System Overview
C8051F99x-C8051F98x 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.

■ Ultra low power consumption in active and sleep modes.
■ High-speed pipelined 8051-compatible microcontroller core (up to 25 MIPS)
■ In-system, full-speed, non-intrusive debug interface (on-chip)
■ 10-bit 300 ksps or 12-bit 75 ksps single-ended ADC with analog multiplexer
■ 6-bit programmable current reference (resolution can be increased with PWM)
■ Precision programmable 24.5 MHz internal oscillator with spread spectrum technology.
■ 8 kB , 4 kB, or 2 kB of on-chip Flash memory
■ 512 bytes of on-chip RAM
■ SMBus/I2C, Enhanced UART, and Enhanced SPI serial interfaces implemented in hardware
■ Four general-purpose 16-bit timers
■ Programmable counter/timer array (PCA) with three capture/compare modules and watchdog timer function
■ On-chip power-on reset, VDD monitor, and temperature sensor
■ One on-chip voltage comparator
■ Up to 14 Capacitive Touch (QuickSense™) Inputs
■ Up to 17 Port I/O