Oki ML63611, User Manual

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ML63611 User’s Manual
Chapter 10 Ports (INPUT, I/O PORT)
10 – 10
OPTION B (D): 1.5 V (3.0 V), With regulator
circuit for LCD bias
OPTION A (C): 1.5 V (3.0 V), Without regulator
circuit for LCD bias
(3) Port A control registers 0/1 (PACON0, PACON1)
PACON0 and PACON1 are 4-bit special function registers (SFRs) used to select port input/output mode.
The input mode may be pull-down resistor input, pull-up resistor input or high-impedance input.
The output mode may be CMOS output, N-channel open drain output, P-channel open drain output or high-
impedance output.
•
Port A
PA1MD1 PA1MD0 PA0MD1 PA0MD0
PACON0 (02AH)
(R/W)
bit 3 bit 2 bit 1 bit 0
Port A.1 input/output mode select
Input mode
bit 3
0
1
×
bit 2
Port A.0 input/output mode select
Input mode
bit 1
0
1
×
bit 0
Output mode
bit 3
0
0
1
1
bit 2
Output mode
bit 1
0
0
1
1
bit 0
PA3MD1 PA3MD0 PA2MD1 PA2MD0
PACON1 (02BH)
(R/W)
bit 3 bit 2 bit 1 bit 0
Port A.3 input/output mode select
Input mode
bit 3
0
1
×
bit 2
Port A.2 input/output mode select
Input mode
bit 1
0
1
×
bit 0
Output mode
bit 3
0
0
1
1
bit 2
Output mode
bit 1
0
0
1
1
bit 0
0 : Input with pull-up resistor
1 : High-impedance input
0 : Input with pull-up resistor
1 : High-impedance input
0 : CMOS output (initial value)
1 : High-impedance output
0 : CMOS output (initial value)
1 : N-channel open drain output
0 : P-channel open drain output
1 : High-impedance output
1 : N-channel open drain output
0 : P-channel open drain output
0 :
Input with pull-down resistor (initial value)
0 :
Input with pull-down resistor (initial value)
0 : Input with pull-up resistor
1 : High-impedance input
0 : Input with pull-up resistor
1 : High-impedance input
0 : CMOS output (initial value)
1 : High-impedance output
0 : CMOS output (initial value)
1 : N-channel open drain output
0 : P-channel open drain output
1 : High-impedance output
1 : N-channel open drain output
0 : P-channel open drain output
0 :
Input with pull-down resistor (initial value)
0 :
Input with pull-down resistor (initial value)