80
DEH-P840MP,P8400MP,P8450MP
-
Pin Functions (PD5745A)
Pin No.
Pin Name
I/O
Function and Operation
1-5
NC
Not used
6
BYTE
I
GND connection
7
CNVSS
I
GND connection
8, 9
NC
Not used
10
reset
I
Reset input
11
XOUT
O
Crystal oscillating element connection pin
12
VSS
VSS connection
13
XIN
I
Crystal oscillating element connection pin
14
VDD
VDD connection
15
nmi
I
NVI input
16-19
NC
Not used
20
CKC
O
Fixed pulse output for cathode driver
21
NC
Not used
22
CKA
O
Fixed pulse output for anode driver
23
NC
Not used
24
LS
O
Line sink signal output
25
NC
Not used
26
CKD
O
Data transport / driver clock output
27
DPDT
I
Display data input
28
KYDT
O
Key data output
29
DA2
O
Display data MSB output
30
NC
Not used
31
CLK1
I
Clock input for UART1
32
ILMD
O
Dual illumination select output
33
DA1
O
Display data LSB output
34
NC
Not used
35
CLK0
I
Clock input for UART0
36
NC
Not used
37
rdy
I
Pull up
38
NC
Not used
39
hold
I
Pull up
40,41
NC
Not used
42
rd
O
Read strobe output
43-45
NC
Not used
46
cs@
O
Bank address select output
47
cs!
O
Bank address select output
48
cs)
O
External ROM chip select output
Address bus 19 output
Not used
Address bus 17-9 output
VDD connection
Address bus 8 output
GND connection
Address bus 7-1 output
Not used
Data bus 15-0 input / output
key strobe input / output
Not used
key data input
94
AVSS
VSS connection
95
KD1
I
key data input
96
VREF
VSS connection
97
AVCC
VCC connection
98-100
NC
Not used
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