JVC KD-S790 Service Manual page 33

QQ
4.5 PT6523LQ (IC601) : LCD driver 3 7 63 1515 0
• Pin layout
• Block diagram
TE
L 13942296513
• Piin function
Pin No. Pin Name
1~ 52 SG1 ~ SG52
53~55 COM1 ~ COM3
56 VDD
57 INH
58 VDD1
59 VDD2
60 VSS
61 OSC
62 CE
63 CLK
64 DI
Note 1:
www
When INH = "LOW" : Serial data trensfers can be performed when the display is forcibly OFF.
.
http://www.xiaoyu163.com
48 ~ 33
49 32
64 17
1 ~ 16
COMMON
DRIVER
CLOCK
GENERATOR
ADDRESS
DETECTOR
I/O
O Segment Output Pins
O Common Driver Output Pins
- Power Supply
I Display OFF Control Input Pin
When this pin is "Low", the Display is forcibly turned OFF. (SG1 to SG52, COM1 to COM3 are
set to "LOW"). (See Note 1)
When this pin is set to "High", the Displa is ON.
I Used for the 2/3 Bias Voltage when the Bias Voltages are provied externally. Connect to VDD2
when 1/2 Bias is used.
I Used for 1/3 Bias Voltage when the Bias Voltages are provided externally. Connect to VDD1
when 1/2 Bias is used.
- Ground Pin.
I/O Oscillation Input /Outout Pin
I Chip Enable Pin
I Synchronization Clock
I Transfer Data Pin
x ao
y
i
http://www.xiaoyu163.com
8
SEGMENT DRIVER & LATCH
SHIFT REGISTER
Q Q
3 6 7 1 3
Description
u163
.
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
m
co
KD-S790
9 9
2 8 9 9
(No.49788)1-33