AT91SAM9G10-CU Просмотр технического описания (PDF) - Atmel Corporation

Номер в каталоге

Компоненты Описание

производитель

AT91SAM9G10-CU

AT91 ARM Thumb-based Microcontrollers

Atmel Corporation 

AT91SAM9G10

9.2 Reset Controller

• Based on two Power-on-Reset cells

• Status of the last reset

– Either cold reset, first reset, soft reset, user reset, watchdog reset, wake-up reset

• Controls the internal resets and the NRST pin output

9.3 Shutdown Controller

• Shutdown and Wake-up logic:

– Software programmable assertion of the SHDN pin

– Deassertion Programmable on a WKUP pin level change or on alarm

9.4 General-purpose Backup Registers

• Four 32-bit general-purpose backup registers

9.5 Clock Generator

• Embeds the Low-power 32,768 Hz Slow Clock Oscillator

– Provides the permanent Slow Clock to the system

• Embeds the Main Oscillator

– Oscillator bypass feature

– Supports 3 to 20 MHz crystals

• Embeds Two PLLs

– Outputs 80 to 300 MHz clocks

– Integrates an input divider to increase output accuracy

– 1 MHz minimum input frequency

• Provides SLCK, MAINCK, PLLACK and PLLBCK.

Figure 9-2. Clock Generator Block Diagram

XIN32

XOUT32

Clock Generator

Slow Clock

Oscillator

XIN

XOUT

Main

Oscillator

Slow Clock

SLCK

Main Clock

MAINCK

PLLRCA

PLL and

Divider A

PLLA Clock

PLLACK

PLLRCB

PLL and

Divider B

PLLB Clock

PLLBCK

Status Control

Power

Management

Controller

21

6462A–ATARM–03-Jun-09

Share Link: