C8051F97X View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

C8051F97X

Low Power Capacitive Sensing MCU with up to 32 kB of Flash

Silicon Laboratories 

2. 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

With on-chip power-on reset, voltage supply monitor, watchdog timer, and clock oscillator, the C8051F97x devices

are truly standalone system-on-a-chip solutions. The flash memory is re-programmable in-circuit, providing non-

volatile data storage and allowing field upgrades of the firmware.

Rev 1.1

22

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