CY7C1381DV25, CY7C1381FV25
CY7C1383DV25, CY7C1383FV25
18-Mbit (512K x 36/1M x 18) Flow-Through SRAM
Features
•Supports 133 MHz bus operations
•512K x 36/1M x 18 common IO
•2.5V core power supply (VDD)
•2.5V IO supply (VDDQ)
•Fast
•Provides
•User selectable burst counter supporting Intel→ Pentium→ interleaved or linear burst sequences
•Separate processor and controller address strobes
•Synchronous self timed write
•Asynchronous output enable
•CY7C1381DV25/CY7C1383DV25 available in
•IEEE 1149.1
•ZZ sleep mode option
Selection Guide
Functional Description [1]
The CY7C1381DV25/CY7C1383DV25/CY7C1381FV25/ CY7C1383FV25 is a 2.5V, 512K x 36 and 1M x 18 synchronous flow through SRAMs, designed to interface with
write (GW). Asynchronous inputs include the output enable (OE) and the ZZ pin.
The CY7C1381DV25/CY7C1383DV25/CY7C1381FV25/ CY7C1383FV25 allows interleaved or linear burst sequences, selected by the MODE input pin. A HIGH selects an interleaved burst sequence, while a LOW selects a linear burst sequence. Burst accesses can be initiated with the processor address strobe (ADSP) or the cache controller address strobe (ADSC) inputs. Address advancement is controlled by the address advancement (ADV) input.
Addresses and chip enables are registered at rising edge of clock when either address strobe processor (ADSP) or address strobe controller (ADSC) are active. Subsequent burst addresses can be internally generated as controlled by the advance pin (ADV).
The CY7C1381DV25/CY7C1383DV25/CY7C1381FV25/ CY7C1383FV25 operates from a +2.5V core power supply while all outputs also operate with a +2.5 supply. All inputs and outputs are
| 133 MHz | 100 MHz | Unit |
Maximum Access Time | 6.5 | 8.5 | ns |
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Maximum Operating Current | 210 | 175 | mA |
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Maximum CMOS Standby Current | 70 | 70 | mA |
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Notes
1.For best practices or recommendations, please refer to the Cypress application note AN1064, SRAM System Design Guidelines on www.cypress.com.
2.CE3, CE2 are for TQFP and 165 FBGA package only. 119 BGA is offered only in 1 chip enable.
Cypress Semiconductor Corporation | • | 198 Champion Court • San Jose, CA | • | |
Document #: |
| Revised Feburary 14, 2007 |
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