109
108
1
2
3
4
5
6
7
8
NC
NC
V
PE4/AS
PE6/SIZ0
PE7/SIZ1
R/W
PF0/MODCLK
PF1/IRQ1
PF2/IRQ2
PF3/IRQ3
PF4/IRQ4
PF5/IRQ5
PF6/IRQ6
PF7/IRQ7
BERR
V
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
SS
SS
FC0/CS3
FC1/CS4
FC2/CS5
ADDR19/CS6
ADDR20/CS7
ADDR21/CS8
ADDR22/CS9
ADDR23/CS10
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
V
V
DD
SS
PCLK
PWMB
PWMA
NC
HALT
RESET
B
NC
NC
V
SS
MC68331
V
V
NC
PAI
CLKOUT
DD
SS
V
NC
DD
XFC
V
GP7/IC4/OC5/OC1
PGP6/OC4
DD
EXTAL
V
V
V
DD
SS
DD
XTAL
V
NC
PGP5/OC3/OC1
PGP4/OC2/OC1
PGP3/OC1
PGP2/IC3
SS
FREEZE/QUOT
TSC
BKPT/DSCLK
IFETCH/DSI
IPIPE/DSO
RXD
PGP1/IC2
PGP0/IC1
NC
PQS7/TXD
V
NC
V
NC
SS
SS
331 144-PIN QFP
Figure B-2 144-Pin Plastic Surface Mount Package Pin Assignments
MC68331
MECHANICAL DATA AND ORDERING INFORMATION
MOTOROLA
B-3
USER’S MANUAL
MOTOROLA [ MOTOROLA ]
