IDT72V3622_15 Datasheet, PDF (1/29 Pages) Integrated Device Technology – 3.3 VOLT CMOS SyncBiFIFO

3.3 VOLT CMOS SyncBiFIFO^TM
256 x 36 x 2
512 x 36 x 2
1,024 x 36 x 2
IDT72V3622
IDT72V3632
IDT72V3642
FEATURES:
• Memory storage capacity:
IDT72V3622 – 256 x 36 x 2
IDT72V3632 – 512 x 36 x 2
IDT72V3642 – 1,024 x 36 x 2
• Supports clock frequencies up to 100 MHz
• Fast access times of 6.5ns
• Free-running CLKA and CLKB may be asynchronous or coincident
(simultaneous reading and writing of data on a single clock edge
is permitted)
• Two independent clocked FIFOs buffering data in opposite direc-
tions
• Mailbox bypass register for each FIFO
• Programmable Almost-Full and Almost-Empty flags
• Microprocessor Interface Control Logic
• FFA/IRA, EFA/ORA, AEA, and AFA flags synchronized by CLKA
• FFB/IRB, EFB/ORB, AEB, and AFB flags synchronized by CLKB
• Select IDT Standard timing (using EFA, EFB, FFA and FFB flags
functions) or First Word Fall Through timing (using ORA, ORB, IRA
and IRB flag functions)
• Available space-saving 120-pin Thin Quad Flatpack (TQFP)
• Functionally compatible to the 5V operating IDT723622/723632/
723642
• Industrial temperature range (–40^οC to +85^οC) is available
• Green parts available, see ordering information
DESCRIPTION:
The IDT72V3622/72V3632/72V3642 are functionally compatible versions
of the IDT723622/723632/723642, designed to run off a 3.3V supply for
exceptionally low-power consumption. These devices are monolithic, high-
FUNCTIONAL BLOCK DIAGRAM
CLKA
CSA
W/RA
ENA
MBA
Port-A
Control
Logic
RST1
FIFO1,
Mail1
Reset
Logic
36
Mail 1
Register
RAM
ARRAY
256 x 36
512 x 36
1,024 x 36
Write
Pointer
Read
Pointer
MBF1
36
FFA/IRA
AFA
FIFO 1
Status Flag
Logic
EFB/ORB
AEB
FS0
FS1
A0 - A35
EFA/ORA
AEA
Programmable Flag Timing
Offset Registers
Mode
10
FIFO 2
Status Flag
Logic
Read
Write
36
Pointer
Pointer
RAM
ARRAY
256 x 36
512 x 36
1,024 x 36
Mail 2
Register
MBF2
IDT and the IDT logo are registered trademark of Integrated Device Technology, Inc SyncBiFIFO is a trademark of Integrated Device Technology, Inc.
COMMERCIAL TEMPERATURE RANGE
1
© 2015 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.
FWFT
B0 - B35
FFB/IRB
AFB
36
FIFO2,
Mail2
Reset
Logic
RST2
Port-B
Control
Logic
CLKB
CSB
W/RB
ENB
MBB
4660 drw 01
FEBRUARY 2015
DSC-4660/9