Cypress Semiconductor CY7C0251AV Ficha de especificações
Procurar online ou descarregar pdf Ficha de especificações para Hardware informático Cypress Semiconductor CY7C0251AV. Cypress Semiconductor CY7C0251AV 20 páginas. 3.3v 4k/8k/16k x 16/18 dual-port static ram
Imprimir páginaFeatures
■
True dual-ported memory cells which enable simultaneous
access of the same memory location
■
4, 8 or 16K × 16 organization
[1]
■
(CY7C024AV/024BV
/ 025AV/026AV)
■
4 or 8K × 18 organization (CY7C0241AV/0251AV)
■
16K × 18 organization (CY7C036AV)
■
0.35 micron CMOS for optimum speed and power
■
High speed access: 20 and 25 ns
■
Low operating power
❐
Active: I
= 115 mA (typical)
CC
= 10 μA (typical)
❐
Standby: I
SB3
Logic Block Diagram
R/W
L
UB
L
CE
L
LB
L
OE
L
[2]
IO
–IO
8/9L
15/17L
[3]
IO
–IO
0L
7/8L
12/13/14
[4]
A
–A
0L
11/1213L
[4]
A
–A
0L
11/12/13L
CE
L
OE
L
R/W
L
SEM
L
[5]
BUSY
L
INT
L
UB
L
LB
L
Notes
1. CY7C024AV and CY7C024BV are functionally identical.
2. IO
–IO
for x16 devices; IO
–IO
8
15
9
3. IO
–IO
for x16 devices; IO
–IO
0
7
0
8
4. A
–A
for 4K devices; A
–A
for 8K devices; A
0
11
0
12
5. BUSY is an output in master mode and an input in slave mode.
Cypress Semiconductor Corporation
Document #: 38-06052 Rev. *J
8/9
8/9
IO
Control
Address
True Dual-Ported
Decode
12/13/14
for x18 devices.
17
for x18 devices.
–A
for 16K devices.
0
13
•
198 Champion Court
CY7C024AV/024BV/025AV/026AV
CY7C0241AV/0251AV/036AV
3.3V 4K/8K/16K x 16/18 Dual-Port
■
Fully asynchronous operation
■
Automatic power down
■
Expandable data bus to 32 bits, 36 bits or more using Master
and Slave chip select when using more than one device
■
On chip arbitration logic
■
Semaphores included to permit software handshaking
between ports
■
INT flag for port-to-port communication
■
Separate upper byte and lower byte control
■
Pin select for Master or Slave (M/S)
■
Commercial and industrial temperature ranges
■
Available in 100-pin Pb-free TQFP and 100-pin TQFP
IO
Control
Address
RAM Array
Decode
12/13/14
Interrupt
Semaphore
Arbitration
M/S
•
San Jose
Static RAM
R/W
R
UB
R
CE
R
LB
R
OE
[2]
8/9
IO
–IO
8/9L
15/17R
[3]
8/9
IO
–IO
0L
7/8R
12/13/14
[4]
A
–A
0R
11/12/13R
[4]
A
–A
0R
11/12/13R
CE
R
OE
R
R/W
R
SEM
R
[5]
BUSY
R
INT
R
UB
R
LB
R
,
CA 95134-1709
•
408-943-2600
Revised December 10, 2008
R
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