Abov MC97F2664, Руководство пользователя

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MC97F2664
90 April 11, 2014 Ver. 1.4
9.10 P7 Port
9.10.1 P7 Port Description
P7 is 5-bit I/O port. P7 control registers consist of P7 data register (P7), P7 direction register (P7IO), P7 pull-up
resistor selection register (P7PU) and P7 open-drain selection register (P7OD). Refer to the port function
selection registers for the P7 function selection.
9.10.2 Register description for P7
P7 (P7 Data Register) : C0H
7 6 5 4 3 2 1 0
P77 P76 P75 P74 P73 P72 P71 P70
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value : 00H
P7[7:0]
I/O Data
P7IO (P7 Direction Register) : D9H
7 6 5 4 3 2 1 0
P77IO P76IO P75IO P74IO P73IO P72IO P71IO P70IO
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value : 00H
P7IO[7:0]
P7 Data I/O Direction
0 Input
1 Output
NOTE) EC4/EC5/SS3 function possible when input
P7PU (P7 Pull-up Resistor Selection Register) : 100FH (XSFR)
7 6 5 4 3 2 1 0
P77PU P76PU P75PU P74PU P73PU P72PU P71PU P70PU
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value : 00H
P7PU[7:0]
Configure Pull-up Resistor of P7 Port
0 Disable
1 Enable
P7OD (P7 Open-drain Selection Register) : 1007H (XSFR)
7 6 5 4 3 2 1 0
P77OD P76OD P75OD P74OD P73OD P72OD P71OD P70OD
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value : 00H
P7OD[7:0]
Configure Open-drain of P7 Port
0 Push-pull output
1 Open-drain output