CY7C024V Datasheet, PDF (1/19 Pages) Cypress Semiconductor – 3.3V 4K/8K/16K x 16/18 Dual-Port Static RAM

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CY7C024V/025V/026V
PRELIMINARY CY7C0241V/0251V/036V
3.3V 4K/8K/16K x 16/18 Dual-Port Static RAM
Features
• True dual-ported memory cells which allow simulta-
neous access of the same memory location
• 4/8/16K x 16 organization (CY7C024V/025V/026V)
• 4/8K x 18 organization (CY7C0241V/0251V)
• 16K x 18 organization (CY7C036V)
• 0.35-micron CMOS for optimum speed/power
• High-speed access: 15^[1]/20/25 ns
• Low operating power
— Active: I_CC = 115 mA (typical)
— Standby: I_SB3 = 10 µA (typical)
• Fully asynchronous operation
• Automatic power-down
• Expandable data bus to 32/36 bits or more using Mas-
ter/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
• Commercial and industrial temperature ranges
• Available in 100-pin TQFP
• Pin-compatible and functionally equivalent to
IDT70V24, 70V25, and 7V0261.
Logic Block Diagram
R/W_L
UB_L
R/W_R
UB_R
CE_L
LB_L
OE_L
[2]
8/9
I/O_8/9L–I/O_15/17L
[3]
8/9
I/O_0L–I/O_7/8L
I/O
Control
I/O
Control
CE_R
LB_R
OE_R
8/9
[2]
I/O_8/9L–I/O_15/17R
8/9
[3]
I/O_0L–I/O_7/8R
[4]
A_0L–A_11/1213L
12/13/14 _Address
Decode
True Dual-Ported
RAM Array
Address ^12/13/14
Decode
[4]
A_0R–A_11/12/13R
[4]
A_0L–A_11/12/13L
12/13/14
CE_L
Interrupt
OE_L
Semaphore
R/W_L
SEM_L
[5]
BUSY_L
INT_L
UB_L
LB_L
Arbitration
M/S
Notes:
1. Call for availability.
2. I/O₈–I/O₁₅ for x16 devices; I/O₉–I/O₁₇ for x18 devices.
3. I/O₀–I/O₇ for x16 devices; I/O₀–I/O₈ for x18 devices.
4. A₀–A₁₁ for 4K devices; A₀–A₁₂ for 8K devices; A₀–A₁₃ for 16K devices.
5. BUSY is an output in master mode and an input in slave mode.
12/13/14
[4]
A_0R–A_11/12/13R
CE_R
OE_R
R/W_R
SEM_R
[5]
BUSY_R
INT_R
UB_R
LB_R
For the most recent information, visit the Cypress web site at www.cypress.com
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134
• 408-943-2600
October 18, 1999