ST7LITE20F2 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST7LITE20F2
STMicroelectronics
'ST7LITE20F2' PDF : 166 Pages View PDF
ST7LITE20F2 ST7LITE25F2 ST7LITE29F2
Table 26. Ports PA7:0, PB6:0 (continued)
Mode
Open drain output
Push-pull output
DDR
1
1
I/O ports
OR
0
1
Table 27.
Port
Port configuration (standard ports)
Pin name
Input
OR = 0
OR = 1
Port A
Port B
PA7:0
PB6:0
Floating
Floating
Pull-up
Pull-up
Output
OR = 0
OR = 1
Open drain
Open drain
Push-pull
Push-pull
Note:
On ports where the external interrupt capability is selected using the EISR register, the
configuration will be as follows:
Table 28.
Port
Port configuration (Interrupt ports)
Pin name
Input
OR = 0
OR = 1
Port A
Port B
PA7:0
PB6:0
Floating
Floating
Pull-up interrupt
Pull-up interrupt
Output
OR = 0
OR = 1
Open drain
Open drain
Push-pull
Push-pull
Interrupt ports
Table 29.
Ports where the external interrupt capability selected using the EISR
register
Mode
DDR
OR
Floating input
Pull-up interrupt input
Open drain output
Push-pull output
0
0
0
1
1
0
1
1
Table 30. I/O port register map and reset values
Address Register
(Hex.)
label
7
6
5
4
3
2
1
0
PADR
MSB
LSB
0000h
Reset value
1
1
1
1
1
1
1
1
PADDR
MSB
LSB
0001h
Reset value
0
0
0
0
0
0
0
0
PAOR
MSB
LSB
0002h
Reset value
0
1
0
0
0
0
0
0
Doc ID 8349 Rev 5
69/166
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