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5
PD5797A (OEL CONT ASSY : IC1901)
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3 7 63 1515 0
• Microcomputer
Pin Function
No.
Mark
1
P94
2
P93
3
P92
4
P91
5
P90
6
BYTE
7
CNVSS
8
P87
9
P86
10
RESET
11
XOUT
12
VSS
13
XIN
14
VCC
15
NMI
16
P84
17
P83
18
P82
19
P81
20
P80
TE
21
P77
L 13942296513
22
P76
23
P75
24
P74
25
P73
26
P72
27
P71
28
P70
29
TxD1
30
RxD1
31
P65
32
P64
33
P63
34
P62
35
P61
36
P60
37
RDY
38
P56
39
HOLD
40
P56
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Pin Name
I/O
CS
O
Chip select output
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
External bus width switch (L: 16 bit width, H: 8 bit width, Connect to VSS when does not
BYTE
I
use external data bus.)
Processor mode (L: Single chip (memory expansion) mode, H: Microprocessor mode /
CNVSS
I
"H" at download
GND
I
Not used
(NC)
O
Not used
OELXRST
I
Use it as reset at reset / download.
XOUT
O
Ceramic oscillator connection pin
−
VSS1
GND
XIN
I
Ceramic oscillator connection pin
−
VCC1
VCC
NMI
I
NMI input (VDD pull-up)
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
OELDTI
O
Communication data output of OEL controller
(NC)
O
Not used
(NC)
O
Not used
TXD1
O
Not used / TxD output at download
DISPDAT/RXD1
I
Display data input / RxD input at download
CLK1
O
Not used / SCLK input at download
RTS1
O
Not used / RTS1 (BUSY) output at download
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
(NC)
O
Not used
XRDY
I
OEL controller ready input
(NC)
O
Not used
HOLD
I
(VCC pull-up / GND at download)
(NC)
O
Not used
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2 9
8
Pin Function
Q Q
3
6 7
1 3
1 5
co
.
XV-DV1000
7
9 4
2 8
0 5
8
2 9
9 4
2 8
m
8
9 9
A
B
C
9 9
D
E
F
155
8
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