CY7C421-25DMB QP SEMICONDUCTOR, CY7C421-25DMB Datasheet - Page 2

• Manufacturer Part Number: CY7C421-25DMB
• Manufacturer: QP SEMICONDUCTOR

Specifications of CY7C421-25DMB

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Maximum Rating
(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
Note:
Document #: 38-06001 Rev. *A
Selection Guide
1.
Logic Block Diagram
256 x 9
512 x 9 (600-mil only)
512 x 9
1K x 9 (600-mil only)
1K x 9
2K x 9 (600-mil only)
2K x 9
4K x 9 (600-mil only)
4K x 9
Frequency (MHz)
Maximum Access Time (ns)
I
CC1
Single Power Supply: The voltage on any input or I/O pin can not exceed the power pin during power-up.
(mA)
W
XI
R
CONTROL
CONTROL
WRITE
READ
[1]
EXPANSION
LOGIC
LOGIC
FLAG
POINTER
WRITE
BUFFERS
THREE-
STATE
7C419–10
7C421–10
7C425–10
7C429–10
7C433–10
DATA OUTPUTS
DATA INPUTS
RAM ARRAY
50
10
35
(Q 0 –Q 8 )
1024x 9
2048x 9
4096x 9
(D 0 –D 8 )
256 x 9
512 x 9
EF
FF
XO/HF
7C419–15
7C421–15
7C425–15
7C429–15
7C433–15
40
15
35
POINTER
READ
RESET
LOGIC
7C420–20
7C421–20
7C424–20
7C425–20
7C428–20
7C429–20
7C433–20
C420–1
33.3
20
35
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
Pin Configurations
MR
FL/RT
NC
Q
Q
Q
D
D
D
FF
XI
7C420–25
7C421–25
7C424–25
7C425–25
7C429–25
7C432–25
7C433–25
2
0
0
1
2
1
NC
NC
D
D
FF
Q
Q
5
6
7
8
9
10
11
12
13
XI
14 15 1617 181920
4 3 2 1 323130
1
0
0
28.5
1
25
35
PLCC/LCC
Top View
7C421/5/9
7C419
7C433
1
2
3
4
5
6
7
8
32 3130 29 28 27
9 10 11 12 13 14 15
7C419–30
7C421–30
7C424–30
7C425–30
7C429–30
7C433–30
29
28
27
26
25
24
23
22
21
CY7C419/21/25/29/33
25
30
35
7C421/5/9
C420–2
Top View
FL/RT
XO/HF
D
D
NC
MR
EF
Q
Q
7C419
7C433
TQFP
6
7
7
6
26
7C419–40
7C420–40
7C421–40
7C424–40
7C425–40
7C429–40
7C432–40
7C433–40
GND
25
16
Q
Q
Q
Q
Q
D
D
D
D
D
FF
W
XI
24
23
22
21
20
19
18
17
20
40
35
8
3
2
1
0
0
1
2
3
8
Top View
1
2
3
4
5
6
7
8
9
10
11
12
13
14
7C420/1
7C424/5
7C428/9
7C432/3
7C419
DIP
C420–4
Page 2 of 22
D
FL/RT
NC
NC
MR
EF
XO/HF
Q
7C420–65
7C421–65
7C424–65
7C425–65
7C428–65
7C429–65
7C433–65
7
7
28
27
26
25
24
23
22
21
20
19
18
17
16
15
C420–3
12.5
65
35
V cc
D
D
D
D
FL/RT
MR
EF
XO/HF
Q
Q
Q
Q
R
4
5
6
7
7
6
5
4