AT91SAM9G45-CU Просмотр технического описания (PDF) - Atmel Corporation

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производитель

AT91SAM9G45-CU

AT91SAM ARM-based Embedded MPU

Atmel Corporation 

Table 3-1. Signal Description List (Continued)

Signal Name

Function

Type

Active Reference

Level

Voltage Comments

Shutdown, Wakeup Logic

SHDN

Shut-Down Control

Output

VDDBU

Driven at 0V only.

0: The device is in backup

mode

1: The device is running (not in

backup mode).

WKUP

Wake-Up Input

Input

VDDBU

Accept between 0V and

VDDBU.

ICE and JTAG

TCK

Test Clock

Input

VDDIOP0

No pull-up resistor, Schmitt

trigger

TDI

Test Data In

Input

VDDIOP0

No pull-up resistor, Schmitt

trigger

TDO

Test Data Out

Output

VDDIOP0

TMS

Test Mode Select

Input

VDDIOP0

No pull-up resistor, Schmitt

trigger

JTAGSEL

JTAG Selection

Input

VDDBU

Pull-down resistor (15 kΩ).

RTCK

Return Test Clock

Output

VDDIOP0

Reset/Test

NRST

Microcontroller Reset (2)

Open drain output.

I/O

Low

VDDIOP0 Pull-Up resistor (100 kΩ),

Schmitt trigger

TST

Test Mode Select

Input

VDDBU

Pull-down resistor (15 kΩ),

Schmitt trigger

NTRST

Test Reset Signal

Input

Pull-Up resistor (100 kΩ),

VDDIOP0

Schmitt trigger.

BMS

Boot Mode Select

Input

VDDIOP0

Must be connected to GND or

VDDIOP0.

DRXD

DTXD

Debug Receive Data

Debug Transmit Data

Debug Unit - DBGU

Input

(1)

Output

(1)

Advanced Interrupt Controller - AIC

IRQ

External Interrupt Input

Input

(1)

FIQ

Fast Interrupt Input

Input

(1)

PIO Controller - PIOA- PIOB - PIOC - PIOD - PIOE

PA0 - PA31

Parallel IO Controller A

I/O

(1)

Pulled-up input at reset

(100kΩ)(3), Schmitt trigger

PB0 - PB31

Parallel IO Controller B

I/O

(1)

Pulled-up input at reset

(100kΩ)(3), Schmitt trigger

PC0 - PC31

Parallel IO Controller C

I/O

(1)

Pulled-up input at reset

(100kΩ)(3), Schmitt trigger

SAM9G45 [DATASHEET]

5

6438K–ATARM–12-Feb-13

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