CY7C027V_13 Datasheet, PDF (1/24 Pages) Cypress Semiconductor – 3.3 V 32 K / 64 K × 16 / 18 Dual-Port Static RAM

CY7C027V/027AV/028V
CY7C037AV/038V
3.3 V 32 K / 64 K × 16 / 18 Dual-Port
Static RAM
3.3 V 32 K / 64 K × 16 / 18 Dual-Port Static RAM
Features
■ True dual-ported memory cells which allow simultaneous
access of the same memory location
■ 32K x 16 organization (CY7C027V/027AV ^[1])
■ 64K x 16 organization (CY7C028V)
■ 32K x 18 organization (CY7C037AV)
■ 64K x 18 organization (CY7C038V)
■ 0.35 micron Complementary metal oxide semiconductor
(CMOS) for optimum speed and power
■ High speed access: 15, 20, and 25 ns
■ Low operating power
■ Active: I_CC = 115 mA (typical)
■ Standby: I_SB3 = 10 A (typical)
Logic Block Diagram
R/W_L
UB_L
CE_0L
CE_1L
LB_L
OE_L
CE_L
I/O_8/9L–I/O^[₁²₅^] _/17L
8/9
I/O_0L–I/O^[₇³_/^]_8L
8/9
I/O
Control
■ Fully asynchronous operation
■ Automatic power-down
■ Expandable data bus to 32/36 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
■ Separate upper-byte and lower-byte control
■ Dual chip enables
■ Pin select for Master or Slave
■ Commercial and Industrial temperature ranges
■ 100-pin Pb-free Thin quad plastic flatpack (TQFP) and 100-pin
TQFP
I/O
Control
R/W_R
UB_R
CE_R
CE_0R
CE_1R
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
A_0L–A^[₁⁴₄^] _/15L
15/16
Address
Decode
True Dual-Ported
RAM Array
Address
Decode
15/16
A_0R–^[4A^]_14/15R
A_0L–A^[₁⁴₄^] _/15L
CE_L
OE_L
R/W_L
SEM_{L [5]}
BUSY_L
INT_L
UB_L
LB_L
15/16
Notes
1. CY7C027V, and CY7C027AV are functionally identical.
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–A₁₄ for 32K; A₀–A₁₅ for 64K devices.
5. BUSY is an output in master mode and an input in slave mode.
Interrupt
Semaphore
Arbitration
M/S
15/16
A_0R–^[4A^]_14/15R
CE_R
OE_R
R/W_R
[5] ^SEMR
BUSY_R
INT_R
UB_R
LB_R
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 38-06078 Rev. *G
• San Jose, CA 95134-1709 • 408-943-2600
Revised February 5, 2013