C8051F989-GM View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

C8051F989-GM

Ultra Low Power, 8-2 kB Flash, Capacitive Sensing MCU

Silicon Laboratories 

C8051F99x-C8051F98x

15.1. Normal Mode

The MCU is fully functional in normal mode. Figure 15.1 shows the on-chip power distribution to various

peripherals. There are two supply voltages powering various sections of the chip: VDD and the 1.8 V inter-

nal core supply. All analog peripherals are directly powered from the VDD pin. All digital peripherals and the

CIP-51 core are powered from the 1.8 V internal core supply. RAM, PMU0 and the SmaRTClock are

always powered directly from the VBAT pin in sleep mode and powered from the core supply in all other

power modes.

VDD

1.8 to 3.6 V

Sleep

PMU0

SmaRTClock

GPIO

Analog Peripherals

VREG0

Active/Idle/

Stop/Suspend 1.8 V

RAM

VREF

IREF0

A

M

U

ADC

+

X

TEMP

SENSOR

-

VOLTAGE

COMPARATOR

Digital Peripherals

CIP-51

Core

Flash

UART

SPI

Timers

SMBus

Figure 15.1. C8051F99x-C8051F98x Power Distribution

162

Rev. 1.0

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