NXP Semiconductors S9S08SG16E1VTJR

Overview

S9S08SG16E1VTJR 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, industrial sensors, and appliance motor control.

For engineers reviewing the S9S08SG16E1VTJR datasheet, S9S08SG16E1VTJR pinout, S9S08SG16E1VTJR application, or S9S08SG16E1VTJR equivalent, key selection criteria include its 28-pin TSSOP package, single-wire background debug interface, FLASH block protection, low-voltage detection with interrupt capability, and support for stop3 mode with RTC wake-up - all critical for cost-sensitive, safety-aware, and power-constrained designs.

Technical Context

The S9S08SG16E1VTJR implements the HCS08 CPU core with HC08 instruction set extension, BGND support, and 36 interrupt/reset sources. Its internal clock source (ICS) uses a frequency-locked loop (FLL) with precision-trimmed internal reference (0.2% resolution), enabling stable 2–20 MHz bus frequencies across voltage and temperature.

Peripherals are tightly integrated: the 16-channel 10-bit ADC achieves 2.5 µs conversion time and operates in stop3 mode; the analog comparator (ACMP) supports edge-triggered interrupts and routing to TPM; the real-time counter (RTC) runs on a dedicated 1 kHz low-power oscillator, enabling cyclic wake-up without external components in all MCU modes.

Key Specifications

Pinout & Package

28-pin Thin Shrink Small Outline Package (TSSOP), lead-free, RoHS-compliant. Body dimensions: 4.4 mm × 9.7 mm, 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08SG16E1VTJR, MC9S08SG32E1VTJR provides direct memory scalability without layout or firmware changes, while S9KEAZ128AMLH delivers architectural modernization at the cost of toolchain migration and increased BOM complexity - making S9S08SG16E1VTJR optimal for cost-sensitive, legacy-compatible, and resource-constrained implementations.

Availability

S9S08SG16E1VTJR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and smart appliance control requiring stable component supply, long-lifecycle support, and AEC-Q100-aligned qualification.

Supply support for S9S08SG16E1VTJR 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, IoT, and mobile applications, with deep heritage in microcontrollers dating back to Motorola and Freescale.

The S9S08SG16E1VTJR belongs to the HCS08 family - designed specifically for cost-optimized, high-reliability embedded control in harsh environments, emphasizing low power, robust debug, and integrated analog peripherals.

FAQ

What is the maximum operating temperature specification for the S9S08SG16E1VTJR?

The S9S08SG16E1VTJR is rated for operation from -40°C to +125°C ambient temperature. This extended range is validated per Freescale's high-temperature device specifications and supports deployment in under-hood automotive and industrial control environments where thermal stress is critical. The ICS module maintains 2–20 MHz bus frequency stability across this full range, and FLASH endurance is guaranteed over the same interval.

Does the S9S08SG16E1VTJR support in-circuit debugging, and what interface is used?

Yes, the S9S08SG16E1VTJR supports in-circuit debugging via a single-wire background debug (BDM) interface on the BKGD/MS pin. This interface enables full-speed execution control, register inspection, memory read/write, and breakpoint setting using standard Freescale/NXP BDM tools. No external debugger hardware beyond a BDM pod is required, and the interface remains functional even in low-power stop modes.

Can the S9S08SG16E1VTJR operate from an internal clock source without an external crystal?

Yes, the S9S08SG16E1VTJR can operate entirely from its internal clock source (ICS), which includes a frequency-locked loop (FLL) driven by a trimmed internal reference oscillator. This allows crystal-free operation at bus frequencies from 2 MHz to 20 MHz, with ±1.5% deviation over -40°C to +125°C. External crystals are optional and used only when higher timing precision (e.g., for LIN or RTC calibration) is required.

What power-saving modes are available on the S9S08SG16E1VTJR, and which peripherals remain active in stop3 mode?

The S9S08SG16E1VTJR supports Stop2, Stop3, Wait, and Run modes. In Stop3 mode - its deepest low-power state - the RTC continues running on its dedicated 1 kHz oscillator, and wake-up is supported via ACMP output, SCI receive activity, or GPIO pin change. The ADC, TPM, and SPI are disabled, but the RTC's ability to trigger wake-up every 1–256 seconds enables ultra-low-power periodic sensing without external circuitry.

Is the S9S08SG16E1VTJR pin-compatible with other members of the MC9S08SGxx family?

Yes, the S9S08SG16E1VTJR is pin-compatible with the MC9S08SG32E1VTJR and other 28-pin TSSOP variants in the SGxx family, including identical pin assignments for power, reset, BDM, I/O ports, and peripheral functions. Firmware developed for one variant can be reused on another with only FLASH size and memory map adjustments - simplifying platform scaling and second-sourcing strategies.