CY7C024-25JI CYPRESS [Cypress Semiconductor], CY7C024-25JI Datasheet - Page 17

• Manufacturer Part Number: CY7C024-25JI
• Description: 4K x 16/18 and 8K x 16/18 Dual-Port Static RAM with SEM, INT, BUSY
• Manufacturer: CYPRESS [Cypress Semiconductor]

Table 3. Semaphore Operation Example
Ordering Information
4K x16 Dual-Port SRAM
Document #: 38-06035 Rev. *B
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
Notes:
41. A
42. If BUSY
43. If BUSY
Speed
(ns)
15
25
35
55
0L–12L
and A
R
L
=L, then no change.
=L, then no change.
Function
CY7C024–15AC
CY7C024–15JC
CY7C024–25AC
CY7C024–25JC
CY7C024–25AI
CY7C024–25JI
CY7C024–35AC
CY7C024–35JC
CY7C024–35AI
CY7C024–35JI
CY7C024–55AC
CY7C024–55JC
CY7C024–55AI
CY7C024–55JI
0R–12R
, 1FFF/1FFE for the CY7C025.
Ordering Code
I/O
0
–I/O
Left
1
0
0
1
1
0
1
1
1
0
1
15/17
Package
Name
A100
A100
A100
A100
A100
A100
A100
J83
J83
J83
J83
J83
J83
J83
I/O
0
Right
–I/O
1
1
1
0
0
1
1
0
1
1
1
100-Pin Thin Quad Flat Pack
84-Lead Plastic Leaded Chip Carrier
100-Pin Thin Quad Flat Pack
84-Lead Plastic Leaded Chip Carrier
100-Pin Thin Quad Flat Pack
84-Lead Plastic Leaded Chip Carrier
100-Pin Thin Quad Flat Pack
84-Lead Plastic Leaded Chip Carrier
100-Pin Thin Quad Flat Pack
84-Lead Plastic Leaded Chip Carrier
100-Pin Thin Quad Flat Pack
84-Lead Plastic Leaded Chip Carrier
100-Pin Thin Quad Flat Pack
84-Lead Plastic Leaded Chip Carrier
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
Package Type
Status
CY7C024/0241
CY7C025/0251
Commercial
Commercial
Industrial
Commercial
Industrial
Commercial
Industrial
Operating
Page 17 of 20
Range