSJTAG, and the S9S08SG16E1MTGR must be in active background mode, initiated by asserting BKGD/MS during reset. The interface supports flash erase, program, and verify operations per the S9S08SG16E1MTGR Flash Programming User Guide.

What is the ADC resolution and conversion time for the S9S08SG16E1MTGR?

The S9S08SG16E1MTGR features a 10-bit successive approximation ADC with 16 input channels and a typical conversion time of 2.5 µs. It includes an internal bandgap reference and temperature sensor channel. The ADC operates in run, wait, and stop3 modes, enabling low-power sensing. Full specifications-including INL, DNL, and voltage reference accuracy-are detailed in the S9S08SG16E1MTGR datasheet Section 9 (Analog-to-Digital Converter) and Appendix A (Electrical Characteristics).

Can the S9S08SG16E1MTGR operate without an external crystal?

Yes, the S9S08SG16E1MTGR can operate without an external crystal by using its Internal Clock Source (ICS) module. The ICS employs a frequency-locked loop (FLL) with a factory-trimmed internal reference oscillator, delivering bus frequencies from 2 MHz to 20 MHz with ±1.5% accuracy over -40°C to +125°C. External crystals (1–16 MHz) are optional and used only when higher timing precision is required, such as for LIN or UART communication with strict baud rate tolerance.

What power-saving modes does the S9S08SG16E1MTGR support, and what is the lowest current draw?

The S9S08SG16E1MTGR supports multiple low-power modes: wait mode, stop2, and stop3. In stop3 mode-with RTC enabled and all clocks gated-the typical current draw is less than 1 µA at 25°C. This mode retains RAM content and allows wake-up via RTC overflow, external interrupt, or low-voltage warning. The S9S08SG16E1MTGR datasheet Table 3-2 (Current Consumption Summary) and Section 3.6.1 specify these values under defined supply and temperature conditions.