Matsushita Electric CQ-C8403W, Service Manual

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10.2. Display Block
IC901 : C2CBKJ000195
Pin
No.
Port Part Name &
Description
I/O (V)
1 NC Not connected - -
2 DCLK SLV4 Slave D-CLK4 (Clock
for image data) I 1.5
3 UART SS4 GND - 0
4 UART SS3 GND - 0
5 D DIS Disable for Anode
drive (Disable for
image signal) O 0
6 PADJ IO2 Anode output pulse
width adjusting data 2
(Image data) O 3.8
7 DCLK SLV3 Slave D-CLK 3 (Clock
for image data) I 1.5
8 NC Not connected - -
9 NC Not connected - -
10 NC Not connected - -
11 KS1 Key scan 1 O 0
12 KS2 Key scan 2 O 0
13 KS3 Key scan 3 O 0
14 NC Not connected - -
15 BUS BYTE GND - 0
16 CNVSS CPU rewrite mode/
Single CPU mode
selection for Flash
writer I 0
17 IADJ Anode output current
adjusting data
(Luminance control) O 0
18 I CLK Clock for anode
output current
adjusting data O 0
19 RESET Reset from main CPU I 4.4
20 X1 Ceramic oscillator
clock (8MHz) O 2.5
21 GND GND - 0
22 X0 Ceramic oscillator
clock (8MHz) I 2.2
23 VCC5.0V Power supply - 4.6
24 NMI Pulled up to H - 4.6
25 Y SYNC Cathode scan data
and Cathode latch
control (Vertical sync.) O 0
26 NC Not connected - -
27 NC Not connected - -
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