2 / 39 page
CY7C43644
CY7C43664
CY7C43684
Document #: 38-06022 Rev. *B
Page 2 of 39
Selection Guide
CY7C43644/64/84
–7
CY7C43644/64/84
–10
CY7C43644/64/84
–15
Unit
Maximum Frequency
133
100
66.7
MHz
Maximum Access Time
6
8
10
ns
Minimum Cycle Time
7.5
10
15
ns
Minimum Data or Enable Set-up
3
4
5
ns
Minimum Data or Enable Hold
0
0
0
ns
Maximum Flag Delay
6
8
8
ns
Active Power Supply
Current (ICC1)
Commercial
100
100
100
mA
Industrial
100
CY7C43644
CY7C43664
CY7C43684
Density
1K x 36 x2
4K x 36 x2
16K x 36 x2
Package
128 TQFP
128 TQFP
128 TQFP
CY7C43644
CY7C43664
CY7C43684
TQFP
Top View
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
B30
B26
B27
B28
B29
B31
GND
GND
B32
B33
B34
B35
VCC
PRS2
CLKB
GND
SIZE
B16
B17
B18
B19
B20
B21
B22
B23
GND
BM
B24
B25
RT1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
VCC
A29
GND
A30
A31
A32
A34
A35
GND
CLKA
ENA
W/RA
A12
A20
GND
A18
A19
A21
VCC
A22
GND
BE/FWFT
A23
A24
A25
A26
A27
A28
A33
72
71
70
69
68
67
66
65
B12
B10
B11
GND
B13
B14
B15
VCC
30
31
32
33
34
35
36
37
38
RT2
A10
A11
GND
A13
A14
A15
A16
A17
Pin Configuration