71
DEH-P9000R
-
Pin Functions (PD5471A)
Pin No.
Pin Name
I/O
Format
Function and Operation
1–4
NC
Not used
5
REM
I
Remote control reception
6
BYTE
I
External data BUS width select input
7
CNVSS
I
Processor mode select input
8,9
NC
Not used
10
reset
I
Reset input
11
XOUT
O
Crystal oscillating element connection pin
12
VSS
GND
13
XIN
I
Crystal oscillating element connection pin
14
VDD
VDD
15
nmi
I
NMI input
16
NC
Not used
17–20
kd1-4
I
Key data 1-4
21–26
ks1-6
I/O
Key strobe input/output 1-6
27–31
NC
Not used
32
ILMD
O
C
Dual illumination
33
KYDT
O
C
Key data output
34
DPDT
I
Display data input
35
NC
Not used
36
OEL
O
C
OEL controller ON
37
rdy
I
OEL controller ready input
38
NC
Not used
39
hold
I
Hold input
40,41
NC
Not used
42
rd
O
C
Read strobe
43
NC
Not used
44
wr
O
C
Write strobe
45
NC
Not used
46
cs2
O
C
Bank address (High)
47
cs1
O
C
Bank address (Low)
48
cs0
O
C
External ROM chip select
49
A19
O
C
Address bus Output
50
NC
Not used
51-59
A17-9
O
C
Address bus Output
60
VDD
VDD
61
A8
O
C
Address bus Output
62
VSS
GND
63–69
A7-1
O
C
Address bus Output
70
NC
Not used
71–86
D15-0
I/O
Data bus input/output
87–93
NC
Not used
94
AVSS
Connect to VSS
95
NC
Not used
96
VREF
Connect to VSS
97
AVCC
Connect to VCC
98-100
NC
Not used
Format
Meaning
C
C MOS
*PD5471A
25
26
50
51
75
76
100
1
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