Z89323 Datasheet, PDF (6/61 Pages) Zilog, Inc. – 16-BIT DIGITAL SIGNAL PROCESSORS

PIN DESCRIPTION (Continued)
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
44 43 42 41 40 39 38 37 36 35 34
1
33
2
32
3
31
4
30
5
29
Z89323/373
6
44-Pin QFP
28
7
27
8
26
9
25
10
24
11
23
12 13 14 15 16 17 18 19 20 21 22
/RES
WAIT
P24/UO2
P22/UO0
CLK0
CLK1
/DS
P23/UO1
EA2
EA1
EA0
Figure 4. 44-Pin QFP Z89323/373 Pin Configuration
No. Symbol
1 EXT3/P03
2 EXT4/P04
3V
SS
4 EXT5/P05
5 EXT6/P06
6 EXT7/P07
7 P21/INT1
8 EXT8/P08
9 EXT9/P09
10 V_SS
11 EXT10/P010
12 EXT11/P011
13 VAHI
14 VALO
15 ANGND
16 AN0
17 AN1
18 AN2
19 AN3
20 ANVCC
21 V
DD
22 RD//WR
Table 3. 44-Pin QFP Z89323/373 Pin Description
Function
Direction No. Symbol
Function
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
In/Output
In/Output
In/Output
In/Output
23 EA0
24 EA1
25 EA2
26 P23/UO1
27 /DS
Ext Address 0
Ext Address 1
Ext Address 2
Port 2 3/User Output 1
Ext Data Strobe
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
A/D Input 1
A/D Input 2
A/D Input 3
Analog Power
Power
R/W External Bus
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
Input
Input
Input
Input
Input
Input
Input
Input
Output
28 CLKI
29 CLKO
30 P22/UO0
31 P24/UO2
32 WAIT
33 /RES
34 V
SS
35 EXT0/P00
36 EXT1/P01
37 EXT2/P02
38 V_SS
39 P20/INT0
40 EXT12/P012
41 EXT13/P013
42 EXT14/P014
43 V
SS
44 EXT15/P015
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
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
Direction
Output
Output
Output
In/Output
Output
Input
Input
In/Output
In/Output
Input
Input
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
In/Output
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DS95DSP0101 Q4/95