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Z89323 Datasheet, PDF (3/61 Pages) Zilog, Inc. – 16-BIT DIGITAL SIGNAL PROCESSORS
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PIN DESCRIPTION
PRELIMINARY
Z89323/373/393
16-BIT DIGITAL SIGNAL PROCESSORS
EXT3/P03
EXT4/P04
VSS
EXT5/P05
EXT6/P06
EXT7/P07
INT1/P21
EXT8/P08
EXT9/P09
VSS
EXT10/P010
6 5 4 3 2 1 44 43 42 41 40
7
39
8
38
9
37
10
36
11
35
12
Z89323/373
34
44-Pin PLCC
13
33
14
32
15
31
16
30
17
29
18 19 20 21 22 23 24 25 26 27 28
/RES
WAIT
P24/UO2
P22/UO0
CLKO
CLKI
/DS
P23/UO1
EA2
EA1
EA0
No. Symbol
1 P20/INT0
2 EXT12/P012
3 EXT13/P013
4 EXT14/P014
5V
SS
6 EXT15/P015
7 EXT3/P03
8 EXT4/P04
9
VSS
10 EXT5/P05
11 EXT6/P06
12 EXT7/P07
13 P21/INT1
14 EXT8/P08
15 EXT9/P09
16 V
SS
17 EXT10/P010
18 EXT11/P011
19 VAHI
20 VALO
21 ANGND
22 AN0
Figure 2. 44-Pin PLCC Z89323/373 Pin Configuration
Table 1. 44-Pin PLCC Z89323/373 Pin Description
Function
Port 2 0/Interrupt 0
Ext Data 12/Port 0 12
Ext Data 13/Port 0 13
Ext Data 14/Port 0 14
Ground
Ext Data 15/Port 0 15
Ext Data 3/Port 0 3
Ext Data 4/Port 0 4
Ground
Ext Data 5/Port 0 5
Ext Data 6/Port 0 6
Ext Data 7/Port 0 7
Port 2 1/Interrupt 1
Ext Data 8/Port 0 8
Ext Data 9/Port 0 9
Ground
Ext Data 10/Port 0 10
Ext Data 11/Port 0 11
Analog High Ref.
Analog Low Ref.
Analog Ground
A/D Input 0
Direction
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
Input
Input
Input
Input
No. Symbol
23 AN1
24 AN2
25 AN3
26 ANVCC
27 V
DD
28 RD//WR
29 EA0
30 EA1
31 EA2
32 P23/UO1
33 /DS
34 CLKI
35 CLKO
36 P22/UO0
37 P24/UO2
38 WAIT
39 /RES
40 V
SS
41 EXT0/P00
42 EXT1/P01
43 EXT2/P02
44 V
SS
Function
A/D Input 1
A/D Input 2
A/D Input 3
Analog Power
Power
R/W External Bus
Ext Address 0
Ext Address 1
Ext Address 2
Port 2 3/User Output 1
Ext Data Strobe
Clock/Crystal In
Clock/Crystal Out
Port 2 2/User Output 0
Port 2 4/User Output 2
Wait for Ext
Reset
Ground
Ext Data 0/Port 0 0
Ext Data 1/Port 0 1
Ext Data 2/Port 0 2
Ground
DS95DSP0101 Q4/95
Direction
Input
Input
Input
Input
Output
Output
Output
Output
In/Output
Output
Input
Input
In/Output
In/Output
Input
Input
In/Output
In/Output
In/Output
3
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