CY7C028V-25AC Cypress Semiconductor Corp, CY7C028V-25AC Datasheet - Page 7

• Manufacturer Part Number: CY7C028V-25AC
• Description: IC SRAM 1MB DUAL 100-TQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C028V-25AC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 1M (64K x 16)
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Switching Characteristics
Data Retention Mode
The CY7C027V/028V and CY7037V/038V are designed with
battery backup in mind. Data retention voltage and supply cur-
rent are guaranteed over temperature. The following rules en-
sure data retention:
1. Chip enable (CE) must be held HIGH during data retention, with-
2. CE must be kept between V
3. The RAM can begin operation >t
t
t
t
t
t
t
INS
INR
SOP
SWRD
SPS
SAA
INTERRUPT TIMING
SEMAPHORE TIMING
in V
during the power-up and power-down transitions.
minimum operating voltage (3.0 volts).
Parameter
CC
to V
CC
– 0.2V.
INT Set Time
INT Reset Time
SEM Flag Update Pulse (OE or SEM)
SEM Flag Write to Read Time
SEM Flag Contention Window
SEM Address Access Time
[17]
CC
Description
– 0.2V and 70% of V
Over the Operating Range
RC
after V
CC
reaches the
CC
[11]
(continued)
7
Min.
10
5
5
Timing
V
CE
ICC
Note:
19. CE = V
CC
-15
Parameter
DR1
tested.
Max.
15
15
15
CC
, V
in
CY7C027V/028V
CY7C037V/038V
= GND to V
Min.
10
5
5
3.0V
@ VCC
Data Retention Mode
Test Conditions
V
-20
CC
CC
V
Max.
, T
to V
CC
20
20
20
A
DR
= 25 C. This parameter is guaranteed but not
CC
2.0V
= 2V
– 0.2V
CY7C027V/028V
CY7C037V/038V
Min.
12
5
5
[19]
3.0V
-25
Max.
20
20
25
Max.
50
V
t
IH
RC
Unit
Unit
ns
ns
ns
ns
ns
ns
A