
EPSON PhotoPC 850Z
Revision A
Operating Principles
Operating Principles of Circuit Boards
53
Table 2-3. 8-bit Microprocessor Port Specification
Pin
Signal Name
I/O
Outline
1
CHG VOL
I
Strobe charge coltage input (analog input)
2, 3
NOT USED
-
Connected to GND
4-7
SCAN IN 0-3
I
Key matrix input
8
AVDD
-
Analog power input terminal
9
AVREF
I
Analog standard voltage input terminal
10
/STBY (R) LED
O
Standby LED (Red) drive, L: LED light
11
/STBY (G) LED
O
Standby LED (Green) drive, L: LED light
12
VSS
-
GND
13
/SELF LED
O
Self-timer LED drive, L: LED light
14
/STATUS LED
O
Viewfinder LED drive, L: LED light
15-19
NOT USED
-
Connected to GND
20
/AVREF ON
O
Analog standard voltage ON/OFF signal, L: ON
21
NOT USED
-
-
22
CHG ON
O
Strobe charge ON/OFF signal
23-25
COM1-COM3
O
Mode LCD common output
26
NOT USED
-
-
27
BIAS
-
Mode LCD drive power supply (VLCO)
28-30
VLC0-VLC2
-
Mode LCD power input terminal
31
VSS
-
GND
32-51
S1-S20
O
LCD segment output 1-20
52-55
NOT USED
-
-
56
Ver. DET
O
Pull up
57-59
/SCAN IN 4-6
I
Key matrix input
64
WAKE UP
O
SPARC Wake up terminal
65
BARRIER M -
O
Barrier motor drive signal, H: ON
66
BARRIER M +
O
Barrier motor drive signal, H: ON
67
BARRIER SW
O
Barrier motor regulator control signal, H: ON
68
NTZ PAL
O
NTSC/PAL system switch signal, H: ON
69
NOT USED
-
-
70
PA ON
O
DC/DC converter (analog) On/Off signal, H: ON
71
P ON
O
DC/DC converter (digital) On/Off signal, H:ON
72
/DIN CONNECT
I
PC cable connection detection, H: Connection
73
/CARD
I
Memory card detection, L: Attachment
74
/AV JACK
I
Video cable connection detection, L: Connection
75
SI
I
Serial data input (
←
ASIC)
76
SO
O
Serial data input (
→
ASIC)
77
SCK
O
Serial clock output (
→
ASIC)
78
IC
-
Internal connection (to VSS terminal directly)
79
XOUT
O
Main clock oscillation terminal
80
XIN
I
Main clock oscillation terminal (4MHz)
81
VDD
-
VDD
82
XCIN
I
Clock oscillation terminal (32.768kHz)
83
XCOUT
O
Clock oscillation terminal
84
/RESET
I
Reset input
85
/BAT OFF
I
Battery OFF detection signal
86
RXD
I
Host wake up input terminal, L: ON
87
/SREQ
I
Serial communication request sig., L: Serial Req.
88
USB
I
USB cable connection detection, L: Connection
89
BARRIER SW0
I
Barrier position detection signal
Table 2-3. 8-bit Microprocessor Port Specification (Continued)
Pin
Signal Name
I/O
Outline
Содержание PhotoPC 850Z
Страница 1: ...EPSONPhotoPC850Z Digital Still Camera ...
Страница 5: ...Revision Status Revision Date of Issue Description A September 16 1999 First Release ...
Страница 9: ... PRODUCTDESCRIPTION ...
Страница 38: ... OPERATINGPRINCIPLES ...
Страница 57: ... TROUBLESHOOTING ...
Страница 60: ... DISASSEMBLYANDASSEMBLY ...
Страница 89: ... ADJUSTMENT ...
Страница 102: ... MAINTENANCE ...
Страница 105: ... APPENDIX ...
Страница 107: ......
Страница 109: ...EPSON PhotoPC 850Z Revision A Appendix Circuit Boards Component Layout 109 Figure 7 2 CA2 Circuit Board ca2patter ...
Страница 111: ...EPSON PhotoPC 850Z Revision A Appendix Circuit Boards Component Layout 111 Figure 7 5 PW1 Circuit Board ...
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Страница 125: ...s i e m e n s ...