CY7C199D-10VXIT Cypress Semiconductor Corp, CY7C199D-10VXIT Datasheet - Page 8

• Manufacturer Part Number: CY7C199D-10VXIT
• Description: CY7C199D-10VXIT
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C199D-10VXIT

• Format - Memory: RAM
• Memory Type: SRAM - Asynchronous
• Memory Size: 256K (32K x 8)
• Speed: 10ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOJ
• Rohs Compliant: YES
• Density: 256Kb
• Access Time (max): 10ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 5V
• Address Bus: 15b
• Package Type: SOJ
• Operating Temp Range: -40C to 85C
• Number Of Ports: 1
• Supply Current: 80mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 28
• Word Size: 8b
• Number Of Words: 32K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Notes
Switching Waveforms
Document Number: 38-05471 Rev. *H
16. The internal write time of the memory is defined by the overlap of CE LOW and WE LOW. Both signals must be LOW to initiate a write and either signal can terminate a
17. The minimum write cycle time for Write Cycle No. 3 (WE controlled, OE LOW) is the sum of t
18. Data I/O is high impedance if OE = V
19. If CE goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
20. During this period the I/Os are in the output state and input signals should not be applied.
ADDRESS
ADDRESS
DATA I/O
DATA IO
write by going HIGH. The data input setup and hold timing should be referenced to the rising edge of the signal that terminates the write.
WE
WE
CE
CE
NOTE
t
SA
20
IH
Figure 6. Write Cycle No. 3 WE Controlled, OE LOW
(continued)
.
t
Figure 5. Write Cycle No. 1: CE Controlled
HZWE
t
SA
t
t
AW
AW
t
t
WC
WC
DATA
DATA
t
SCE
HZWE
t
t
SD
SD
IN
IN
and t
VALID
VALID
SD
.
[16, 18, 19]
[17, 19]
t
HD
t
t
HA
LZWE
t
HA
t
HD
CY7C199D
Page 8 of 15
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