Table 1 ZD1051 Pin Assignment and Description
Pin No.
Pin Name
1
NC
2
FECE1#
3
GND
4
EPRD#
5
DL0
6
DL8
7
DL1
8
DL9
9
DL2
10
DL10
11
VDD18
12
DL3
13
DL11
14
VDD33
15
DL4
16
DL12
17
DL5
18
DL13
19
GND
20
DL6
21
DL14
22
DL7
23
DL15
24
A16
25
NC
26
VDD18
27
EPWR#
28
WP#
29
NC
30
NC
31
A17
32
VPP#
33
A9
34
A0
35
A10
36
GND
37
A3
38
A11
39
A2
40
A12
41
A1
42
SRAMW#
43
VDD18
44
DH8
45
DH7
46
DH9
47
DH6
48
DH10
49
DH5
50
DH11
51
DH4
52
GND
53
VDD33
54
DH12
55
DH3
56
DH13
57
DH2
2003/6 From 3JTech
I/O
Description
I
Reserved
O
Chip select signal for program memory
Power
Digital ground
O
Read strobe signal for program memory
I/O
Low speed data bus bit 0
I/O
Low speed data bus bit 8
I/O
Low speed data bus bit 1
I/O
Low speed data bus bit 9
I/O
Low speed data bus bit 2
I/O
Low speed data bus bit 10
Power
1.8V power
I/O
Low speed data bus bit 3
I/O
Low speed data bus bit 11
Power
3.3V power
I/O
Low speed data bus bit 4
I/O
Low speed data bus bit 12
I/O
Low speed data bus bit 5
I/O
Low speed data bus bit 13
Power
Digital ground
I/O
Low speed data bus bit 6
I/O
Low speed data bus bit 14
I/O
Low speed data bus bit 7
I/O
Low speed data bus bit 15
O
Address bus bit 16
O
Reserved
Power
1.8V power
O
Write strobe signal for program memory
O
Write protect signal for FEPROM
O
Reserved
O
Reserved
O
Address bus bit 17
Control power supply for FEPROM programming and
O
erasing
O
Address bus bit 9
O
Address bus bit 0
O
Address bus bit 10
Power
Digital ground
O
Address bus bit 3
O
Address bus bit 11
O
Address bus bit 2
O
Address bus bit 12
O
Address bus bit 1
O
Write strobe signal for SRAM
Power
1.8V power
I/O
High speed data bus bit 8
I/O
High speed data bus bit 7
I/O
High speed data bus bit 9
I/O
High speed data bus bit 6
I/O
High speed data bus bit 10
I/O
High speed data bus bit 5
I/O
High speed data bus bit 11
I/O
High speed data bus bit 4
Power
Digital ground
Power
3.3V power
I/O
High speed data bus bit 12
I/O
High speed data bus bit 3
I/O
High speed data bus bit 13
I/O
High speed data bus bit 2
Revision 1.0
Research & Development
Page 6 of
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