NXP Semiconductors S9S08SG4E2VTG

Overview

S9S08SG4E2VTG from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 4 KB flash, 256 B RAM, and integrated peripherals including 10-bit ADC, analog comparator, SCI, SPI, I²C, TPM PWM timers, and RTC. It operates at up to 40 MHz CPU frequency, supports stop3 low-power mode, and targets automotive body electronics and industrial control applications requiring AEC-Q100 qualification.

For engineers reviewing the S9S08SG4E2VTG datasheet, S9S08SG4E2VTG pinout, S9S08SG4E2VTG application, or S9S08SG4E2VTG equivalent, key selection criteria include its 16-pin TSSOP package, -40°C to 125°C temperature rating, single-wire background debug interface, and support for LIN-compliant SCI with extended break generation.

Technical Context

The S9S08SG4E2VTG implements the HCS08 CPU core with HC08 instruction set extension (including BGND), supporting up to 32 interrupt/reset sources and a 3-stage pipeline. 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.

Peripherals are tightly integrated with power management: ADC and ACMP remain functional in stop3 mode; RTC runs on a free-running 1 kHz on-chip oscillator; and SCI supports wake-up on active edge. The MCU includes FLASH block protection, COP watchdog with dedicated 1-kHz clock option, and low-voltage detect with configurable trip points.

Key Specifications

Pinout & Package

Package: 16-pin Thin Shrink Small Outline Package (TSSOP), lead-free, RoHS-compliant, 4.4 mm × 5.0 mm footprint. Pin pitch: 0.65 mm. Thermal pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08SG4E2VTG, MC9S08SG8CTJ offers direct pin-compatible upgrade path with doubled memory, while S9S08SG16E2VTG provides greater scalability at the cost of package redesign - both retain identical peripheral configuration and debug interface behavior.

Availability

S9S08SG4E2VTG is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart HVAC actuators, and medical infusion pump controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S9S08SG4E2VTG 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, now specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The S9S08SG4E2VTG belongs to NXP's legacy HCS08 microcontroller family, designed specifically for cost-sensitive, reliability-critical embedded control in automotive and industrial environments where AEC-Q100 compliance and low-power operation are mandatory.

FAQ

What is the maximum operating frequency of the S9S08SG4E2VTG CPU core?

The S9S08SG4E2VTG CPU core operates at up to 40 MHz under standard conditions (-40°C to 125°C). At temperatures above 125°C, the maximum frequency is derated to 36 MHz to maintain timing integrity and electrical performance. This specification is guaranteed across the full supply voltage range of 2.7 V to 5.5 V and is documented in the Electrical Characteristics section of the MC9S08SG8 data sheet, which covers the S9S08SG4E2VTG.

Does the S9S08SG4E2VTG support LIN communication natively?

Yes, the S9S08SG4E2VTG supports LIN communication through its SCI module, which includes hardware-assisted LIN master extended break generation and LIN slave extended break detection. These features are implemented in silicon and require no external transceiver for basic LIN node functionality. The S9S08SG4E2VTG SCI meets LIN 2.0 physical layer timing requirements when paired with a compliant transceiver.

What power-saving modes are available on the S9S08SG4E2VTG?

The S9S08SG4E2VTG supports three primary low-power modes: wait mode (CPU stopped, peripherals active), stop2 (deep sleep with limited peripheral wake-up), and stop3 (ultra-low-power mode where RTC, ADC, and ACMP remain operational). Stop3 draws less than 1 µA typical and retains RAM contents, making it ideal for battery-powered sensor wake-on-event applications. All modes are controlled via the SPMSC1 and SPMSC2 registers.

Is the S9S08SG4E2VTG pin-compatible with other members of the SG8/SG4 family?

Yes, the S9S08SG4E2VTG in 16-TSSOP package shares identical pinout with MC9S08SG8CTJ and other 16-pin variants in the same family. This includes matching signal assignments for VDD, VSS, RESET, BKGD/MS, all I/O ports (PTA0–PTA7, PTB0–PTB4), and peripheral functions like SCI, SPI, and I²C. No PCB redesign is required when migrating between these 16-pin devices.

What debug interface does the S9S08SG4E2VTG use, and what capabilities does it provide?

The S9S08SG4E2VTG uses a single-wire background debug (BDM) interface accessible via the BKGD/MS pin. It supports in-circuit debugging with one hardware breakpoint, on-chip emulation (ICE) with two comparators and nine trigger modes, and an eight-deep FIFO for flow tracing. Debug access requires no dedicated debug header - only VDD, VSS, and BKGD/MS connections to a compatible debugger such as the NXP DEMO9S08SG8 board or standalone BDM pod.