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IDT70V631S12BFI Datasheet(PDF) 5 Page - Integrated Device Technology

Part # IDT70V631S12BFI
Description  HIGH-SPEED 3.3V 256K x 18 ASYNCHRONOUS DUAL-PORT STATIC RAM
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT70V631S12BFI Datasheet(HTML) 5 Page - Integrated Device Technology

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IDT70V631S
High-Speed 3.3V 256K x 18 Asynchronous Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Pin Names
NOTES:
1. VDD, OPTX, and VDDQX must be set to appropriate operating levels prior to
applying inputs on I/OX.
2. OPTX selects the operating voltage levels for the I/Os and controls on that port.
If OPTX is set to VIH (3.3V), then that port's I/Os and controls will operate at 3.3V
levels and VDDQX must be supplied at 3.3V. If OPTX is set to VIL (0V), then that
port's I/Os and controls will operate at 2.5V levels and VDDQX must be supplied
at 2.5V. The OPT pins are independent of one another—both ports can operate
at 3.3V levels, both can operate at 2.5V levels, or either can operate at 3.3V
with the other at 2.5V.
Left Port
Right Port
Names
CE0L,
CE1L
CE0R,
CE1R
Chip Enables
R/WL
R/WR
Read/Write Enable
OEL
OER
Output Enable
A0L - A17L
A0R - A17R
Address
I/O0L - I/O17L
I/O0R - I/O17R
Data Input/Output
SEML
SEMR
Semaphore Enable
INTL
INTR
Interrupt Flag
BUSYL
BUSYR
Busy Flag
UBL
UBR
Upper Byte Select
LBL
LBR
Lower Byte Select
VDDQL
VDDQR
Power (I/O Bus) (3.3V or 2.5V)(1)
OPTL
OPTR
Option for selecting VDDQX(1,2)
M/S
Master or Slave Select
VDD
Power (3.3V)(1)
VSS
Ground (0V)
TDI
Test Data Input
TDO
Test Data Output
TCK
Test Logic Clock (10MHz)
TMS
Test Mode Select
TRST
Reset (Initialize TAP Controller)
5622 tbl 01


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