The S3F8S28 MCU is member of Zilog's S3F8 Series of S3 MCUs, and offers a fast and efficient Z8-compatible CPU, 8KB of Flash memory, and a wide range of integrated peripherals.

The S3 Family CPU features an efficient register-oriented architecture and a sophisticated interrupt controller that allow for fast context switching. Flash memory is CPU-programmable and offers a 128-byte sector size. The internal oscillator is switchable between 8 MHz, 4 MHz, 2 MHz, 1 MHz, and 0.5 MHz for low-power applications. The 13-channel, 12-bit ADC and two 14-bit PWM modules make this device perfect for small appliance sensing applications such as ceiling fans, smoke detectors, PIR motion detectors, battery chargers, LED lighting control, and oven controllers.

Additional features including a UART, I²C master/slave and two 16-bit timers provide functions necessary for system expansion, board-level management and external communications.

The S3F8S28 MCU is offered in the following 6 package types:

• 20-pin DIP

• 20-pin SOP

• 20-pin SSOP

• 24-pin SOP

• 24-pin TSSOP

• Pellet (Die)

For technical assistance with this or any of Zilog's S3 Family of products, log in to Zilog's Technical Support interface to create a support ticket, and select S3 Family from the Product Line menu. For sales inquiries, please contact a Zilog S3 Family sales representative.

Third Party Tools for Zilog's S3 Family of products are listed on our Third Party Tools page.

• SAM88 Z8-compatible CPU core

• 8 KB internal Flash program memory

• 128-byte sector size

• CPU programmable with LDC instruction

• Fast 25 µs byte programming time

• 272 bytes general-purpose register RAM area

• 78 CISC instructions

• 17 interrupt sources with 8 programmable priorities

• 18/22 programmable GPIO pins

• 12-bit SAR A/D converter with 13 analog inputs

• Low-Voltage Reset controller (LVR) programmable to 1.9V, 2.3V, 3.0V and 3.9V

• Low-Voltage Detector (LVD) programmable to 2.1V, 2.5V, 3.2V and 4.1V