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CY7C027V_09 Datasheet, PDF (1/18 Pages) Cypress Semiconductor – 3.3V 32K/64K x 16/18 Dual-Port Static RAM | |||
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CY7C027V/027VN/027AV/028V
CY7C037V/037AV/038V
3.3V 32K/64K x 16/18 Dual-Port Static
RAM
Features
â True Dual-Ported memory cells which allow
simultaneous access of the same memory location
â 32K x 16 organization (CY7C027V/027VN/027AV [1])
â 64K x 16 organization (CY7C028V)
â 32K x 18 organization (CY7C037V/037AV[2])
â 64K x 18 organization (CY7C038V)
â 0.35 micron CMOS for optimum speed and power
â High speed access: 15, 20, and 25 ns
â Low operating power
â Active: ICC = 115 mA (typical)
â Standby: ISB3 = 10 μA (typical)
Logic Block Diagram
R/WL
UBL
CE0L
CE1L
LBL
OEL
CEL
[3]
8/9
I/O8/9LâI/O15/17L
[4]
8/9
I/O0LâI/O7/8L
I/O
Control
â Fully asynchronous operation
â Automatic power down
â Expandable data bus to 32/36 bits or more using Master/Slave
chip select when using more than one device
â On-chip arbitration logic
â Semaphores included to permit software handshaking
between ports
â INT flag for port-to-port communication
â Separate upper-byte and lower-byte control
â Dual chip enables
â Pin select for Master or Slave
â Commercial and Industrial temperature ranges
â 100-pin Pb-free TQFP and 100-pin TQFP
I/O
Control
R/WR
UBR
CER
CE0R
CE1R
LBR
OER
8/9
[3]
I/O8/9LâI/O15/17R
8/9
[4]
I/O0LâI/O7/8R
[5]
A0LâA14/15L
15/16
Address
Decode
True Dual-Ported
RAM Array
[5]
A0LâA14/15L
CEL
OEL
R/WL
SEML [6]
BUSYL
INTL
UBL
LBL
15/16
Interrupt
Semaphore
Arbitration
M/S
Notes
1. CY7C027V, CY7C027VN and CY7C027AV are functionally identical.
2. CY7C037V and CY7C037AV are functionally identical.
3. I/O8âI/O15 for x16 devices; I/O9âI/O17 for x18 devices.
4. I/O0âI/O7 for x16 devices; I/O0âI/O8 for x18 devices.
5. A0âA14 for 32K; A0âA15 for 64K devices.
6. BUSY is an output in master mode and an input in slave mode.
Address
Decode
15/16
15/16
[5]
A0RâA14/15R
[5]
A0RâA14/15R
CER
OER
R/WR
[6] SEMR
BUSYR
INTR
UBR
LBR
Cypress Semiconductor Corporation ⢠198 Champion Court
Document #: 38-06078 Rev. *B
⢠San Jose, CA 95134-1709 ⢠408-943-2600
Revised December 09, 2008
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