AT32UC3C1512C-AZR Atmel, AT32UC3C1512C-AZR Datasheet - Page 43

• Manufacturer Part Number: AT32UC3C1512C-AZR
• Description: Microcontrollers (MCU) 512KB FL,-40/125oC AUTO
• Manufacturer: Atmel

Specifications of AT32UC3C1512C-AZR

• Lead Free Status / Rohs Status: Details

Table 5-3.
5.4
9166BS–AVR-02/11
CPU Local Bus Mapping
Peripheral Address Mapping
0xFFFF6C00
0xFFFF6400
0xFFFF6800
0xFFFF7000
Some of the registers in the GPIO module are mapped onto the CPU local bus, in addition to
being mapped on the Peripheral Bus. These registers can therefore be reached both by
accesses on the Peripheral Bus, and by accesses on the local bus.
Mapping these registers on the local bus allows cycle-deterministic toggling of GPIO pins since
the CPU and GPIO are the only modules connected to this bus. Also, since the local bus runs at
CPU speed, one write or read operation can be performed per clock cycle to the local bus-
mapped GPIO registers.
The following GPIO registers are mapped on the local bus:
Table 5-4.
Port
0
Register
Output Driver Enable Register (ODER)
Output Value Register (OVR)
Pin Value Register (PVR)
DACIFB0
DACIFB1
Local bus mapped GPIO registers
ACIFA1
AW
Analog Comparators Interface - ACIFA1
DAC interface - DACIFB0
DAC interface - DACIFB1
aWire - AW
Mode
WRITE
SET
CLEAR
TOGGLE
WRITE
SET
CLEAR
TOGGLE
-
Local Bus
Address
0x4000_0040
0x4000_0044
0x4000_0048
0x4000_004C
0x4000_0050
0x4000_0054
0x4000_0058
0x4000_005C
0x4000_0060
AT32UC3C
Access
Write-only
Write-only
Write-only
Write-only
Write-only
Write-only
Write-only
Write-only
Read-only
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