CY7C4801-25AC Cypress Semiconductor Corp, CY7C4801-25AC Datasheet - Page 7

• Manufacturer Part Number: CY7C4801-25AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4801-25AC

• Density: 4Kb
• Word Size: 9b
• Sync/async: Synchronous
• Expandable: Yes
• Package Type: TQFP
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / Rohs Status: Not Compliant

Switching Waveforms
Write Cycle Timing
Read Cycle Timing
RCLKA (RCLKB)
RENA1,RENA2
(RENB1,RENB2)
EFA(EFB)
QA
(QB
OEA(OEB)
WCLKA,WCLKB
WENA1(WENB1)
WENA2(WENB2)
WCLKA (WCLKB)
DA
(DB
WENA1
(WENB1)
WENA2(WENB2)
(if applicable)
FFA (FFB)
RCLKA (RCLKB)
RENA1,RENB2
(RENB1, RENB2)
Notes:
10. t
11. t
0
0
0
0
QA
cycle. If the time between the rising edge of (RCLKA,RCLKB) and the rising edge of (WCLKA,WCLKB) is less than t
next (WCLKA,WCLKB) rising edge.
cycle. It the time between the rising edge of (WCLKA,WCLKB) and the rising edge of RCLK is less than t
(RCLKA,RCLKB) rising edge.
DA
DB
QB
SKEW1
SKEW1
8
8
8
8
)
)
is the minimum time between a rising (RCLKA,RCLKB) edge and a rising (WCLKA,WCLKB) edge to guarantee that (FFA,FFB) will go HIGH during the current clock
is the minimum time between a rising (WCLKA,WCLKB) edge and a rising (RCLKA,RCLKB) edge to guarantee that (EFA,EFB) will go HIGH during the current clock
t
ENS
t
OLZ
t
SKEW1
t
ENH
t
t
CLKH
CLKH
[10]
t
t
t
A
REF
WFF
t
OE
t
t
CLK
CLK
t
SKEW1
NO OPERATION
[11]
t
t
DS
t
CLKL
CLKL
7
t
ENS
SKEW1
VALID DATA
t
DH
t
ENH
, then (EFA,EFB) may not change state until the next
t
REF
t
WFF
SKEW1
CY7C4831/4841/4851
CY7C4801/4811/4821
t
, then (FFA,FFB) may not change state until the
OHZ
NO OPERATION
NO OPERATION
48X1–7
48X1–6