參數(shù)資料
型號: ST52513F3
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: MICROCONTROLLER, PDSO20
封裝: ROHS COMPLIANT, SOP-20
文件頁數(shù): 87/136頁
文件大?。?/td> 2791K
代理商: ST52513F3
7.6.1 Configuration Registers.
Port A Pull-Up Register (PORT_A_PULLUP)
Configuration Register 24 (018h) Read/Write
Reset Value: 0000 0000 (00h)
Bit 7-0: PUA7-0 Port A pull-up (see Table 7.1)
0: Port A pin without pull-up
1: Port A pin with pull-up
Port A Option Register (PORT_A_OR)
Configuration Register 25 (019h) Read/Write
Reset Value: 0000 0000 (00h)
Bit 7-0: ORA7-0 Port A option (see Table 7.1)
Port A Data Direction Register (PORT_A_DDR)
Configuration Register 26 (01Ah) Read/Write
Reset Value: 0000 0000 (00h)
Bit 7-0: DDRA7-0 Port A direction (see Table 7.1)
0: Port A pin configured as input
1: Port A pin configured as output
Port A Alternate Function (PORT_A_AF)
Configuration Register 27 (01Bh) Read/Write
Reset Value: 0000 0000 (00h)
Bit 7: AFA7 Alternate Function PA7
0: Digital I/O
1: INT
Bit 6: AFA6 Alternate Function PA6
0: Digital I/O
1: T0OUT
Bit 5: AFA5 Alternate Function PA5
0: Digital I/O
1: TCLK
Bit 4: AFA4 Alternate Function PA4
0: Digital I/O
1: TSTRT
Bit 3: AFA3 Alternate Function PA3
0: Digital I/O
1: RX
Bit 2: AFA2 Alternate Function PA2
0: Digital I/O
1: T1OUT
Bit 1: AFA1 Alternate Function PA1
0: Digital I/O
1: SDA
Bit 0: AFA0 Alternate Function PA0
0: Digital I/O
1: SCL
70
PUA7
PUA6
PUA5
PUA4
PUA3
PUA2
PUA1
PUA0
70
ORA7
ORA6
ORA5
ORA4
ORA3
ORA2
ORA1
ORA0
70
DDRA7 DDRA6 DDRA5 DDRA4 DDRA3 DDRA2 DDRA1 DDRA0
70
AFA7
AFA6
AFA5
AFA4
AFA3
AFA2
AFA1
AFA0
Table 7.1 Pin mode configuration
MODE
PU
OR
DDR
Input high impedance
0
Input with pull-up
1
0
Interrupt without pull-up
0
1
0
Interrupt with pull-up
1
0
Output push-pull
0
1
Output with pull-up
1
0
1
Output open drain
0
1
Output weak pull-up
1
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