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CG7480AT 반도체 회로 부품 판매점

8-Mbit (512 K x 16) Static RAM



Cypress 로고
Cypress
CG7480AT 데이터시트, 핀배열, 회로
CG7480AT
8-Mbit (512 K × 16) Static RAM
8-Mbit (512 K × 16) Static RAM
Features
Temperature ranges
–40 °C to 125 °C
High speed
tAA = 15 ns
Low active power
ICC = 120 mA at 67 MHz
Low CMOS standby power
ISB2 = 20 mA
2.0-V data retention
Automatic power-down when deselected
Transistor-transistor logic (TTL)-compatible inputs and outputs
Easy memory expansion with CE and OE features
Available in Pb-free 44-pin thin small outline package
(TSOP) II.
Functional Description
The CG7480AT is a high performance CMOS Static RAM
organized as 512 K words by 16 bits.
To write to the device, take Chip Enable (CE) and Write Enable
(WE) inputs LOW. If Byte LOW Enable (BLE) is LOW, then data
from I/O pins (I/O0–I/O7), is written into the location specified on
the address pins (A0–A18). If Byte HIGH Enable (BHE) is LOW,
then data from I/O pins (I/O8–I/O15) is written into the location
specified on the address pins (A0–A18).
To read from the device, take Chip Enable (CE) and Output
Enable (OE) LOW while forcing the Write Enable (WE) HIGH. If
Byte LOW Enable (BLE) is LOW, then data from the memory
location specified by the address pins appears on I/O0–I/O7. If
Byte HIGH Enable (BHE) is LOW, then data from memory
appears on I/O8 to I/O15. See the Truth Table on page 11 for a
complete description of read and write modes.
The input/output pins (I/O0–I/O15) are placed in a
high-impedance state when the device is deselected (CE HIGH),
the outputs are disabled (OE HIGH), the BHE and BLE are
disabled (BHE, BLE HIGH), or a write operation (CE LOW, and
WE LOW) is in progress.
The CG7480AT is available in a 44-pin TSOP II package with
center power and ground (revolutionary) pinout.
Logic Block Diagram
INPUT BUFFER
A0
A1
A2
AA34
AA56
512 K × 16
ARRAY
AA78
COLUMN
DECODER
I/O0–I/O7
I/O8–I/O15
BHE
WE
CE
OE
BLE
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-73191 Rev. *A
• San Jose, CA 95134-1709 • 408-943-2600
Revised April 4, 2014


CG7480AT 데이터시트, 핀배열, 회로
CG7480AT
Contents
Pin Configuration ............................................................. 3
Selection Guide ................................................................ 3
Maximum Ratings ............................................................. 4
Operating Range ............................................................... 4
DC Electrical Characteristics .......................................... 4
Capacitance ...................................................................... 5
Thermal Resistance .......................................................... 5
AC Test Loads and Waveforms ....................................... 5
Data Retention Characteristics ....................................... 6
Data Retention Waveform ................................................ 6
AC Switching Characteristics ......................................... 7
Switching Waveforms ...................................................... 8
Truth Table ...................................................................... 11
Ordering Information ...................................................... 12
Ordering Code Definitions ......................................... 12
Package Diagrams .......................................................... 13
Acronyms ........................................................................ 14
Document Conventions ................................................. 14
Units of Measure ....................................................... 14
Document History Page ................................................. 15
Sales, Solutions, and Legal Information ...................... 16
Worldwide Sales and Design Support ....................... 16
Products .................................................................... 16
PSoC® Solutions ...................................................... 16
Cypress Developer Community ................................. 16
Technical Support ..................................................... 16
Document Number: 001-73191 Rev. *A
Page 2 of 16




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CG7480AT

8-Mbit (512 K x 16) Static RAM - Cypress