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ST7LITE30 Datasheet(PDF) 49 Page - STMicroelectronics

Part # ST7LITE30
Description  8-BIT MCU WITH SINGLE VOLTAGE FLASH, DATA EEPROM, ADC, TIMERS, SPI, LINSCI
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7LITE30 Datasheet(HTML) 49 Page - STMicroelectronics

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I/O PORTS (Cont’d)
The I/O port register configurations are summa-
rised as follows.
Standard Ports
PA7:0, PB6:0
Interrupt Ports
Ports where the external interrupt capability is
selected using the EISR register
Table 10. Port Configuration (Standard ports)
Note: On ports where the external interrupt capability is selected using the EISR register, the configura-
tion will be as follows:
Table 11. Port Configuration (external interrupts)
Table 12. I/O Port Register Map and Reset Values
MODE
DDR
OR
floating input
0
0
pull-up input
0
1
open drain output
1
0
push-pull output
1
1
MODE
DDR
OR
floating input
0
0
pull-up interrupt input
0
1
Port
Pin name
Input (DDR=0)
Output (DDR=1)
OR = 0
OR = 1
OR = 0
OR = 1
Port A
PA7:0
floating
pull-up
open drain
push-pull
Port B
PB6:0
floating
pull-up
open drain
push-pull
Port
Pin name
Input with interrupt (DDR=0 ; EISR
≠00)
OR = 0
OR = 1
Port A
PA6:1
floating
pull-up
Port B
PB5:0
floating
pull-up
Address
(Hex.)
Register
Label
7
6
5
4
3
2
1
0
0000h
PADR
Reset Value
MSB
1
1
1
1
1
1
1
LSB
1
0001h
PADDR
Reset Value
MSB
0
0
0
0
0
0
0
LSB
0
0002h
PAOR
Reset Value
MSB
0
1
0
0
0
0
0
LSB
0
0003h
PBDR
Reset Value
MSB
1
1
1
1
1
1
1
LSB
1
0004h
PBDDR
Reset Value
MSB
0
0
0
0
0
0
0
LSB
0
0005h
PBOR
Reset Value
MSB
0
0
0
0
0
0
0
LSB
0
1


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