CY7C1380DV25, CY7C1380FV25
CY7C1382DV25, CY7C1382FV25
18-Mbit (512K x 36/1M x 18) Pipelined SRAM
Features
• Supports bus operation up to 250 MHz
• Available speed grades are 250, 200, and 167 MHz
• Registered inputs and outputs for pipelined operation
• 2.5V core power supply
• Fast clock-to-output times, 2.6 ns (for 250-MHz device)
• Provides high-performance 3-1-1-1 access rate
• User selectable burst counter supporting Intel
®
Pentium
®
interleaved or linear burst sequences
• Separate processor and controller address strobes
• Synchronous self timed writes
• Asynchronous output enable
• Single Cycle Chip Deselect
• CY7C1380DV25/CY7C1382DV25 available in
JEDEC-standard Pb-free 100-pin TQFP, Pb-free and non
Pb-free 165-ball FBGA package.
CY7C1380FV25/CY7C1382FV25 available in Pb-free and
non Pb-free 119-ball BGA package
• IEEE 1149.1 JTAG-Compatible Boundary Scan
• ZZ sleep mode option
Functional Description
[1]
The
CY7C1380DV25/CY7C1382DV25/CY7C1380FV25/
CY7C1382FV25 SRAM integrates 512K x 36 and 1M x 18
SRAM cells with advanced synchronous peripheral circuitry
and a two-bit counter for internal burst operation. All
synchronous inputs are gated by registers controlled by a
positive edge triggered clock input (CLK). The synchronous
inputs include all addresses, all data inputs, address-pipelining
chip enable (CE
1
), depth expansion chip enables (CE
2
and
CE
3 [2]
), burst control inputs (ADSC, ADSP, and ADV), write
enables (BW
X
, and BWE), and global write (GW).
Asynchronous inputs include the output enable (OE) and the
ZZ pin.
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).
Address, data inputs, and write controls are registered on-chip
to initiate a self timed write cycle.This part supports byte write
operations (see
Pin Definitions on page 6
and
Truth Table
[4,
5, 6, 7, 8]
on page 9
for further details). Write cycles can be one
to two or four bytes wide as controlled by the byte write control
inputs. GW when active LOW causes all bytes to be written.
The
CY7C1380DV25/CY7C1382DV25/CY7C1380FV25/
CY7C1382FV25 operates from a +2.5V core power supply
while all outputs may operate with a +2.5 supply. All inputs and
outputs are JEDEC-standard and JESD8-5-compatible.
Selection Guide
250 MHz
Maximum Access Time
Maximum Operating Current
Maximum CMOS Standby Current
2.6
350
70
200 MHz
3.0
300
70
167 MHz
3.4
275
70
Unit
ns
mA
mA
Notes:
1. For best practices or recommendations, please refer to the Cypress application note AN1064,
SRAM System Design Guidelines
on
www.cypress.com.
2. CE
3
, CE
2
are for TQFP and 165 FBGA packages only. 119 BGA is offered only in 1 chip enable
Cypress Semiconductor Corporation
Document #: 38-05546 Rev. *E
•
198 Champion Court
•
San Jose
,
CA 95134-1709
•
408-943-2600
Revised Feburary 15, 2007
[+] Feedback
DSP 与 ARM 处理器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
