t6020m ATMEL Corporation, t6020m Datasheet - Page 23

• Manufacturer Part Number: t6020m
• Description: Low-current Microcontroller For Watchdog Function
• Manufacturer: ATMEL Corporation

Port 5 Data Register (P5DAT)
Port 5 Control Register (P5CR) Byte Write
P5xM2, P5xM1 – Port 5x Interrupt mode/direction code
Rev. A3, 02-Apr-01
P5DAT
P5CR
3 2 1 0
x x 1 1 BP50 in input mode – interrupt disabled
x x 0 1 BP50 in input mode – rising edge interrupt
x x 1 0 BP50 in input mode – falling edge interrupt
x x 0 0 BP50 in output mode – interrupt disabled
1 1 x x BP51 in input mode – interrupt disabled
0 1 x x BP51 in input mode – rising edge interrupt
1 0 x x BP51 in input mode – falling edge interrupt
0 0 x x BP51 in output mode – interrupt disabled
Code
Auxiliary Address: ’5’hex
First write cycle
Second write cycle
P5DAT3
Bit 3
Function
First Write Cycle
P5DAT2
Bit 2
P51M2
P53M2
Bit 3
Bit 7
P5DAT1
Bit 1
P51M1
P53M1
Bit 2
Bit 6
3 2 1 0
x x 1 1
x x 0 1
x x 1 0
x x 0 0
1 1 x x
0 1 x x
1 0 x x
0 0 x x
Code
P5DAT0
P50M2
P52M2
Bit 1
Bit 5
Bit 0
BP52 in input mode – interrupt disabled
BP52 in input mode – rising edge interrupt
BP52 in input mode – falling edge interrupt
BP52 in output mode – interrupt disabled
BP53 in input mode – interrupt disabled
BP53 in input mode – rising edge interrupt
BP53 in input mode – falling edge interrupt
BP53 in output mode – interrupt disabled
Second Write Cycle
P50M1
P52M1
Bit 0
Bit 4
Auxiliary register address: ’5’hex
Primary register address: ’5’hex
Function
T6020M
Reset value: 1111b
Reset value: 1111b
Reset value: 1111b
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