972-A

System Overview

The C8051F97x device family are fully integrated, mixed-signal system-on-a- chip MCUs. Highlighted features are listed below. Refer to Table 4.1 for specific product feature selection and part ordering numbers.
■Core:
● Pipelined CIP-51 Core
● Fully compatible with standard 8051 instruction set
● 70% of instructions execute in 1-2 clock cycles
● 25 MHz maximum operating frequency
■Memory:
● 16-32 kB flash; in-system programmable in 512-byte sectors
● 4352-8448 bytes RAM (including 256 bytes standard 8051 RAM and 4-8 kB on- chip XRAM)
■Power:
● Ultra low power consumption in active and sleep modes.
● Power-on reset circuit and brownout detectors
■ Capacitive Sensing:
● Supports button and slider elements
● 40 us/channel conversion time
● 16-bit resolution
● Auto scan and wake-on-touch
● Auto-accumulate up to 64 samples
■I/O:
● Up to 43 total multifunction I/O pins:
● Flexible peripheral crossbar for peripheral routing
■Clock Sources:
● Precision internal oscillator: 24.5 MHz ±2%
● Low Power Oscillator: 20 MHz ±20%
● Low-frequency internal oscillator: 16.4 kHz
● External crystal, RC, C, and CMOS options
■Timers/Counters and PWM:
● 3-channel Programmable Counter Array (PCA) supporting PWM, capture/compare,
frequency output modes, and watchdog timer function
● 4x 16-bit general-purpose timers
■Communications and Other Digital Peripherals:
● UART
● SPI™
● I2C / SMBus™
● High-Speed I2C Slave
● 16-bit CRC Unit, supporting automatic CRC of flash at 256-byte boundaries
■Analog:
● 10-bit Analog-to-Digital Converter (ADC) (300 ksps)
■Digital:
● 7-channel DMA
● 16 x 16 Multiply and Accumulate hardware
■Unique Identifier:
● 128-bit unique key for each device
■On-Chip Debugging