AT90CAN128-16AE ATMEL Corporation, AT90CAN128-16AE Datasheet - Page 34
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AT90CAN128-16AE
Manufacturer Part Number
AT90CAN128-16AE
Description
8-bit Avr Microcontroller With 128K Bytes of Isp Flash And CAN Controller.flash (Kbytes) 128 Vcc (V) 2.7-5.5 EEPROM (Kbytes) 4 SRAM (bytes) 4K CAN (mess. Obj.) 15
Manufacturer
ATMEL Corporation
Datasheet
1.AT90CAN128-16AE.pdf
(391 pages)
- Current page: 34 of 391
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General Purpose I/O
Registers
General Purpose I/O Register
2 – GPIOR2
General Purpose I/O Register
1 – GPIOR1
General Purpose I/O Register
0 – GPIOR0
34
AT90CAN128
The AT90CAN128 contains three General Purpose I/O Registers. These registers can
be used for storing any information, and they are particularly useful for storing global
variables and status flags.
The General Purpose I/O Register 0, within the address range 0x00 - 0x1F, is directly
bit-accessible using the SBI, CBI, SBIS, and SBIC instructions.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
GPIOR07 GPIOR06 GPIOR05 GPIOR04 GPIOR03 GPIOR02 GPIOR01 GPIOR00
GPIOR17 GPIOR16 GPIOR15 GPIOR14 GPIOR13 GPIOR12 GPIOR11 GPIOR10
GPIOR27 GPIOR26 GPIOR25 GPIOR24 GPIOR23 GPIOR22 GPIOR21 GPIOR20
R/W
R/W
R/W
7
0
7
0
7
0
R/W
R/W
R/W
6
0
6
0
6
0
R/W
R/W
R/W
5
0
5
0
5
0
R/W
R/W
R/W
4
0
4
0
4
0
R/W
R/W
R/W
3
0
3
0
3
0
R/W
R/W
R/W
2
0
2
0
2
0
R/W
R/W
R/W
1
0
1
0
1
0
R/W
R/W
R/W
0
0
0
0
0
0
4250C–CAN–03/04
GPIOR2
GPIOR1
GPIOR0
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