6.42
6
IDT71V2556, IDT71V2558, 128K x 36, 256K x 18, 3.3V Synchronous ZBT™ SRAMs
with 2.5V I/O, Burst Counter, and Pipelined Outputs Commercial and Industrial Temperature Ranges
Absolute Maximum Ratings
(1)
Pin Configuration 256K x 18
100 TQFP Capacitance
(1)
(TA = +25° C, f = 1.0MHz)
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. Pins 83 and 84 are reserved for future 8M and 16M respectively.
3. DNU = Do not use; Pins 38, 39, 42, and 43 are reserved for respective
JTAG pins: TMS, TDI, TDO, and TCK on future revisions. Within this
current version, these pins are not connected.
4. Pin 64 does not have to be connected directly to VSS as long as the input
voltage is ≤ VIL. On future revisions Pin 64 will be used for ZZ (sleep
mode).
Top View
TQFP
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may
cause permanent damage to the device. This is a stress rating only and functional
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. TA is the "instant on" case temperature.
NOTE:
1. This parameter is guaranteed by device characterization, but not production tested.
Symbol Rating
Commercial &
Industrial Values
Unit
V
TE RM
(2)
Terminal Voltage with
Respect to GND
-0.5 to +4.6 V
V
TE RM
(3,6)
Terminal Voltage with
Respect to GND
-0.5 to V
DD
V
V
TE RM
(4,6)
Terminal Voltage with
Respect to GND
-0.5 to V
DD
+0.5 V
V
TE RM
(5,6)
Terminal Voltage with
Respect to GND
-0.5 to V
DDQ
+0.5 V
T
A
Commerical
Operating Temperature
-0 to +70
C
Industrial
Operating Temperature
-40 to +85
C
T
BIAS
Temperature
Under Bias
-55 to +125
C
T
STG
Storage
Temperature
-55 to +125
C
P
T
Power Dissipation 2.0 W
I
OUT
DC Output Current 50 mA
4875 tbl 06
100 99 98 97 96 95 94 93 92 91 90 87 86 85 84 83 82 8189 88
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
A
6
A
7
C
E
1
C
E
2
N
C
N
C
B
W
2
B
W
1
C
E
2
V
D
D
V
S
S
C
LK
R
/
W
C
E
N
O
E
A
D
V
/
LD
N
C
(2)
N
C
(2)
A
8
A
9
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
D
N
U
(3)
D
N
U
(3)
D
N
U
(3)
D
N
U
(3)
LB
O
A
15
A
14
A
13
A
12
A
11
V
D
D
V
S
S
A
0
A
1
A
2
A
3
A
4
A
5
NC
NC
V
DDQ
V
SS
NC
I/O
P2
I/O
15
I/O
14
V
SS
V
DDQ
I/O
13
I/O
12
V
SS
V
DD
I/O
11
I/O
10
V
DDQ
V
SS
I/O
9
I/O
8
NC
NC
V
SS
V
DDQ
NC
NC
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
NC
V
DDQ
V
SS
NC
I/O
P1
I/O
7
I/O
6
V
SS
V
DDQ
I/O
5
I/O
4
V
SS
V
DD
I/O
3
I/O
2
V
DDQ
V
SS
I/O
1
I/O
0
NC
NC
V
SS
V
DDQ
NC
NC
4875 drw 02a
V
DD
(1)
NC
NC
V
DD
(1)
NC
A
16
A
17
NC
V
DD
(1)
A
10
V
SS
(4)
,
Symbol Parameter
Conditions Max. Unit
C
IN
Input Capacitance V
IN
= 3dV 5 pF
C
I/O
I/O Capacitance V
OUT
= 3dV 7 pF
4875 tbl 07
119 BGA Capacitance
(1)
(TA = +25° C, f = 1.0MHz)
Symbol Parameter
Conditions Max. Unit
C
IN
Input Capacitance V
IN
= 3dV 7 pF
C
I/O
I/O Capacitance V
OUT
= 3dV 7 pF
4875 tbl 07a
Symbol Parameter
Conditions Max. Unit
C
IN
Input Capacitance V
IN
= 3dV TBD pF
C
I/O
I/O Capacitance V
OUT
= 3dV TBD pF
4875 tbl 07b
165 fBGA Capacitance
(1)
(TA = +25° C, f = 1.0MHz)
