41
X2
O
System main clock. (10 MHz)
42
X1
I
43
GND
–
Ground
44
XT2
O
System sub clock. (32.768 kHz)
45
XT1
I
46
GND
–
Ground
47
KEY IN K1
I
48
KEY IN K2
I
Key input. (analog)
49
KEY IN
I
50
GND
–
51
GND
–
52
GND
–
Ground
53
GND
–
54
GND
–
55
AV
DD
–
Analog power 5V.
56
AV
REF
I
Analog system reference voltage input.
57
GND
–
Ground
58
SDATA
O
Flourescent indicator tube data output. (IC601)
59
SCK
O
Flourescent indicator tube clock output. (IC601)
60
CS
O
Flourescent indicator tube chip select signal output. (IC601)
61
RESET
O
Flourescent indicator tube reset signal output. (IC601)
62
ERRORS
I
63
CORRECTION
O
Not used. (open)
64
RECEIVED
O
Pin No.
Pin Name
I/O
Function
– 10 –
Summary of Contents for CDP-EX770
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