Z51F3220FNX Datasheet, PDF (82/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
P3FSR (Port 3 Function Selection Register) : EEH
7
6
5
4
P3FSR7
P3FSR6
P3FSR5
P3FSR4
R/W
R/W
R/W
R/W
3
P3FSR3
R/W
2
P3FSR2
R/W
1
0
P3FSR1
P3FSR0
R/W
R/W
Initial value : 00H
P3FSR7
P3FSR6
P3FSR5
P3FSR4
P3FSR3
P3FSR2
P3FSR1
P3FSR0
P37 Function select
0
I/OPort
1
COM0 Function
P36 Function Select
0
I/OPort
1
COM1 Function
P35 Function select
0
I/OPort
1
COM2/SEG0 Function
P34 Function Select
0
I/OPort
1
COM3/SEG1 Function
P33 Function select
0
I/OPort
1
COM4/SEG2 or COM0 Function
P32 Function Select
0
I/OPort
1
COM5/SEG3 or COM1 Function
P31 Function select
0
I/OPort
1
COM6/SEG4 or COM2/SEG4 Function
P30 Function Select
0
I/OPort
1
COM7/SEG5 or COM3/SEG5 Function
NOTES) 1. The P30-P35 is automatically configured as common or segment signal according to the duty in the
LCDCRL register when the pin is selected as the sub-function for common/segment.
2. The COM0-COM3 signals can be outputted through the P33-P30 pins. Refer to the LCD drive control
high register (LCDCRH).
.
PS029902-0212
PRELIMINARY
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