System Overview

C8051F93x-C8051F92x devices are fully integrated mixed-signal System-on-a-Chip MCUs. Highlighted features are listed below. Refer to Table 2.1 for specific product feature selection and part ordering numbers.

• Single/Dual Battery operation with on-chip dc-dc boost converter.

• High-speed pipelined 8051-compatible microcontroller core (up to 25 MIPS)

• In-system, full-speed, non-intrusive debug interface (on-chip)

• True 10-bit 300 ksps 23-channel single-ended ADC with analog multiplexer

• 6-Bit Programmable Current Reference

• Precision programmable 24.5 MHz internal oscillator with spread spectrum technology.

• 64 kB or 32 kB of on-chip Flash memory

• 4352 bytes of on-chip RAM

• SMBus/I2C, Enhanced UART, and two Enhanced SPI serial interfaces implemented in hardware

• Four general-purpose 16-bit timers

• Programmable Counter/Timer Array (PCA) with six capture/compare modules and

Watchdog Timer function

• On-chip Power-On Reset, VDD Monitor, and Temperature Sensor

• Two On-chip Voltage Comparators with 23 Touch Sense inputs.

• 24 or 16 Port I/O (5 V tolerant)

Supply Voltage 0.9 to 3.6 V

- One-Cell Mode supports 0.9 to 1.8 V operation

- Two-Cell Mode supports 1.8 to 3.6 V operation

- Built-in dc-dc converter with 1.8 to 3.3 V output for use in one-cell mode

- Built-in LDO regulator allows a high analog supply voltage and low digital core voltage

- 2 built in supply monitors (brownout detectors)

10-Bit Analog to Digital Converter

- ±1 LSB INL; no missing codes

- Programmable throughput up to 300 ksps

- Up to 23 external inputs

- On-Chip Voltage Reference

- On-Chip PGA allows measuring voltages up to twice the reference voltage

- 16-bit Auto-Averaging Accumulator with Burst Mode

provides increased ADC resolution

- Data dependent windowed interrupt generator

- Built-in temperature sensor

Two Comparators

- Programmable hysteresis and response time

- Configurable as wake-up or reset source

- Up to 23 Capacitive Touch Sense Inputs

6-Bit Programmable Current Reference

- Up to ±500 µA. Can be used as a bias or for

generating a custom reference voltage

On-Chip Debug

- On-chip debug circuitry facilitates full-speed,

nonintrusive in-system debug (no emulator required)

- Provides breakpoints, single stepping

- Inspect/modify memory and registers

- Complete development kit

High-Speed 8051 µC Core

- Pipelined instruction architecture; executes 70 of

instructions in 1 or 2 system clocks

- Up to 25 MIPS throughput with 25 MHz clock

- Expanded interrupt handler

Memory

- 4352 bytes internal data RAM (256 + 4096)

- 64 kB (‘F93x) or 32 kB (‘F92x) Flash; In-system programmable

in 1024-byte sectors—1024 bytes are

reserved in the 64 kB devices

Digital Peripherals

- 24 or 16 port I/O; All 5 V tolerant with high sink 

current and programmable drive strength-Hardware

SMBus™ (I2C™ Compatible), 2 x SPI™, and UART

serial ports available concurrently

- Four general purpose 16-bit counter/timers

- Programmable 16-bit counter/timer array with six

capture/compare modules and watchdog timer

- Hardware SmaRTClock operates down to 0.9 V and

requires less than 0.5 µA supply current

Clock Sources

- Internal oscillators: 24.5 MHz, 2 accuracy

supports UART operation; 20 MHz low power

oscillator requires very little bias current

- External oscillator: Crystal, RC, C, or CMOS Clock

- SmaRTClock oscillator: 32 kHz Crystal or internal

self-oscillate mode

- Can switch between clock sources on-the-fly; useful

in implementing various power saving modes

Packages

- 32-pin QFN (5 x 5 mm)

- 24-pin QFN (4 x 4 mm)

- 32-pin LQFP (7 x 7 mm, easy to hand-solder)

Temperature Range: –40 to +85 °C