Z51F3220FNX Datasheet, PDF (271/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
11.15.8 Register Description for LCD Driver
LCDCRH (LCD Driver Control High Register) : 9AH
7
6
5
4
3
–
–
–
COMCHG
–
–
–
–
R/W
–
2
1
0
–
LCDDR
DISP
–
R/W
R/W
Initial value : 00H
COMCHG
LCDDR
DISP
Common Signal Output Port Change Control
0
COM0 – COM3 signals are outputted through the P37-P34
1
COM0 – COM3 signals are outputted through the P33-P30
NOTES)
1. The COM0/COM1/COM2/COM3 signals can be outputted through
the P33/P32/P31/P30, respectively.
2. For example, the COM0 signal may be outputted to P33 pin if the
P3FSR.3 is “1b” and the COMCHG bit is “1b”.
3. Refer to the port3 function selection register (P3FSR).
4. Available only below the 1/4 duty.
LCD Driving Resistor for Bias Select
0
Internal LCD driving resistors for bias
1
External lCD driving resistors for bias
LCD Display Control
0
Display off
1
Normal display on
PS029902-0212
PRELIMINARY
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