1.8V 4k/8k/16k x 16 and 8k/16k x 8 ConsuMoBL Dual-Port Static RAM
CYDC256B16, CYDC128B16,
CYDC064B16, CYDC128B08,
CYDC064B08
CypressSemiconductor Corporation • 198 Champion Court • San Jose,CA 95134-1709 • 408-943-2600
Document #: 001-01638 Rev. *E Revised January 25, 2007
Features
• True dual-ported memory cells which allow simulta-
neous access of the same memory location
• 4/8/16k × 16 and 8/16k × 8 organization
• High-speed access: 40 ns
• Ultra Low operating power
— Active: ICC = 15 mA (typical) at 55 ns
— Active: ICC = 25 mA (typical) at 40 ns
— Standby: ISB3 = 2 µA (typical)
• Port-independent 1.8V, 2.5V, and 3.0V I/Os
• Lead (Pb)-free 14 x 14 x 1.4 mm 100-pin TQFP Package
• Full asynchronous operation
• Pin select for Master or Slave
• Expandable data bus to 32 bits with Master/Slave chip
select when using more than one device
• On-chip arbitration logic
• On-chip semaphore logic
• Input Read Registers and Output Drive Registers
•INT
flag for port-to-port communication
• Separate upper-byte and lower-byte control
• Commercial and industrial temperature ranges
Selection Guide for VCC = 1.8V
CYDC256B16, CYDC128B16,
CYDC064B16, CYDC128B08,
CYDC064B08
-40
CYDC256B16, CYDC128B16,
CYDC064B16, CYDC128B08,
CYDC064B08
-55
UnitPort I/O Voltages (P1-P2) 1.8V-1.8V 1.8V-1.8V
Maximum Access Time 40 55 ns
Typical Operating Current 25 15 mA
Typical Standby Current for ISB1 22µA
Typical Standby Current for ISB3 22µA
Selection Guide for VCC = 2.5V
CYDC256B16, CYDC128B16,
CYDC064B16, CYDC128B08,
CYDC064B08
-40
CYDC256B16, CYDC128B16,
CYDC064B16, CYDC128B08,
CYDC064B08
-55
UnitPort I/O Voltages (P1-P2) 2.5V-2.5V 2.5V-2.5V
Maximum Access Time 40 55 ns
Typical Operating Current 39 28 mA
Typical Standby Current for ISB1 66µA
Typical Standby Current for ISB3 44µA
Selection Guide for VCC = 3.0V
CYDC256B16, CYDC128B16,
CYDC064B16, CYDC128B08,
CYDC064B08
-40
CYDC256B16, CYDC128B16,
CYDC064B16, CYDC128B08,
CYDC064B08
-55
UnitPort I/O Voltages (P1-P2) 3.0V-3.0V 3.0V-3.0V
Maximum Access Time 40 55 ns
Typical Operating Current 49 42 mA
Typical Standby Current for ISB1 77µA
Typical Standby Current for ISB3 66µA
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