ZBTTM Feature - No dead cycles between write and read cycles
◆◆
◆
◆◆
Internally synchronized output buffer enable eliminates the
need to control
◆◆
◆
◆◆
Single R/
◆◆
◆
◆◆
Positive clock-edge triggered address, data, and control
signal registers for fully pipelined applications
◆◆
◆
◆◆
4-word burst capability (interleaved or linear)
◆◆
◆
◆◆
Individual byte write (
◆◆
◆
◆◆
Three chip enables for simple depth expansion
◆◆
◆
◆◆
3.3V power supply (±5%)
◆◆
◆
◆◆
2.5V I/O Supply (VDDQ)
◆◆
◆
◆◆
Power down controlled by ZZ input
◆◆
◆
◆◆
Packaged in a JEDEC standard 100-pin plastic thin quad and
OEOE
OE
OEOE
WW
W (READ/WRITE) control pin
WW
BWBW
BWBW
BW1 -
BW4) control (May tie active)
BWBW
BWBW
flatpack (TQFP), 119 ball grid array (BGA) and 165 fine pitch
ball grid array (fBGA)
Description
The IDT71V65602/5802 are 3.3V high-speed 9,437,184-bit
(9 Megabit) synchronous SRAMs. They are designed to eliminate dead
bus cycles when turning the bus around between reads and writes, or
writes and reads. Thus, they have been given the name ZBTTM, or Zero
Bus Turnaround.
IDT71V65602
IDT71V65802
Address and control signals are applied to the SRAM during one clock
cycle, and two cycles later the associated data cycle occurs, be it read or write.
The IDT71V65602/5802 contain data I/O, address and control signal
registers. Output enable is the only asynchronous signal and can be used to
disable the outputs at any given time.
A Clock Enable (CEN) pin allows operation of the IDT71V65602/5802
to be suspended as long as necessary. All synchronous inputs are ignored
when (CEN) is high and the internal device registers will hold their previous
values.
There are three chip enable pins (CE1, CE2, CE2) that allow the
user to deselect the device when desired. If any one of these three are not
asserted when ADV/LD is low, no new memory operation can be initiated.
However, any pending data transfers (reads or writes) will be completed. The
data bus will tri-state two cycles after chip is deselected or a write is initiated.
The IDT71V65602/5802 have an on-chip burst counter. In the burst
mode, the IDT71V65602/5802 can provide four cycles of data for a single
address presented to the SRAM. The order of the burst sequence is defined
by the LBO input pin. The LBO pin selects between linear and interleaved burst
sequence. The ADV/LD signal is used to load a new external address (ADV/
LD = LOW) or increment the internal burst counter (ADV/LD = HIGH).
The IDT71V65602/5802 SRAM utilize IDT's latest high-performance
CMOS process, and are packaged in a JEDEC Standard 14mm x 20mm 100pin thin plastic quad flatpack (TQFP) as well as a 119 ball grid array (BGA)
and a 165 fine pitch ball grid array (fBGA).
Pin Description Summary
CE
OE
CEN
BW
LBO
ZBT and Zero Bus Turnaround are trademarks of Integrated Device Technology, Inc. and the architecture is supported by Micron Technology and Motorola, Inc.
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
Symbol
Pin Function
I/O
Active
Description
18
1
4
1
4
1
4
1
2
1
2
1
2
2
1
2
2
1
2
31
P4
DD
DDQ
SS
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Pin Definitions
(1)
A0-A
ADV/
BW
CE
R/
CEN
-
,
W
BW
CE
LD
Address InputsIN/ASynchronous Address inputs. The address register is triggered by a combination of the
rising edge of CLK, ADV/
LD
low,
low, and true chip enab le s.
CEN
Advance / LoadIN/AADV/LD is a synchronous input that is used to load the internal registers with new address
and control when it is sampled low at the rising edge of clock with the chip selected. When
ADV/
is low with the chip deselected, any burst in progress is terminated. When ADV/
LD
is s amp l e d hi g h the n the inte r nal b ur st c o unte r i s ad va nc e d fo r any burs t that was in
progress. The external addresses are ignored when ADV/
is sampled high.
LD
Re ad / WriteIN/AR/W signal is a synchronous input that identifies whether the current load cycle initiated is a
Read or Write access to the memory array. The data bus activity for the current cycle takes
place two clock cycle s later.
Clock EnableILOWSynchronous Clock Enable Input. When
inputs, including clock are ignored and outputs re main unchanged. The effect of
is samp led hig h, al l other s y nchrono us
CEN
CEN
sampled high on the device outputs is as if the low to high clock transition did not occur.
Individual Byte
Write E nab le s
For normal operation,
ILOWSynchro nous byte write enables. Each 9-bit byte has its own active low byte write enable.
On load write c yc le s (When R/
signal (
-
) must be valid. The byte write signal must also b e valid on each cycle of
BW
BW
a burst write. Byte Write signals are ignored when R/
b yte (s ) o f d ata ar e writte n i nto the de vi c e two cy c le s l ate r.
must be sampled low at rising edge of clock.
CEN
and ADV/LD are sampled low) the appropriate byte write
W
is sampled high. The appropriate
W
BW
-
can all be tied low if
BW
always doing write to the entire 36-bit word.
Chip E nablesILOWSynchronous active low chip enable.
IDT71V65 602/ 5802 . (
CE
or
sampled high or CE2 sampled low) and ADV/LD low at the
CE
rising edge of clock, initiates a deselect cycle. The ZBT
CE
and
are us e d wi th CE2 to e nab le the
CE
TM
has a two cycle deselect, i.e.,
the data bus will tri-state two clock cycles after deselect is initiated.
LD
CE
CLKClockIN/AThis is the clock input to the IDT71V65602/5802. Except for
Chip Enab leIHIGHSync hrono us active hig h c hip e nable . CE2 is used with
CE
has inverted polarity but otherwise identical to
CE
and
CE
and
to e nab le the c hip .
CE
.
CE
, all tim ing re fe re n ce s fo r the
OE
device are made with respect to the rising edge of CLK.
I/O0-I/O
I/OP1-I/O
LBO
Data Input/OutputI/ON/ASynchro nous data input/output (I/O) pins. Both the data input path and data output path are
registered and triggered by the rising edge of CLK.
Linear Burst OrderILOWBurst order selection input. When
When
is low the Linear burst sequence is selected.
LBO
is high the Interleaved burst sequence is selected.
LBO
is a static input and it must
LBO
not change during device operation.
OE
Outp ut E nab l eILOWAs y nc hro no us o utp ut e na b le . OE must be lo w to read d ata from the IDT71V65602/5802.
When
actively controlled for read and write cycles. In normal operation,
is high the I/O pins are in a high-impedance state. OE does not need to be
OE
can be tied low.
OE
ZZSleep ModeIHIGHAsynchronous sleep mode input. ZZ HIGH will gate the CLK internally and power down
71V65602/5802 to the lowest power consumption level. Data retention is guaranteed in
Sleep Mode.
V
V
V
NOTE:
Po we r S up p lyN/ AN/ A3 .3V c o re p o we r s up p l y.
Power SupplyN/AN/A2.5V I/O Supply.
GroundN/AN/AGround.
1. All synchronous inputs must meet specified setup and hold times with respect to CLK.
5303 tbl 02
6.422
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Functional Block Diagram
LBO
Address A [0:17]
CE1, CE2, CE2
R/W
CEN
ADV/LD
BWx
Clock
DQ
DQ
egister
Input R
DQ
Clk
Address
Control
Control Logic
Clk
256Kx36 BIT
MEMORY ARRAY
DIDO
Mux
D
Output Register
Q
Sel
OE
Gate
Data I/O[0:31],
I/O P[1:4]
5303 drw 01a
,
6.42
3
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
Symbol
Para mete r
Min.
Typ.
Max.
Unit
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Functional Block Diagram
Address A [0:18]
CE1, CE2, CE2
ADV/LD
Clock
LBO
R/W
CEN
BWx
DQ
DQ
egister
Input R
DQ
Clk
Address
Control
Control Logic
Clk
512x18 BIT
MEMORYARRAY
DIDO
Mux
D
Output Register
Q
Sel
OE
Recommended DC Operating
Conditions
DD
V
Core S upp ly Vo ltage3.1353.33.465V
DDQ
I/O Sup p ly Vol tage2 .3752.52.625V
V
SS
Supply Voltage000V
V
IH
Input High Voltage - Inputs1.7
V
IH
Input High Voltage - I/O1.7
V
IL
Input Low Voltage-0.3
V
NOTES:
1. V IL (min.) = –1.0V for pulse width less than tCYC/2, once per cycle.
____
VDD+0.3V
____
DDQ
V
+0.3V
(1 )
____
0.7V
5303 tbl 03
6.424
Gate
DataI/O [0:15],
I/O P[1:2]
5303 drw 01
,
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
Grade
Ambient
Temperature
(1)
VSSVDDV
DDQ
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Recommended Operating
Temperature and Supply Voltage
Comme rcial0° C to +70° C0V3. 3V± 5%2.5V±5%
Industrial-40° C to +85° C0V3.3V±5%2.5V± 5%
NOTES:
5303tb l 05
1. During production testing, the case temperature equals the ambient temperature.
1. Pins 14, 16 and 66 do not have to be connected directly to VDD as long as the input voltage is ≥ VIH.
2. Pin 84 is reserved for a future 16M.
3. DNU=Do not use. Pins 38, 39, 42 and 43 are reserved for respective JTAG pins: TMS, TDI, TDO and TCK. The
current die revision allows these pins to be left unconnected, tied Low (VSS) or tied High (VDD).
6.42
5
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
Symbol
Rating
Com mercial &
Industrial
Unit
V
TE R M
(2 )
Ter mi nal Vo l tag e wi th
Re s p ec t to G ND
-0.5 to +4.6
V
V
TE R M
(3,6)
Ter mi nal Vo l tag e wi th
Re s p ec t to G ND
-0.5 to V
DD
V
V
TE R M
(4,6)
Ter mi nal Vo l tag e wi th
Re s p ec t to G ND
-0.5 to V
DD
+0.5
V
V
TE R M
(5,6)
Ter mi nal Vo l tag e wi th
Re s p ec t to G ND
-0.5 to V
DDQ
+0.5
V
T
A
(7)
Co mme rci al
-0 to +70
o
C
Indus trial
-40 to +85
o
C
T
BIAS
Temperature
Und e r B i as
-55 to +125
o
C
T
STG
Storage
Temperature
-55 to +125
o
C
PTPo we r Di ss i p ati o n
2.0WI
OUT
DC Outp ut Cu rre n t
50
mA
5303 tbl 06
Symbol
Parameter
(1)
Conditions
Max.
Unit
CINInp ut Cap ac itanc e
VIN = 3dV
5pFC
I/O
I/O Cap acitanc e
V
OUT
= 3dV
7
pF
5303 tbl 07
Symbol
Parameter
(1)
Conditions
Max.
Uni t
IN
I/O
OUT
Symb ol
Par a meter
(1)
Conditions
Max .
Unit
CINInp ut Capa ci tanc e
VIN = 3dV
TBDpFC
I/O
I/O Cap aci tance
V
OUT
= 3dV
TBD
pF
5303 tb l 0 7b
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may
(1)
cause permanent damage to the device. This is a stress rating only and functional
Top View
100 TQFP
NOTES:
1. Pins 14, 16 and 66 do not have to be connected directly to VDD as long as
the input voltage is ≥ VIH.
2. Pin 84 is reserved for a future 16M.
3. DNU=Do not use. Pins 38, 39, 42 and 43 are reserved for respective
JTAG pins: TMS, TDI, TDO and TCK. The current die revision allows
these pins to be left unconnected, tied Low (VSS) or tied High (VDD).
operation of the device at these or any other conditions above those indicated
in the operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect reliability.
2. VDD terminals only.
3. VDDQ terminals only.
4. Input terminals only.
5. I/O terminals only.
6. This is a steady-state DC parameter that applies after the power supply has
reached its nominal operating value. Power sequencing is not necessary;
however, the voltage on any input or I/O pin cannot exceed VDDQ during power
supply ramp up.
7. During production testing, the case temperature equals TA.
100 TQFP Capacitance
(TA = +25° C, f = 1.0MHz)
(1)
119 BGA Capacitance
(1)
(TA = +25° C, f = 1.0MHz)
165 fBGA Capacitance
(TA = +25° C, f = 1.0MHz)
NOTE:
1. This parameter is guaranteed by device characterization, but not production tested.
(1)
6.426
C
Inp ut Ca p ac itan c eVIN = 3dV7pF
I/O Cap a ci tanc eV
C
= 3dV7pF
5303 tbl 07a
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Pin Configuration - 256K X 36, 119 BGA
1234567
DDQ
V
A
BNCCE
NC
CA
16
D
EI/O
FV
G
HI/O
JV
KI/O
LI/O
MV
NI/O
PI/O
I/O
DDQ
I/O
DDQ
DDQ
I/O
17
I/O
I/O
20
I/O
22
I/O
24
I/O
25
I/O
I/O
29
I/O
31
I/O
RNCA
TNCNCA
UV
DDQ
DNU
2
6
A
2
7
P3
18
19
21
23
DD
V
26
27
28
30
P4
5
(3)
A
A
A
SS
V
SS
V
SS
V
BW
SS
V
DD(1)
V
SS
V
BW
SS
V
SS
V
SS
V
LBO
10
DNU
4
3
2
NC(2)
ADV/LD
DD
V
NCV
1
CE
OE
A17
3
W
R/
DD
V
CLKV
NC
4
CEN
1
A
0
A
DD
V
11
A
DNU
(3)
(3)
A
A
A
SS
SS
V
SS
V
BW
SS
V
DD(1)
V
SS
BW
SS
V
SS
V
SS
V
V
A
DNU
8
9
12
DD(1)
14
2
1
(3)
16
A
CE
2
15
A
P2
I/O
13
I/O
12
I/O
11
I/O
9
I/O
DD
V
6
I/O
4
I/O
3
I/O
2
I/O
P1
I/O
13
A
NCZZ
(3)
DNU
DDQ
V
NC
NC
15
I/O
14
I/O
DDQ
V
10
I/O
8
I/O
DDQ
V
7
I/O
5
I/O
DDQ
V
1
I/O
0
I/O
NC
DDQ
V
5303 drw 13A
,
Top View
Pin Configuration - 512K X 18, 119 BGA
1234567
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
DDQ
V
NCCE
NC
8
I/O
NCI/O
DDQ
V
NCI/O
11
I/O
DDQ
V
NCI/O
13
I/O
DDQ
V
15
I/O
NCI/O
NCA
NCA
DDQ
V
6
A
2
7
A
NCV
9
NCV
10
NCV
DD
V
12
NCNC
14
I/O
NCV
P2
5
10
(3)
DNU
A
A
A
SS
SS
V
SS
BW
SS
DD(1)
V
SS
V
SS
V
SS
V
SS
SS
V
LBO
A
DNU
4
3
ADV/
2
2
15
(3)
NC(2)
LD
DD
V
NCV
CE
1
OE
A18
R/
W
DD
V
CLKV
CEN
1
A
0
A
DD
V
NCA
(3)
DNU
A
A
13
A
SS
SS
V
SS
V
SS
V
SS
V
DD(1)
V
SS
BW
SS
V
SS
V
SS
V
V
14
DNU
8
9
1
DD(1)
(3)
16
A
2
CE
17
A
P1
I/O
NCI/O
6
I/O
NCI/O
4
I/O
DD
V
NCI/O
2
I/O
NCV
1
I/O
NCI/O
12
A
11
A
(3)
DNU
DDQ
V
NC
NC
NC
7
DDQ
V
5
NC
DDQ
V
3
NC
DDQ
NC
0
NC
ZZ
DDQ
V
5303 drw 13B
NOTES:
Top View
1. J3, J5, and R5 do not have to be directly connected to VDD as long as the input voltage is ≥ VIH.
2. A4 is reserved for future 16M.
3. DNU = Do not use. Pin U2, U3, U4, U5 and U6 are reserved for respective JTAG pins: TMS, TDI, TCK, TDO and TRST. The current die revision allows
these pins to be left unconnected, tied LOW (VSS), or tied HIGH (VDD).
6.42
7
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
12
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Pin Configuration - 256K X 36, 165 fBGA
1234567891011
ANC
(2)
BNC A
CI/OP3NCV
DI/O17I/O
A
7
6
16
V
CE
CE
DDQ
DDQ
BW
1
2
BW
V
SS
V
DD
BW
3
4
BW
V
V
2
SS
SS
CE
CLKR/
1
V
SS
V
SS
CEN
2
V
V
ADV
/LD
W
SS
SS
OE
V
V
SS
DD
A
17
(2)
NC
V
DDQ
V
DDQ
A
8
A
9
NCI/O
I/O
15
NC
I/O
NC
(2)
P2
14
EI/O19I/O
FI/O21I/O
GI/O23I/O
HV
JI/O
(1)
DD
V
DD
25
I/O
KI/O27I/O
LI/O29I/O
MI/O31I/O
NI/OP4NCV
PNCNC
R
LBO
NC
V
18
20
22
(1)
24
26
28
30
(2)
(2)
DDQ
V
DDQ
V
DDQ
NCV
V
DDQ
V
DDQ
V
DDQ
V
DDQ
DDQ
A
5
A
4
V
DD
V
DD
V
DD
DD
V
DD
V
DD
V
DD
V
DD
V
SS
A
2
A
3
V
V
V
V
V
V
V
V
DNU
DNU
DNU
SS
SS
SS
SS
SS
SS
SS
SS
V
SS
V
SS
V
SS
V
SS
V
SS
V
SS
V
SS
V
SS
(3)
(3)
(3)
NCV
A
1
A
0
Pin Configuration - 512K X 18, 165 fBGA
1234567891011
ANC
(2)
BNC A6CE
CNC NCV
A
7
CE
DDQ
1
2
BW
NC
V
2
SS
NC
BW
V
CE
2
CLKR/
1
SS
V
SS
V
V
V
V
V
V
V
V
DD
DNU
DNU
CEN
V
SS
SS
SS
SS
SS
SS
SS
SS
(1)
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
SS
(3)
A
10
(3)
A
11
ADV
W
SS
OE
V
V
DDQ
V
DDQ
V
DDQ
I/O
I/O
I/O
13
11
9
I/O
I/O
I/O
12
10
8
NCNCZZ
V
DDQ
V
DDQ
V
DDQ
V
DDQ
V
DDQ
A
13
A
12
/LD
A
18
NC
SS
V
DDQ
I/O
7
I/O
5
I/O
3
I/O
1
NCI/O
A
14
A
15
A
8
(2)
A
9
NCI/O
I/O
6
I/O
4
I/O
2
I/O
0
P1
NC
A
16
5303 tb l 25a
A
10
(2)
NC
P1
DNC I/O8V
ENC I/O9V
FNCI/O10V
GNC I/O11V
HV
JI/O
(1)
DD
12
KI/O13NCV
LI/O
MI/O
14
15
NI/OP2NCV
PNC NC
R
LBO
NOTES:
(1)
V
DD
NCV
NCV
NCV
(2)
(2)
NC
DDQ
DDQ
DDQ
DDQ
NCV
DDQ
DDQ
DDQ
DDQ
DDQ
A
5
A
4
V
DD
V
DD
V
DD
V
DD
DD
V
DD
V
DD
V
DD
V
DD
V
SS
A
2
A
3
V
V
V
V
V
V
V
V
V
DNU
DNU
DNU
SS
SS
SS
SS
SS
SS
SS
SS
SS
V
SS
V
SS
V
SS
V
SS
V
SS
V
SS
V
SS
V
SS
V
SS
(3)
(3)
(3)
NCV
A
1
A
0
V
V
V
V
V
V
V
V
V
DD
DNU
DNU
SS
SS
SS
SS
SS
SS
SS
SS
SS
(1)
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
SS
(3)
(3)
A
11
A
V
DDQ
V
DDQ
V
DDQ
V
DDQ
NCI/O
NCI/O
NCI/O
NCI/O
NCNCZZ
V
DDQ
V
DDQ
V
DDQ
V
DDQ
V
DDQ
A
14
A
13
I/O
3
I/O
2
I/O
1
I/O
0
NCNC
A
15
A
16
5303 tb l 25b
A
7
6
5
4
NC
NC
NC
NC
NC
17
1. H1, H2, and N7 do not have to be directly connected to VDD as long as the input voltage is ≥ VIH.
2. B9, B11, A1, R2 and P2 is reserved for future 18M, 36M, 72M, 144M and 288M, respectively.
3. DNU=Do not use. Pins P5, R5, P7, R7 and N5 are reserved for respective JTAG pins: TDI, TMS, TDO, TCK and TRST on future revisions. The current die
revision allows these pins to be left unconnected, tied LOW (VSS), or tied HIGH (VDD).
6.428
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
R/WChip
(5)
Enable
ADV/
x
ADDRESS
USED
PREVIOUS CYCLE
CURRENT CYCLE
I/O
(2 cycles l ater)
OP ERATION
R/
1BW2BW3
(3)
4
(3)
READHXXXXWRITE ALL BYTES
LLLLL
WRITE BYTE 1 (I/O[0:7], I/O
P1
)
(2)
LLHHH
WRITE BYTE 2 (I/O[8:15], I/O
P2
)
(2)
LHLHH
WRITE BYTE 3 (I/O[16:23] , I/O
P3
)
(2,3)
LHHLH
WRITE BYTE 4 (I/O[24:31] , I/O
P4
)
(2,3)
LHHHL
NO WRITE
LHHHH
5303 tbl 09
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Synchronous Truth Table
CEN
LD
(1)
BW
D
Q
HiZ
(7)
(7)
(7)
(7)
LLSe le ctLValidEx ternalXLOAD WRITED
LHSele ctLXEx ternalXLOAD READQ
LXXHValidInte r nalLOA D WRITE /
BURS T WRITE
LXXHXI nte rnalLOAD RE AD /
BURST READ
LXDeselectLXXXDESELECT or STOP
BURS T WRITE
(Advance burst counter)
BURST READ
(Advance burst counter)
(2)
(2)
(3)
LXXHXXDESELECT / NOOPNOOPHiZ
HXXXXXXSUS PE ND
NOTES:
1. L = VIL, H = VIH, X = Don’t Care.
2. When ADV/LD signal is sampled high, the internal burst counter is incremented. The R/ W signal is ignored when the counter is advanced. Therefore the nature of
the burst cycle (Read or Write) is determined by the status of the R/W signal when the first address is loaded at the beginning of the burst cycle.
3. Deselect cycle is initiated when either (CE1, or CE2 is sampled high or CE2 is sampled low) and ADV/LD is sampled low at rising edge of clock. The data bus will
tri-state two cycles after deselect is initiated.
4. When CEN is sampled high at the rising edge of clock, that clock edge is blocked from propogating through the part. The state of all the internal registers and the I/
Os remains unchanged.
5. To select the chip requires CE1 = L, CE2 = L, CE2 = H on these chip enables. Chip is deselected if any one of the chip enables is false.
6. Device Outputs are ensured to be in High-Z after the first rising edge of clock upon power-up.
7. Q - Data read from the device, D - data written to the device.
(4)
Previous Value
5303 tbl 08
Partial Truth Table for Writes
NOTES:
1. L = VIL, H = VIH, X = Don’t Care.
2. Multiple bytes may be selected during the same cycle.
3. N/A for X18 configuration.
(1)
W
BW
BW
6.42
9
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
Sequence 1
Sequence 2
Sequence 3
Sequence 4
A1A0A1A0A1A0A1
A0
Sequence 1
Sequence 2
Sequence 3
Sequence 4
A1A0A1A0A1A0A1
A0
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Interleaved Burst Sequence Table (LBO=VDD)
First Address00011011
Second Address01001110
Third Address10110001
Fourth Address
NOTE:
1. Upon completion of the Burst sequence the counter wraps around to its initial state and continues counting.
(1)
11100100
Linear Burst Sequence Table (LBO=VSS)
First Address00011011
Second Address01101100
5303 tbl 10
Third Address10110001
Fourth Address
NOTE:
1. Upon completion of the Burst sequence the counter wraps around to its initial state and continues counting.
(1)
Functional Timing Diagram
CYCLE
CLOCK
DATA
(2)
(2)
(2)
ADDRESS
(A0 - A17)
CONTROL
(R/W,ADV/LD, BWx)
I/O [0:31], I/O P[1:4]
NOTES:
1. This assumes CEN, CE1, CE2, CE2 are all true.
2. All Address, Control and Data_In are only required to meet set-up and hold time with respect to the rising edge of clock. Data_Out is valid after a clock-to-data
delay from the rising edge of clock.
n+29
A29
C29
D/Q27
11000110
(1)
n+30
A30
C30
D/Q28
n+31
A31
C31
D/Q29
n+32
A32
C32
D/Q30
n+33
A33
C33
D/Q31
n+34
A34
C34
D/Q32
n+35
A35
C35
D/Q33
n+36
A36
C36
D/Q34
n+37
A37
C37
D/Q35
5303 tbl 11
5303 drw 03
,
6.4210
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
Cycl e
Address
R/WADV/
(1)
xOEI/O
Comments
1
0+1
2
2
3
2+1
4
3+1
4
5
6
7
8
7+1
9
Cycl e
Address
R/WADV/
(2)
xOEI/O
Comments
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Device Operation - Showing Mixed Load, Burst,
CE
(2)
CENBW
Desele ct or STOP
Desele ct or STOP
Load write
Desele ct or STOP
NOOP
Deselect and NOOP Cycles
LD
nA0HLLLXXXLo ad re ad
n+1XXHXLXXXBurst re ad
n+2A
n+3XXLHLXLQ
n+4 X X H XLXLQ1NOOP
n+5A
n+6XXHXLXXZBurst read
n+7XXLHLXLQ
n+8A
n+9XXHXLLXZBurst write
n+10A
n+11XXLHLXXD
n+12XXHXLXXD
n+13A
n+14A
HL LLXLQ0Load read
HLLLXXZLoad read
L L LLLLQ
L L LLLXD3Load write
L L LLLXZLoad write
HLLLXXZLoad read
n+15A
L L LLLXD5Load write
n+16 X X H XLLLQ6Burst write
n+17A
n+18XXHXLXXD
n+19A
NOTES:
1. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
2. H = High; L = Low; X = Don’t Care; Z = High Impedance.
Read Operation
HL LLXXD7Load read
Burst re ad
L L LLLLQ8Load write
(1)
LD
CE
CENBW
nA0HLLLXXXAddress and Control meet setup
n+1XXXXLXXXClock Setup Valid
n+2 X X X XXXLQ0Contents of Address A0 Re ad Out
NOTES:
1. H = High; L = Low; X = Don’t Care; Z = High Impedance.
2. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
5303 tbl 12
5303 tbl 13
6.42
11
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
Cycl e
Address
R/WADV/
(2)
xOEI/O
Comments
0+1
0+1
0+2
0+2
1
0+3
0+3
1
2
1+1
1+1
2
Cycl e
Address
R/WADV/
(2)
xOEI/O
Comments
0
0
Cycl e
Address
R/WADV/
(2)
xOEI/O
Comments
0+1
0+1
0+2
0+2
1
0+3
0+3
1
2
1+1
1+1
2
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
LD
(1)
CE
CENBW
Burst Read Operation
nA0HLLLXXXAddress and Control meet setup
n+1XXHXLXXXClock Setup Valid, Advance Counter
n+2 X X H XLXLQ0Address A0 Re ad Out, Inc . Co unt
n+3 X X H XLXLQ
n+4 X X H XLXLQ
n+5A
HL LLXLQ
Address A
Address A
Address A
Re ad Out, Inc . Co unt
Re ad Out, Inc . Co unt
Read Out, Load A
n+6 X X H XLXLQ0Address A0 Re ad Out, Inc . Co unt
n+7 X X H XLXLQ1Address A1 Re ad Out, Inc . Co unt
n+8A
NOTES:
1. H = High; L = Low; X = Don’t Care; Z = High Impedance.
2. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
Write Operation
HL LLXLQ
Address A
(1)
LD
CE
CENBW
Read Out, Load A
nA0LLLLLXXAddress and Control meet setup
n+1XXXXLXXXClock Setup Valid
n+2XXXXLXXD
NOTES:
1. H = High; L = Low; X = Don’t Care; Z = High Impedance.
2. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
Write to Address A
5303 tbl 14
5303 tbl 15
LD
(1)
CE
CENBW
Burst Write Operation
nA0LLLLLXXAddress and Control meet setup
n+1XXHXLLXXClock Se tup Valid , Inc. Count
n+2XXHXLLXD0Address A0 Write, Inc. Count
n+3XXHXLLXD
n+4XXHXLLXD
n+5A
L L LLLXD
Address A
Address A
Address A
Write, Inc. Count
Write, Inc. Count
Write, Lo ad A
n+6XXHXLLXD0Address A0 Write, Inc. Count
n+7XXHXLLXD1Address A1 Write, Inc. Count
n+8A
NOTES:
1. H = High; L = Low; X = Don’t Care; ? = Don’t Know; Z = High Impedance.
2. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
L L LLLXD
Address A
Write, Lo ad A
6.4212
5303 tbl 16
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
Cycl e
Address
R/WADV/
(2)
xOEI/O
Comments
1
2
3
4
Cycl e
Address
R/WADV
(2)
xOEI/O
Comments
1
2
0
3
1
4
2
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Read Operation with Clock Enable Used
LD
CE
CENBW
(1)
nA0HLLLXXXAddress and Control meet setup
n+1XXXXHXXXCloc k n+ 1 Ignore d
n+2A
H L L LXXXClock Valid
n+3XXXXHXLQ0Clock Ignored, Data Q0 is on the bus.
n+4XXXXHXLQ0Clock Ignored, Data Q0 is on the bus.
n+5A
n+6A
n+7A
NOTES:
1. H = High; L = Low; X = Don’t Care; Z = High Impedance.
2. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
1. H = High; L = Low; X = Don’t Care; Z = High Impedance.
2. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
L L LLLXD0Write Data D
L L LLLXD1Write Data D
L L LLLXD2Write Data D
5303 tbl 18
6.42
13
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
Cycl e
Address
R/WADV/
(2)
xOEI/O
(3)
Comments
0
1
2
Cycl e
Address
R/WADV/
(2)
xOEI/O
(3)
Comments
0
1
1
2
5303 tbl 20
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Read Operation with Chip Enable Used
(1)
LD
CE
CENBW
nXXLHLXX?Deselected.
n+1XXLHLXX?Deselected.
n+2A
HLLLXXZAddress and Control meet setup
n+3XXLHLXXZDeselected or STOP.
n+4A
HL LLXLQ0Address A0 Read o ut. Load A1.
n+5XXLHLXXZDeselected or STOP.
n+6XXLHLXLQ1Address A1 Read out. Deselected.
n+7A
HLLLXXZAddress and control meet setup.
n+8XXLHLXXZDeselected or STOP.
n+9XXLHLXLQ2Address A2 Read out. Deselected.
NOTES:
1. H = High; L = Low; X = Don’t Care; ? = Don’t Know; Z = High Impedance.
2. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
3. Device Outputs are ensured to be in High-Z after the first rising edge of clock upon power-up.
Write Operation with Chip Enable Used
LD
CE
CENBW
(1)
nXXLHLXX?Deselected.
5303 tbl 19
n+1XXLHLXX?Deselected.
n+2A
LLLLLXZAddress and Control meet setup
n+3XXLHLXXZDeselected or STOP.
n+4A
L L LLLXD0Address D0 Write in. Load A1.
n+5XXLHLXXZDeselected or STOP.
n+6XXLHLXXD
n+7A
LLLLLXZAddress and control meet setup.
Address D1 Write in. Des ele c ted .
n+8XXLHLXXZDeselected or STOP.
n+9XXLHLXXD2Address D2 Write in. Des ele c ted .
NOTES:
1. H = High; L = Low; X = Don’t Care; ? = Don’t Know; Z = High Impedance.
2. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
6.4214
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
Symbol
Parameter
Test Condi tions
Min.
Max.
Uni t
L
I
DD
LI
DD
LO
OUT
DDQ
OL
OH
5303 tbl 21
Symbol
Parameter
Test Conditions
150MHz
133MHz
100MHz
Unit
Com 'l
Ind
Com 'l
Ind
Com 'l
Ind
IDDOperating Power
S up pl y C urre nt
Device Se lecte d, Outputs Open,
ADV/LD = X, V
DD
= Max.,
VIN > VIH or < VIL, f = f
MAX
325
345
300
320
250
270mAI
SB1
CM OS S tand by Powe r
S up pl y C urre nt
Device Deselected, Outputs Open,
VDD = M ax., V
IN
> VHD or < VLD,
f = 0
406040604060mA
I
SB2
Clock Running Po wer
S up pl y C urre nt
Device Deselected, Outputs Open,
VDD = M ax., V
IN
> VHD or < VLD,
f = f
MAX
120
140
110
130
100
120mAI
SB3
Id le P o we r
S up pl y C urre nt
Device Se lecte d, Outputs Open,
> VIH, VDD = Max.,
VIN > VHD or < VLD, f = f
MAX
406040604060mA
Izz
Full Sleep Mode
S up pl y C urre nt
Device Se lecte d, Outputs Open,
≤ VIL, VDD = M ax ., ZZ
VHDVIN ≥ VHD or ≤ VLD, f = f
MAX
(2, 3 )
406040604060mA
5303 tb l 22
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(VDD = 3.3V +/-5%)
|I
|Input Leak age CurrentVDD = Max., VIN = 0V to V
Input Leakag e Current
|I
|I
V
V
NOTE:
1. The LBO pin will be internally pulled to V DD if it is not actively driven in the application and the ZZ pin will be internally pulled to Vss if not actively driven.
LBO
|
|Output Leakage CurrentV
Output Low VoltageIOL = +6mA, VDD = Min.
Outp ut Hig h Vol tag eIOH = -6mA, VDD = Min.2.0
(1)
VDD = Max., VIN = 0V to V
= 0V to V
, De v i ce De s e l e c te d
___
___
___
___
5µA
30µ A
5µA
0.4V
___
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(2,3)
(1)
(VDD = 3.3V +/-5%)
(2 )
V
(2.3)
CEN
(2,3)
CEN
NOTES:
1. All values are maximum guaranteed values.
2. At f = fMAX, inputs are cycling at the maximum frequency of read cycles of 1/tCYC; f=0 means no input lines are changing.
3. For I/Os VHD = VDDQ – 0.2V, VLD = 0.2V. For other inputs VHD = VDD – 0.2V, VLD = 0.2V.
Input Pulse Levels
Inp ut Ris e / Fa ll Tim e s
Inp ut Timi ng Re fe re nc e Le v e ls
Outp ut Tim ing R efe r e nc e Le vel s
AC Test Load
0
2.5V
to
2ns
V
/2
DDQ
V
/2
DDQ
See Figure 1
5303 tbl 23
6.42
15
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
150MHz
133MHz
100MHz
Symbol
Parameter
Min.
Max.
Min.
Max.
Min.
Max.
Uni t
CYC
F
CH
CL
Output Parameters
CD
CDC
CLZ
CHZ
OE
OLZ
OHZ
Set Up Times
SE
SA
SD
SW
SADV
SC
SB
Hol d T im es
HE
HA
HD
HW
HADV
HC
HB
5303 t bl 24
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
AC Electrical Characteristics
(VDD = 3.3V +/-5%, Commercial and Industrial Temperature Ranges)
t
(1)
t
(2)
t
(2)
t
t
t
(3,4,5)
t
(3,4,5)
t
t
(3,4)
t
(3,4)
t
t
t
t
t
t
t
t
Clock Cycle Time6.7
Clock Frequency
____
Clock High Pulse Width2.0
Clo c k Lo w P uls e Wi dth2.0
Clock High to Valid Data
____
Cl o ck Hig h to Data Chang e1.5
Cl o ck Hig h to Ou tpu t Ac tiv e1.5
Clo ck High to Data Hig h-Z1.531.531.53. 3ns
Output Enab le Access Time
____
Output Enab le Low to Data Active0
Outp ut E nab le Hig h to Data Hi g h-Z
____
Clock Enable Setup Time1.5
Address Setup Time1.5
Data In S etu p Time1.5
Read /Wri te (R/W) Se tup Time1.5
Adv ance /Lo ad (ADV/LD) Se tup Time1.5
Chip Enable/Select Setup Time1.5
Byte Write Enable (BWx) Setup Time1.5
____
150
____
____
3.8
____
____
3.8
____
3.8
____
____
____
____
____
____
____
7.5
____
2.2
2.2
____
1.5
1.5
____
____
1.7
1.7
1.7
1.7
1.7
1.7
1.7
____
133
____
____
4.2
____
____
4.2
____
0
4.2
____
____
____
____
____
____
____
10
____
3.2
3.2
____
1.5
1.5
____
0
____
2.0
2.0
2.0
2.0
2.0
2.0
2.0
____
ns
100MHz
____
____
ns
ns
5ns
____
____
ns
ns
5ns
____
ns
5ns
____
____
____
____
____
____
____
ns
ns
ns
ns
ns
ns
ns
NOTES:
1. tF = 1/tCYC.
2. Measured as HIGH above 0.6VDDQ and LOW below 0.4VDDQ.
3. Transition is measured ±200mV from steady-state.
4. These parameters are guaranteed with the AC load (Figure 1) by device characterization. They are not production tested.
5. To avoid bus contention, the output buffers are designed such that tCHZ(device turn-off) is about 1ns faster thantCLZ(device turn-on) at a given temperatureand voltage.
t
t
t
t
t
t
t
Clo c k En ab le Ho l d Time0.5
Address Hold Time0.5
Data In Hold Time0.5
Read /Wri te (R/W) Hold Time0.5
Adv ance /Lo ad (ADV/LD) Hold Time0.5
Chip Enable/Select Hold Time0.5
Byte Write Enable (BWx) Hold Time0.5
____
____
____
____
____
____
____
0.5
0.5
0.5
0.5
0.5
0.5
0.5
____
____
____
____
____
____
____
0.5
0.5
0.5
0.5
0.5
0.5
0.5
____
____
____
____
____
____
____
The specs as shown do not imply bus contention because tCLZ is a Min. parameter that is worse case at totally different test conditions (0 deg. C, 3.465V) than tCHZ,
which is a Max. parameter (worse case at 70 deg. C, 3.135V).
6.4216
ns
ns
ns
ns
ns
ns
ns
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Timing Waveform of Read Cycle
(1,2,3,4)
around
raps
urst W
(B
C
D
C
t
inates
high, elim
N
E
C
(
Z
H
C
t
2)
)
2
1(A
(A
O
Q
)
3
2+
initial state)
(A
to
Q
)
2
2+
(A
Q
edge)
clock
)
2
2+
(A
Q
currentL-H
D
C
t
)
2)
1
2+
2(A
(A
O
Q
6
0
rw
d
5303
ead
R
ipeline
urstP
B
C
D
L
C
t
C
Y
C
t
H
LK
C
C
t
E
H
t
E
S
t
V
D
A
H
t
W
H
t
W
S
t
V
D
A
S
t
N
E
C
LD
/
V
D
A
A
H
t
A
S
t
1
A
/W
R
C
H
t
2
A
C
S
t
(2)
S
S
E
R
D
D
A
2
E
C
,
1
E
C
4
W
B
-
1
W
B
C
t
2)
)
2
1(A
(A
O
Q
,
D
C
t
)
1
(A
Q
LZ
C
t
ipeline
P
E
O
T
U
O
A
T
A
D
ead
ipeline
R
P
ead
R
of the base address A2, etc. where address bits A0 and A1 are advancing for the four word burst in the sequence defined by the state of the LBO input.
NOTES:
1. Q (A1) represents the first output from the external address A1. Q (A2) represents the first output from the external address A2; Q (A2+1) represents the next output data in the burst sequence
and control are loaded into the SRAM.
2. CE2 timing transitions are identical but inverted to the CE1 and CE2signals. For example, when CE1 and CE2 are LOW on this waveform, CE2 is HIGH.
3. Burst ends when new address and control are loaded into the SRAM by sampling ADV/LD LOW.
4. R/W is don't care when the SRAM is bursting (ADV/LD sampled HIGH). The nature of the burst access (Read or Write) is fixed by the state of the R/W signal when new address
6.42
17
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Timing Waveform of Write Cycles
(1,2,3,4,5)
)
2
(A
D
)
around
2+3
A
(
raps
D
initialstate)
to
urstW
(B
)
2
D
2+
H
A
t
(
D
D
S
t
edge)
inates
clock
high, elim
N
E
C
)
(
current L-H
2+1
(A
D
07
drw
5303
rite
W
ipeline
urst P
B
L
C
t
C
Y
C
t
H
C
t
V
D
A
H
t
)
2
(A
D
D
H
t
)
1
D
(A
S
t
D
rite
ipeline
W
P
.
LK
C
E
H
t
E
S
t
V
D
A
S
t
N
E
C
W
H
t
W
S
t
/LD
V
D
A
A
H
t
2
A
A
S
t
1
A
/W
R
S
S
E
R
D
D
A
C
H
t
C
S
t
(2)
2
E
C
1,
E
C
B
H
t
B
S
t
4
W
- B
1
W
B
E
O
IN
TA
A
D
rite
ipeline
W
P
and control are loaded into the SRAM.
the base address A2, etc. where address bits A0 and A1 are advancing for the four word burst in the sequence defined by the state of the LBO input.
NOTES:
1. D (A1) represents the first input to the external address A1. D (A2) represents the first input to the external address A2; D (A2+1) represents the next input data in the burst sequence of
2. CE2 timing transitions are identical but inverted to the CE1 and CE2signals. For example, when CE1 and CE2 are LOW on this waveform, CE2 is HIGH.
3. Burst ends when new address and control are loaded into the SRAM by sampling ADV/LD LOW.
cycles before the actual data is presented to the SRAM.
4. R/W is don't care when the SRAM is bursting (ADV/LD sampled HIGH). The nature of the burst access (Read or Write) is fixed by the state of the R/W signal when new address
5. Individual Byte Write signals (BWx) must be valid on all write and burst-write cycles. A write cycle is initiated when R/W signal is sampled LOW. The byte write information comes in two
6.4218
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
)
5
(A
D
)
4
(A
D
(1,2,3)
)
6
(A
Q
)
7
(A
Q
08
drw
5303
,
ead
R
Timing Waveform of Combined Read and Write Cycles
9
A
8
A
7
A
6
A
,
C
D
C
t
5
A
L
C
t
C
Y
C
t
H
C
t
E
H
t
E
S
t
V
D
A
H
t
W
H
t
W
S
t
V
D
A
S
t
4
A
3
A
A
H
t
A
S
t
C
H
t
2
A
C
S
t
1
A
B
H
t
B
S
t
D
H
t
D
S
t
)
(A
D
rite
W
2
rite
W
)
3
(A
Q
LZ
C
t
ead
R
Z
H
C
t
)
1
(A
Q
D
C
t
ead
R
LK
C
)
(2
N
E
C
/LD
V
D
A
/W
R
S
S
E
R
D
D
A
2
E
C
,
1
E
C
6.42
19
4
W
B
-
1
W
B
E
O
IN
A
T
A
D
T
U
O
A
T
A
D
NOTES:
cycles before the actual data is presented to the SRAM.
1. Q (A1) represents the first output from the external address A1. D (A2) represents the input data to the SRAM corresponding to address A2.
2. CE2 timing transitions are identical but inverted to the CE1 and CE2signals. For example, when CE1 and CE2 are LOW on this waveform, CE2 is HIGH.
3. Individual Byte Write signals (BWx) must be valid on all write and burst-write cycles. A write cycle is initiated when R/W signal is sampled LOW. The byte write information comes in two
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Timing Waveform of CEN Operation
5
A
4
A
(1,2,3,4)
09
)
drw
3
(A
5303
Q
D
)
H
2
t
(A
D
D
S
t
Z
C
H
D
C
t
C
t
)
3
A
L
C
t
V
D
A
H
C
Y
C
t
H
C
t
E
H
t
E
S
t
t
W
H
t
W
S
t
V
D
A
tS
A
H
t
A
S
t
C
H
t
2
A
C
S
t
1
A
B
)
H
2
t
(A
B
B
S
t
1
(A
Q
)
1
(A
Q
D
C
t
LZ
C
t
LK
C
(2)
N
E
C
LD
/
V
D
A
R/W
S
S
E
R
D
D
A
2
E
, C
1
E
C
4
W
B
1
W
B
E
IN
O
A
T
A
D
T
U
O
A
T
A
D
NOTES:
occur. All internal registers in the SRAM will retain their previous state.
1. Q (A1) represents the first output from the external address A1. D (A2) represents the input data to the SRAM corresponding to address A2.
2. CE2 timing transitions are identical but inverted to the CE1 and CE2signals. For example, when CE1 and CE2 are LOW on this waveform, CE2 is HIGH.
cycles before the actual data is presented to the SRAM.
3. CEN when sampled high on the rising edge of clock will block that L-H transition of the clock from propogating into the SRAM. The part will behave as if the L-H clock transition did not
4. Individual Byte Write signals (BWx) must be valid on all write and burst-write cycles. A write cycle is initiated when R/W signal is sampled LOW. The byte write information comes in two
6.4220
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Timing Waveform of CS Operation
5
A
4
A
(1,2,3,4)
10
drw
5303
,
)
4
(A
Q
D
)
H
3
t
(A
D
D
S
t
Z
H
C
C
D
)
L
C
t
C
Y
C
t
LK
C
H
C
t
E
H
t
E
S
t
V
D
A
H
t
W
H
t
W
S
t
V
D
A
S
t
N
E
C
LD
/
V
D
A
R/W
3
A
A
H
t
A
S
t
C
H
t
2
A
C
S
t
1
A
S
S
E
R
D
D
A
B
H
t
B
S
t
(2)
2
E
C
1,
E
C
4
W
B
1
W
B
E
O
t
2
C
t
(A
Q
)
1
(A
Q
D
C
LZ
t
C
t
IN
A
T
A
D
T
U
O
A
T
A
D
NOTES:
occur. All internal registers in the SRAM will retain their previous state.
1. Q (A1) represents the first output from the external address A1. D (A3) represents the input data to the SRAM corresponding to address A3.
2. CE2 timing transitions are identical but inverted to the CE1 and CE2signals. For example, when CE1 and CE2 are LOW on this waveform, CE2 is HIGH.
cycles before the actual data is presented to the SRAM.
3. CEN when sampled high on the rising edge of clock will block that L-H transition of the clock from propogating into the SRAM. The part will behave as if the L-H clock transition did not
4. Individual Byte Write signals (BWx) must be valid on all write and burst-write cycles. A write cycle is initiated when R/W signal is sampled LOW. The byte write information comes in two
6.42
21
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
IDT71V65602, IDT71V65802, 256K x 36, 512K x 18, 3.3V Synchronous SRAMs with
ZBT
Feature, 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Datasheet Document History
12/31/99Created new datasheet from obsolete devices IDT71V656 and IDT71V658
03/04/00Pg.1,14,15 Removed 166MHz speed grade offering; Added 150MHz speed grade offering
04/20/00Pg. 5,6Add JTAG test pins to TQFP pin configuration; removed footnote
Add clarification note to Recommended Operating Temperature and Absolute Max Ratings tables
Pg. 7Add note to BGA Pin configuration; corrected typo in pinout
Pg. 21Insert TQFP Package Diagram Outline
05/16/00Add new package offering, 13 x 15mm 165fBGA
Pg. 23Correct error in the 119 BGA Package Diagram Outline
07/28/00Pg. 5-8Remove JTAG pins from TQFP, BG119 and BQ165 pinouts, refer to IDT71V656xx and IDT71V658xx
device errata
Pg. 7,8Correct error in pinout, B2 on BG119 and B1 on BQ165 pinout
Pg. 23Update BG119 Package Diagram Dimensions
11/04/00Pg. 15Add Izz parameter to DC Electrical Characteristics
Pg. 8Add note to pin N5 on the BQ165 pinout, reserved for JTAG TRST
12/04/02Pg. 1-26Changed datasheet from Preliminary to Final Release.
Pg. 5,6,15, Added I temp to datasheet.
16,25
12/19/02Pg. 1,2,5,6, Removed JTAG functionality for current die revision.