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DX-SX1H
IC802 RH-iX1535GEZZ: Input/Output Expander (IX1535GE) (2/2)
Pin No.
Terminal Name
60
MODE
61
BUFCO
62
TEST
63
BUFCI
64
VSS
Pins 1 to 15: Simultaneous changes possible. Operating frequency: approx. 10MHz
Pins 18 to 47: Simultaneous changes possible. (Static signal) Operating frequency: approx. 1kHz
Pins 50 to 57: Simultaneous changes almost impossible. Operating frequency: approx. 1kHz
VDD
VDD
EXPD(3)
SOUT(3)
EXPD(4)
SOUT(4)
EXPD(5)
SOUT(5)
BUFDO
BUFDI
SBUFBO
SBUFBI
SBUFAO
SBUFAI
MRST
MRST
MODE
MODE
BUFCO
SEL
TEST
TEST
BUFCI
CK
VSS
VSS
Input/Output
Input
Mode switching terminal. Fix at "L".
Input/Output
Buffer output C
Input
Test terminal. Fixed at "L".
Input
Buffer input C. Not used.
—
Digital GND
INPUT/
OUTPUT
PINS
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
49
50
Data Buffer
51
Latch D
52
53
54
55
56
57
58
59
60
61
62
63
R/W CTL
64
1
2
3
4
5
6
INPUT/OUTPUT
PINS
Figure 58 BLOCK DIAGRAM OF IC
Function
INPUT/
OUTPUT
PINS
Data Buffer
Latch C
Data Buffer
7
8
9 10 11 12 13 14 15 16
INPUT/OUTPUT PINS
OPEN DRAIN WHEN
OUTPUTTING
– 58 –
VSS
VSS
32
EXPBL(3)
Q2(3)
31
EXPBL(2)
Q2(2)
30
EXPBL(1)
Q2(1)
29
EXPBL(0)
Q2(0)
28
EXPAU(3)
Q1(7)
27
EAPAU(2)
Q1(6)
26
VDD
VDD
25
VSS
VSS
24
EXPAU(1)
Q1(5)
23
EXPAU(0)
A1(4)
22
EXPAL(3)
Q1(3)
21
EAPAL(2)
Q1(2)
20
EXPAL(1)
Q1(1)
19
EAPAL(0)
Q1(0)
18
VDD
VDD
17
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