CY7C138AV Datasheet, PDF (1/20 Pages) Cypress Semiconductor – 3.3V 4K/8K/16K/32K x 8/9 Dual-Port Static RAM

CY7C138AV CY7C139AV CY7C144AV CY7C145AV CY7C006AV CY7C016AV CY7C007AV CY7C017AV 3.3V 4K/8K/16K/32K x 8/9
Dual-Port Static RAM
Features
• True Dual-Ported memory cells which allow
simultaneous access of the same memory location
• 4K/8K/16K/32K x 8 organizations
(CY7C0138AV/144AV/006AV/007AV)
• 4K/8K/16K/32K x 9 organizations
(CY7C0139AV/145AV/016AV/017AV)
• 0.35-micron CMOS for optimum speed/power
• High-speed access: 20/25 ns
• Low operating power
— Active: I_CC = 115 mA (typical)
— Standby: I_SB3 = 10 µA (typical)
• Fully asynchronous operation
Logic Block Diagram
R/W_L
CE_L
OE_L
[1]
8/9
I/O_0L–I/O_7/8L
I/O
Control
CY7C138AV/144AV/006AV
CY7C139AV/145AV/016AV
CY7C007AV/017AV
3.3V 4K/8K/16K/32K x 8/9
Dual-Port Static RAM
• Automatic power-down
• Expandable data bus to 16/18 bits or more using Master/
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
• Pin select for Master or Slave
• Commercial and Industrial Temperature Ranges
• Available in 68-pin PLCC (all) and 64-pin TQFP
(7C006AV & 7C144AV)
• Pb-Free packages available
I/O
Control
R/W_R
CE_R
OE_R
8/9
[1]
I/O_0R–I/O_7/8R
[2]
A_0L–A_11–14L
12–15
Address
Decode
True Dual-Ported
RAM Array
Address
Decode
12–15
[2]
A_0R–A_11–14R
A_0L–A^{[121]–14L}
CE_L
OE_L
R/W_L
SEM_L
BUSY_L ^[3]
INT_L
12–15
Interrupt
Semaphore
Arbitration
M/S
For the most recent information, visit the Cypress web site at www.cypress.com
Notes:
1. I/O₀–I/O₇ for x8 devices; I/O₀–I/O₈ for x9 devices.
2. A₀–A₁₁ for 4K devices; A₀–A₁₂ for 8K devices; A₀–A₁₃ for 16K devices; A₀–A₁₄ for 32K devices;
3. BUSY is an output in master mode and an input in slave mode.
12–15
[2]
A_0R–A_11–14R
CE_R
OE_R
R/W_R
SEM_R
[3]_BUSYR
INT_R
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
Document #: 38-06051 Rev. *C
Revised June 6, 2005