參數(shù)資料
型號(hào): IDT70V3389S4BFI
廠(chǎng)商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類(lèi): DRAM
英文描述: HIGH-SPEED 3.3V 64K x 18 SYNCHRONOUS PIPELINED DUAL-PORT STATIC RAM WITH 3.3V OR 2.5V INTERFACE
中文描述: 64K X 18 DUAL-PORT SRAM, 4.2 ns, PBGA208
封裝: FINE PITCH, BGA-208
文件頁(yè)數(shù): 13/17頁(yè)
文件大?。?/td> 176K
代理商: IDT70V3389S4BFI
6.42
IDT70V3389S
High-Speed 64K x 18 Dual-Port Synchronous Pipelined Static RAM Industrial and Commercial Temperature Ranges
ADDRESS
An
CLK
DATA
OUT
Qx - 1
(2)
Qx
Qn
Qn + 2
(2)
Qn + 3
ADS
CNTEN
t
CYC2
t
CH2
t
CL2
4832 drw 11
t
SA
t
HA
t
SAD
t
HAD
t
CD2
t
DC
READ
EXTERNAL
ADDRESS
READ WITH COUNTER
COUNTER
HOLD
t
SAD
t
HAD
t
SCN
t
HCN
READ
WITH
COUNTER
Qn + 1
R/
W
ADDRESS
An
An +1
An + 2
An + 3
An + 4
An + 5
DATA
IN
Dn + 3
Dn + 2
CE
0
CLK
4832 drw 10
DATA
OUT
Qn
Qn + 4
CE
1
UB
,
LB
OE
t
CH2
t
CL2
t
CYC2
t
CKLZ
t
CD2
t
OHZ
t
CD2
t
SD
t
HD
READ
WRITE
READ
t
SC
t
HC
t
SB
t
HB
t
SW
t
HW
t
SA
t
HA
(3)
(1)
t
SW
t
HW
(4)
&,8**5'***8
#
NOTES:
1.
CE
0
,
OE
,
UB
,
LB
= V
IL
; CE
1
, R/
W
, and
CNTRST
= V
IH
.
2. If there is no address change via
ADS
= V
IL
(loading a new address) or
CNTEN
= V
IL
(advancing the address), i.e.
ADS
= V
IH
and
CNTEN
= V
IH
, then
the data output remains constant for subsequent clocks.
&,8 **AA,AA*
OE
*#
#
NOTES:
1. Output state (High, Low, or High-impedance) is determned by the previous cycle control signals.
2.
CE
0
,
UB
,
LB
, and
ADS
= V
IL
; CE
1
,
CNTEN
, and
CNTRST
= V
IH
.
3. Addresses do not have to be accessed sequentially since
ADS
= V
IL
constantly loads the address on the rising edge of the CLK; numbers are for reference use
only.
4. This timng does not meet requirements for fastest speed grade. This waveformindicates how logically it could be done if timng so allows.
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