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CY7C419/21/25/29/33
Document #: 38-06001 Rev. *B
Page 2 of 25
Maximum Rating[1]
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature .................................–65
°C to +150°C
Ambient Temperature with
Power Applied.............................................–55
°C to +125°C
Supply Voltage to Ground Potential ............... –0.5V to +7.0V
DC Voltage Applied to Outputs
in High Z State ................................................–0.5V to +7.0V
DC Input Voltage ............................................–0.5V to +7.0V
Power Dissipation.......................................................... 1.0W
Output Current, into Outputs (LOW)............................ 20 mA
Static Discharge Voltage............................................ >2000V
(per MIL–STD–883, Method 3015)
Latch-Up Current ..................................................... >200 mA
Note:
1. Single Power Supply: The voltage on any input or I/O pin can not exceed the power pin during power-up.
RAM ARRAY
256 x 9
512 x 9
1024x 9
2048x 9
4096x 9
Logic Block Diagram
Pin Configurations
1
2
3
4
5
6
7
8
9
10
11
12
15
16
17
18
19
20
24
23
22
21
13
14
25
28
27
26
Top View
DIP
7C420/1
W
D8
D3
D2
D1
D0
XI
FF
Q0
Q1
Q2
GND
Vcc
D4
FL/RT
MR
EF
XO/HF
Q7
R
PLCC/LCC
Top View
Q3
Q8
D5
D6
D7
Q6
Q5
Q4
43 2 1 323130
14 15 1617 181920
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
FL/RT
MR
EF
XO/HF
Q7
D6
Q6
D7
NC
READ
CONTROL
WRITE
CONTROL
WRITE
POINTER
RESET
LOGIC
EXPANSION
LOGIC
DATA INPUTS
(D0–D 8)
THREE-
STATE
BUFFERS
DATA OUTPUTS
(Q0–Q 8)
W
READ
POINTER
FLAG
LOGIC
R
XI
EF
FF
XO/HF
MR
FL/RT
D2
D1
D0
XI
FF
Q0
Q1
NC
Q2
7C419
7C421/5/9
7C433
7C424/5
7C428/9
7C432/3
7C419
26
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
9 1011 121314 15
32 3130 29 28 27
25
Q1
XI
Q0
D1
D0
NC
NC
FF
D7
FL/RT
NC
NC
MR
EF
XO/HF
Q7
Top View
TQFP
16
7C419
7C421/5/9
7C433
Selection Guide
256 x 9
7C419–10
7C419–15
7C419–30
7C419–40
512 x 9 (600-mil only)
7C420–20
7C420–25
7C420–40
7C420–65
512 x 9
7C421–10
7C421–15
7C421–20
7C421–25
7C421–30
7C421–40
7C421–65
1K x 9 (600-mil only)
7C424–20
7C424–25
7C424–30
7C424–40
7C424–65
1K x 9
7C425–10
7C425–15
7C425–20
7C425–25
7C425–30
7C425–40
7C425–65
2K x 9 (600-mil only)
7C428–20
7C428–65
2K x 9
7C429–10
7C429–15
7C429–20
7C429–25
7C429–30
7C429–40
7C429–65
4K x 9 (600-mil only)
7C432–25
7C432–40
4K x 9
7C433–10
7C433–15
7C433–20
7C433–25
7C433–30
7C433–40
7C433–65
Frequency (MHz)
50
40
33.3
28.5
25
20
12.5
Maximum Access Time (ns)
10
15
20
25
30
40
65
ICC1 (mA)
35
35
35
35
35
35
35
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