CY7C277 View Datasheet(PDF) - Cypress Semiconductor
Part Name
Description
Manufacturer
CY7C277 Datasheet PDF : 13 Pages
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77
CY7C277
32K x 8 Reprogrammable Registered PROM
Features
• Windowed for reprogrammability
• CMOS for optimum speed/power
• High speed
— 30-ns address set-up
— 15-ns clock to output
• Low power
— 60 mW (commercial)
— 715 mW (military)
• Programmable address latch enable input
• Programmable synchronous or asynchronous output
enable
• On-chip edge-triggered output registers
• EPROM technology, 100% programmable
• Slim 300-mil, 28-pin plastic or hermetic DIP
• 5V ±10% VCC, commercial and military
• TTL-compatible I/O
• Direct replacement for bipolar PROMs
• Capable of withstanding greater than 2001V static dis-
charge
Logic Block Diagram
A14
O7
A13
X
A12
A11
ADDRESS
ROW
DECODER
256 x 1024
PROGRAMMABLE
8-BIT
1 OF 128
O6
A10
1 OF 256
ARRAY
MUX
A9
O5
A8
15-BIT
A7
ADDRESS
A6
TRANSPARENT/
LATCH
A5
8-BIT
O4
EDGE-
TRIGGERED
REGISTER
O3
A4
O2
A3
Y
A2
ADDRESS
O1
A1
A0
ALE
COLUMN
DECODER
1 OF 32
O0
CP
PROGRAMMABLE
CP/ALE OPTIONS
ALE
E/E S
CP
PROGRAMMABLE
D
Q
MULTIPLEXER
C
Pin Configurations
DIP/Flatpack
Top View
A9 1
A8 2
A7 3
A6 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
O0 11
O1 12
O2 13
GND 14
28 VCC
27 A10
26 A11
25 A12
24 A13
23 A14
22 ALE
21 CP
20 E/ES
19 O7
18 O6
17 O5
16 O4
15 O3
LCC/PLCC (Opaque Only)
Top View
4 3 2 1 32 31 30
A6
A5
A4
A3
A2
A1
A0
5
6
7
8
9
10
11
29 A12
28 A13
27 A14
26 NC
25 ALE
24 CP
23 E/ES
NC 12
22 O7
O0 13
21 O6
14151617 181920
Selection Guide
Minimum Address Set-Up Time (ns)
Maximum Clock to Output (ns)
Maximum Operating
Current (mA)
Com’l
Mil
7C277-30
30
15
120
7C277-40
40
20
120
130
7C277-50
50
25
120
130
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
Document #: 38-04006 Rev. **
Revised March 4, 2002
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