iC-VRV
BIDIRECTIONAL µP INTERFACE TO 24V
Rev A2, Page 3/12
PACKAGES PLCC44 to JEDEC Standard
PIN CONFIGURATION PLCC44
(top view)
PIN FUNCTIONS PLCC44
No. Name
Function
Description
Bus Data Bit 3
Address
Address
Chip Select
No. Name
Function
Description
1
D3
B
I
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
COM
IO0
Diodes, common cathode
I/O Stage 0
2
A0
B
3
A1
I
I
GND01
IO1
IO2
GND23
IO3
VCCA
n.c.
n.c.
n.c.
VCCD
D4
D5
Ground Stage 0+1
I/O Stage 1
I/O Stage 2
Ground Stage 2+3
I/O Stage 3
+5 V Supply (analog section)
4
5
CSN
n.c.
B
B
6
7
8
9
WRN
RDN
RESN
BLFQ
CLK
INTN
GNDD
n.c.
n.c.
n.c.
GNDA
IO4
GND45
IO5
I
I
I
I
I
O
Write Enable
Read Enable
Reset
Clock, flashing function
Clock, filter function
Interrupt Report
Digital Ground
B
10
11
12
13
14
15
16
17
18
19
20
21
22
+5 V Supply (digital section)
Bus Data Bit 4
Bus Data Bit 5
Bus Data Bit 6
Bus Data Bit 7
B
B
B
B
D6
D7
Analog Ground
I/O Stage 4
Ground Stage 4+5
I/O Stage 5
I/O Stage 6
Ground Stage 6+7
I/O Stage 7
B
39(*) CTEST
40 D0
41(*) ENERR
B
Bus Data Bit 0
B
B
IO6
GND67
IO7
42
43
D1
D2
B
B
Bus Data Bit 1
Bus Data Bit 2
B
44(x) CERR
*: pin needs external wiring to Ground
x: pin should left open
Function: I = Input, O = Output, B = bidirectional
ICHAUS [ IC-HAUS GMBH ]
