Section 13 LCD Controller/Driver
Rev. 6.00 Aug 04, 2006 page 432 of 680
REJ09B0145-0600
13.1.2
Block Diagram
Figure 13.1 shows a block diagram of the LCD controller/driver.
φ
/2 to
φ
/256
φ
w
CL
2
CL
1
SEG
n,
DO
LPCR
LCR
LCR2
Display timing generator
LCD RAM
(32 bytes)
Internal data bus
40-bit shift
register
LCD drive power supply
Segment
driver
Common
data latch
Common
driver
M
V
1
V
2
V
3
V
SS
COM
1
COM
4
SEG
40
/CL
1
*
SEG
39
/CL
2
*
SEG
38
/DO
*
SEG
37
/M
*
SEG
36
SEG
1
Legend:
LPCR: LCD port control register
LCR: LCD control register
LCR2: LCD control register 2
Note:
*
The external expansion function for LCD segments is not implemented in the H8/38347 Group and H8/38447 Group.
V
0
Figure 13.1 Block Diagram of LCD Controller/Driver
Содержание H8/38342
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