AT91SAM7S64C-AU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT91SAM7S64C-AU

AT91SAM ARM-based Flash MCU

Atmel Corporation 

Table 27-2. Register Mapping (Continued)

Offset

0x0070

0x0074

0x0078

Register

Peripheral A Select Register(5)

Peripheral B Select Register(5)

AB Status Register(5)

Name

PIO_ASR

PIO_BSR

PIO_ABSR

Access

Write-only

Write-only

Read-only

Reset

–

–

0x00000000

0x007C

to

0x009C

Reserved

0x00A0

Output Write Enable

PIO_OWER

Write-only

–

0x00A4

Output Write Disable

PIO_OWDR

Write-only

–

0x00A8

Output Write Status Register

PIO_OWSR

Read-only

0x00000000

0x00AC

Reserved

Notes: 1. Reset value of PIO_PSR depends on the product implementation.

2. PIO_ODSR is Read-only or Read/Write depending on PIO_OWSR I/O lines.

3. Reset value of PIO_PDSR depends on the level of the I/O lines. Reading the I/O line levels requires the clock of the PIO

Controller to be enabled, otherwise PIO_PDSR reads the levels present on the I/O line at the time the clock was disabled.

4. PIO_ISR is reset at 0x0. However, the first read of the register may read a different value as input changes may have

occurred.

5. Only this set of registers clears the status by writing 1 in the first register and sets the status by writing 1 in the second

register.

SAM7S Series [DATASHEET]

6175M–ATARM–26-Oct-12

249

Share Link: