NXP Semiconductors S9S08SG4E2CSC

Overview

S9S08SG4E2CSC 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 with internal clock source supporting 2–20 MHz bus speeds and runs in extended temperature range up to 125 °C. Used in automotive body electronics, industrial sensor nodes, and low-power embedded control systems.

For engineers reviewing the S9S08SG4E2CSC datasheet, S9S08SG4E2CSC pinout, S9S08SG4E2CSC application, or S9S08SG4E2CSC equivalent, key selection criteria include its 16-pin TSSOP package, stop3-mode operation for ultra-low-power wake-up, single-wire background debug interface, and support for LIN-compliant SCI with extended break generation.

Technical Context

The S9S08SG4E2CSC implements the HCS08 CPU core with HC08 instruction set plus BGND, supporting up to 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 to 125 °C.

Peripherals include a 12-channel 10-bit ADC with 2.5 µs conversion time and internal temperature sensor, dual 2-channel TPM modules supporting edge- or center-aligned PWM, and real-time counter (RTC) with free-running 1 kHz on-chip oscillator enabling cyclic wake-up in all power modes.

Key Specifications

Pinout & Package

16-pin TSSOP (Thin Shrink Small Outline Package), surface-mount, 0.65 mm pitch, thermal pad not included. Pinout validated per MC9S08SG4 datasheet Rev. 8, Section 2.1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08SG4E2CSC, MC9S08SG8CSC offers double flash/RAM in identical 16-TSSOP packaging for seamless scalability, while S9S08SG16E2CSC trades temperature rating for increased memory-making both viable alternatives depending on firmware size and environmental requirements.

Availability

S9S08SG4E2CSC is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and low-power embedded control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S9S08SG4E2CSC 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 S9S08SG4E2CSC belongs to the HCS08 SG-series microcontrollers, designed specifically for cost-sensitive, low-power embedded applications requiring robust analog integration, LIN/SCI communication, and extended temperature operation in harsh environments.

FAQ

What is the maximum operating frequency of the S9S08SG4E2CSC CPU core?

The S9S08SG4E2CSC CPU core operates at up to 40 MHz under standard conditions (–40 to 105 °C). At temperatures above 125 °C, the maximum frequency is reduced to 36 MHz to ensure timing compliance and reliability. This derating is documented in the MC9S08SG8/SG4 datasheet Rev. 8, Section 1.1, and applies directly to the S9S08SG4E2CSC variant.

Does the S9S08SG4E2CSC support LIN bus communication?

Yes, the S9S08SG4E2CSC supports LIN 2.x-compliant communication via its SCI module, which includes dedicated hardware features for LIN master extended break generation and LIN slave extended break detection. These capabilities are confirmed in the "Peripherals" section of the MC9S08SG8/SG4 datasheet Rev. 8, and apply identically to the S9S08SG4E2CSC due to shared silicon and functional specification.

What power-saving modes are available on the S9S08SG4E2CSC?

The S9S08SG4E2CSC supports two very low-power stop modes (Stop2 and Stop3), a reduced-power wait mode, and a very low-power real-time interrupt that remains active in run, wait, and stop modes. Stop3 mode is especially valuable-it maintains RTC and ACMP functionality while drawing less than 1 µA, as specified in Section 3.6 of the MC9S08SG8/SG4 datasheet Rev. 8.

Can the S9S08SG4E2CSC operate in automotive under-hood environments?

Yes, the S9S08SG4E2CSC is qualified for operation from –40 °C to +125 °C ambient temperature, meeting AEC-Q100 stress test requirements for automotive applications. Its design includes low-voltage detection with selectable trip points, COP watchdog with independent 1-kHz clock, and FLASH block protection-features explicitly validated for under-hood use cases in the MC9S08SG8/SG4 datasheet Rev. 8.

Is there on-chip debug capability for the S9S08SG4E2CSC?

Yes, the S9S08SG4E2CSC includes a single-wire background debug interface (BDM) with breakpoint capability and an on-chip in-circuit emulation (ICE) debug module containing two comparators, nine trigger modes, and an eight-deep FIFO. This debug infrastructure is fully documented in Chapter 17 of the MC9S08SG8/SG4 datasheet Rev. 8 and is functionally identical across all SG4/SG8 variants including the S9S08SG4E2CSC.