NXP Semiconductors S9S08SG16E1MTJR

Overview

S9S08SG16E1MTJR 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 embedded control in automotive body electronics and industrial sensors.

For engineers reviewing the S9S08SG16E1MTJR datasheet, S9S08SG16E1MTJR pinout, S9S08SG16E1MTJR application, or S9S08SG16E1MTJR equivalent, key selection criteria include its 28-pin TSSOP package, single-wire BDM debug interface, stop3 mode operation with ADC/ACMP/RTC active, LVD/LVW voltage monitoring, and SuperFlash® endurance of 100k program/erase cycles.

Technical Context

The S9S08SG16E1MTJR implements the HCS08 CPU core with HC08 instruction set extension, BGND support, and 32 interrupt/reset sources. Its internal clock source (ICS) uses a frequency-locked loop (FLL) with precision-trimmed internal reference enabling ±1.5% deviation over –40°C to 125°C.

Memory architecture includes 16 KB FLASH (with block protection and 100k cycle endurance), 1 KB RAM, and nonvolatile options register (NVOPT) for configuration retention. Peripherals operate in stop3 mode: ADC performs 2.5 µs conversions, ACMP generates edge-triggered interrupts, and RTC runs from 1 kHz low-power oscillator.

Key Specifications

Pinout & Package

28-pin Thin Shrink Small Outline Package (TSSOP), thermally enhanced with exposed pad, compatible with standard surface-mount reflow processes. Pinout validated per MC9S08SG32 Rev. 8 datasheet Figure 2-1 and Table 2-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08SG16E1MTJR, MC9S08SG32E1MTJR offers double FLASH capacity in identical packaging and debug interface-ideal for incremental feature expansion-while KE02Z32VQH2 provides modern ARM-based performance and peripheral breadth at the cost of increased design complexity and power consumption in active operation.

Availability

S9S08SG16E1MTJR 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 across extended temperature ranges and long product lifecycles.

Supply support for S9S08SG16E1MTJR 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 acquisition of Freescale Semiconductor in 2015.

The S9S08SG16E1MTJR belongs to the legacy HCS08 microcontroller family designed for cost-sensitive, reliability-critical embedded control in automotive and industrial environments where deterministic real-time response and extended temperature operation are essential.

FAQ

What is the maximum operating frequency of the S9S08SG16E1MTJR?

The S9S08SG16E1MTJR supports a maximum bus frequency of 40 MHz, achieved via its internal clock source (ICS) with frequency-locked loop (FLL). At temperatures above 125°C, the maximum bus frequency is reduced to 36 MHz to maintain timing integrity under thermal stress. This specification is guaranteed across the full –40°C to +125°C operating range per MC9S08SG32 Rev. 8 datasheet Section 11.1.

Does the S9S08SG16E1MTJR support in-circuit debugging?

Yes, the S9S08SG16E1MTJR includes a single-wire background debug (BDM) interface compliant with Freescale's BDM protocol. It supports real-time register inspection, memory read/write, and one hardware breakpoint. The on-chip debug module also provides two additional comparators and nine trigger modes for advanced trace and event capture during development of S9S08SG16E1MTJR-based systems.

What is the FLASH endurance rating for the S9S08SG16E1MTJR?

The S9S08SG16E1MTJR uses SuperFlash® technology licensed from SST, providing guaranteed endurance of 100,000 program/erase cycles per FLASH block. This rating is specified in MC9S08SG32 Rev. 8 datasheet Appendix A-16 and applies across the full operating temperature range. Endurance is maintained without requiring special erase sequencing or wear-leveling firmware.

Can the S9S08SG16E1MTJR operate in low-power stop modes with analog peripherals active?

Yes, the S9S08SG16E1MTJR supports stop3 mode, in which the ADC, ACMP, and RTC remain fully operational while the CPU and most clocks are halted. This enables wake-up on analog events (e.g., comparator output transition or ADC conversion complete) with typical stop3 current below 2 µA. The capability is documented in MC9S08SG32 Rev. 8 Section 3.6.1 and verified in electrical characteristics Table A-3.

Is the S9S08SG16E1MTJR pin-compatible with other devices in the SG-series?

The S9S08SG16E1MTJR is pin-compatible with the MC9S08SG32E1MTJR in the 28-pin TSSOP package, sharing identical pin assignments, electrical characteristics, and peripheral mappings. However, it is not pin-compatible with 16-pin or 20-pin SG-series variants due to differing pin counts and I/O allocations. Compatibility is confirmed in MC9S08SG32 Rev. 8 Section 2.1 and Figure 2-1.