
S1C62N33 TECHNICAL SOFTWARE
EPSON
II-55
CHAPTER 5: PERIPHERAL CIRCUITS (LCD Driver)
Table 5.5 I/O data memory map (LCD driver)
LCD driver memory
map
*
1 Initial value following initial reset
*
5 Always "0" when being read
*
2 Not set in the circuit
*
6 Refer to main manual
*
3 Undefined
*
7 Page switching in I/O memory is
*
4 Reset (0) immediately after being read
not necessary
The sequence for specifying LCD static drive is as follows:
Write "1" to the register at address "78H.D3".
Write the same value to all registers corresponding to the
segment memory COM0–COM3.
The following is an example of switching LCD drive when the
segment memory is allocated to C0H–EFH.
Example of switch-
ing LCD drive
Address
Comment
Register
D3
D2
D1
D0
Name
SR *1
10
78H
CSDC
ETI2
ETI8
ETI32
R/W
CSDC
ETI2
ETI8
ETI32
0
Static
Enable
Dynamic
Mask
LCD drive switch
Interrupt mask register (clock timer 2 Hz)
Interrupt mask register (clock timer 8 Hz)
Interrupt mask register (clock timer 32 Hz)
*7