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