IDT72V3623_15 Datasheet, PDF (1/28 Pages) Integrated Device Technology – 3.3 VOLT CMOS SyncFIFO WITH

3.3 VOLT CMOS SyncFIFO^TM WITH
BUS-MATCHING
256 x 36
1,024 x 36
IDT72V3623
IDT72V3643
FEATURES:
• Memory storage capacity:
IDT72V3623–256 x 36
IDT72V3643–1,024 x 36
• Clock frequencies up to 100 MHz (6.5 ns access time)
• Clocked FIFO buffering data from Port A to Port B
• IDT Standard timing (using EF and FF) or First Word Fall
Through Timing (using OR and IR flag functions)
• Programmable Almost-Empty and Almost-Full flags; each has
three default offsets (8, 16 and 64)
• Serial or parallel programming of partial flags
• Port B bus sizing of 36 bits (long word), 18 bits (word) and 9 bits
(byte)
• Big- or Little-Endian format for word and byte bus sizes
• Reset clears data and configures FIFO, Partial Reset clears
data but retains configuration settings
• Mailbox bypass registers for each FIFO
• Free-running CLKA and CLKB may be asynchronous or
coincident (simultaneous reading and writing of data on a single
clock edge is permitted)
• Easily expandable in width and depth
• Auto power down minimizes power dissipation
• Available in a space-saving 128-pin Thin Quad Flatpack (TQFP)
• Pin and functionally compatible versions of the 5V operating
IDT723623/723643
• Industrial temperature range (–40°C to +85°C) is available
• Green parts available, see ordering information
FUNCTIONAL BLOCK DIAGRAM
MBF1
CLKA
CSA
W/RA
ENA
MBA
Port-A
Control
Logic
Mail 1
Register
RS1
FIFO1
RS2
Mail1,
Mail2,
36
RAM ARRAY
36
256 x 36
1,024 x 36
36
PRS
Reset
Logic
36
A0-A35
Write
Pointer
Read
Pointer
B0-B35
FF/IR
AF
Status Flag
Logic
EF/OR
AE
SPM
FS0/SD
FS1/SEN
MBF2
36
Programmable Flag
Timing
Offset Registers
Mode
10
Mail 2
Register
36
Port-B
Control
Logic
FWFT
CLKB
CSB
W/RB
ENB
MBB
BE
BM
SIZE
4662 drw01
IDT and the IDT logo are registered trademark of Integrated Device Technology, Inc. SyncFIFO 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.
MARCH 2015
DSC-4662/7