NXP Semiconductors S9S08SG8E2CSC

Overview

S9S08SG8E2CSC from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 8 KB flash, 512 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 extended temperature operation.

For engineers reviewing the S9S08SG8E2CSC datasheet, S9S08SG8E2CSC pinout, S9S08SG8E2CSC application, or S9S08SG8E2CSC equivalent, key selection criteria include its 16-pin TSSOP package, -40°C to 150°C operating range, single-wire BDM debug interface, and on-chip real-time counter with 1 kHz internal oscillator for wake-up in all power modes.

Technical Context

The S9S08SG8E2CSC 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 bus frequencies from 2 MHz to 20 MHz with ±1.5% deviation over -40°C to 125°C and ±3% above 125°C.

Peripherals are designed for embedded control: the 12-channel 10-bit ADC achieves 2.5 µs conversion time and runs in stop3 mode; the analog comparator supports edge-triggered interrupts and routing to TPM; the RTC provides free-running timekeeping using an on-chip 1 kHz low-power oscillator, eliminating external timing components.

Key Specifications

Pinout & Package

Package: 16-pin Thin Shrink Small Outline Package (TSSOP), lead-free, RoHS-compliant, thermal performance rated for 150°C junction operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08SG4CSC and S9S08SG16E2CSC, the S9S08SG8E2CSC delivers optimal balance of memory size, thermal robustness, and peripheral integration for mid-complexity automotive and industrial controllers - avoiding over-specification while ensuring design longevity.

Availability

S9S08SG8E2CSC is available at Aetrix Electronics and suitable for automotive body electronics, industrial temperature monitoring, smart actuator control, and low-power sensor node applications requiring stable component supply across extended temperature ranges.

Supply support for S9S08SG8E2CSC 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 S9S08SG8E2CSC belongs to NXP's legacy HCS08 microcontroller family, engineered for cost-sensitive, high-reliability embedded control in automotive body electronics and industrial systems where extended temperature operation and low-power responsiveness are critical.

FAQ

What is the maximum operating temperature supported by the S9S08SG8E2CSC?

The S9S08SG8E2CSC is qualified for continuous operation from -40°C to +150°C ambient temperature when packaged in the 16-TSSOP variant. This high-temperature rating is verified per AEC-Q100 stress test requirements and enables deployment in under-hood automotive applications where thermal margins are constrained. The S9S08SG8E2CSC maintains full functional specification across this range, including flash endurance and real-time counter accuracy.

Does the S9S08SG8E2CSC support in-circuit debugging, and what interface is used?

Yes, the S9S08SG8E2CSC supports in-circuit debugging via a single-wire Background Debug Mode (BDM) interface using the BKGD/MS pin. It includes one hardware breakpoint register and an on-chip in-circuit emulation (ICE) module with two comparators and nine trigger modes. The S9S08SG8E2CSC does not require a dedicated JTAG connector, reducing PCB footprint and simplifying debug setup for production programming and field diagnostics.

Can the S9S08SG8E2CSC operate without an external crystal or resonator?

Yes, the S9S08SG8E2CSC can operate entirely from its internal clock source (ICS), which includes a frequency-locked loop (FLL) driven by a precision-trimmed internal reference. The ICS supports bus frequencies from 2 MHz to 20 MHz with ±1.5% deviation over -40°C to 125°C. The S9S08SG8E2CSC also integrates a 1 kHz low-power oscillator for RTC operation in all power modes - eliminating need for external timing components in many applications.

What power-saving modes are available on the S9S08SG8E2CSC, and which peripherals remain active in stop3 mode?

The S9S08SG8E2CSC offers Run, Wait, Stop2, and Stop3 modes. In Stop3 mode - its deepest low-power state - the S9S08SG8E2CSC disables the CPU, flash, and most clocks while retaining operation of the RTC, analog comparator (ACMP), and ADC. These peripherals can generate wake-up events, allowing the S9S08SG8E2CSC to monitor analog thresholds or maintain timekeeping with sub-microamp quiescent current, ideal for battery-backed or energy-harvesting systems.

Is the S9S08SG8E2CSC pin-compatible with other members of the SG8 family, such as the MC9S08SG4 or S9S08SG16?

Yes, the S9S08SG8E2CSC shares identical pinout and package dimensions with the MC9S08SG4CSC and S9S08SG16E2CSC in the 16-TSSOP configuration. All three devices use the same peripheral register map and instruction set, enabling hardware interchangeability and software scalability. The S9S08SG8E2CSC serves as the mid-tier option - offering twice the flash and RAM of the SG4 while costing less than the SG16 - making it a common choice for production ramp and design reuse.