CY7C024-55AC Cypress Semiconductor Corp, CY7C024-55AC Datasheet - Page 6

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CY7C024-55AC

Manufacturer Part Number
CY7C024-55AC
Description
IC,SRAM,4KX16,CMOS,QFP,100PIN,PLASTIC
Manufacturer
Cypress Semiconductor Corp
Datasheet

Specifications of CY7C024-55AC

Format - Memory
RAM
Memory Type
SRAM - Dual Port, Asynchronous
Memory Size
64K (4K x 16)
Speed
55ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
100-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Table 3. Semaphore Operation Example
Notes
Document #: 38-06035 Rev. *D
No action
Left port writes 0 to semaphore
Right port writes 0 to semaphore
Left port writes 1 to semaphore
Left port writes 0 to semaphore
Right port writes 1 to semaphore
Left port writes 1 to semaphore
Right port writes 0 to semaphore
Right port writes 1 to semaphore
Left port writes 0 to semaphore
Left port writes 1 to semaphore
7. A
8. If BUSY
9. If BUSY
0L–12L
and A
R
L
=L, then no change.
=L, then no change.
Function
0R–12R
, 1FFF/1FFE for the CY7C025.
I/O
0
–I/O
Left
1
0
0
1
1
0
1
1
1
0
1
15/17
I/O
0
Right
–I/O
1
1
1
0
0
1
1
0
1
1
1
15/17
Semaphore-free
Left Port has semaphore token
No change. Right side has no write access to semaphore.
Right port obtains semaphore token
No change. Left port has no write access to semaphore
Left port obtains semaphore token
Semaphore-free
Right port has semaphore token
Semaphore-free
Left port has semaphore token
Semaphore-free
Status
CY7C024/024A/0241
CY7C025/0251
Page 6 of 21
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