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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