HIGH-SPEED 2.5V
256/128K x 36
ASYNCHRONOUS DUAL-PORT
STATIC RAM
WITH 3.3V 0R 2.5V INTERFACE
Features
◆
◆
◆
◆
70T651/9S
◆
◆
◆
◆
◆
True Dual-Port memory cells which allow simultaneous
access of the same memory location
High-speed access
– Commercial: 10/12/15ns (max.)
– Industrial: 10/12ns (max.)
RapidWrite Mode simplifies high-speed consecutive write
cycles
Dual chip enables allow for depth expansion without
external logic
IDT70T651/9 easily expands data bus width to 72 bits or
more using the Master/Slave select when cascading more
than one device
M/S = V
IH
for
BUSY
output flag on Master,
M/S = V
IL
for
BUSY
input on Slave
Busy and Interrupt Flags
BE
3L
BE
2L
BE
1L
BE
0L
◆
◆
◆
◆
◆
◆
◆
◆
◆
On-chip port arbitration logic
Full on-chip hardware support of semaphore signaling
between ports
Fully asynchronous operation from either port
Separate byte controls for multiplexed bus and bus
matching compatibility
Sleep Mode Inputs on both ports
Supports JTAG features compliant to IEEE 1149.1
Single 2.5V (±100mV) power supply for core
LVTTL-compatible, selectable 3.3V (±150mV)/2.5V (±100mV)
power supply for I/Os and control signals on each port
Available in a 256-ball Ball Grid Array and 208-ball fine pitch
Ball Grid Array
Industrial temperature range (–40°C to +85°C) is available
for selected speeds
Green parts available, see ordering information
Functional Block Diagram
BE
3R
BE
2R
BE
1R
BE
0R
R/
W
L
CE
0L
CE
1L
BB
EE
01
LL
BB
EE
23
LL
BBBB
EEEE
3210
R RRR
R/
W
R
CE
0R
CE
1R
OE
L
Dout0-8_L
Dout0-8_R
Dout9-17_L
Dout9-17_R
Dout18-26_L Dout18-26_R
Dout27-35_L Dout27-35_R
OE
R
256/128K x 36
MEMORY
ARRAY
I/O
0L-
I/O
35L
Di n_L
Di n_R
I/O
0R -
I/O
35R
A
17L(1)
A
0L
Address
Decoder
ADDR_L
ADDR_R
Address
Decoder
A
17R(1)
A
0R
CE
0L
CE
1L
OE
L
R/W
L
BUSY
L(2,3)
SEM
L
INT
L(3)
(4)
ARBITRATION
INTERRUPT
SEMAPHORE
LOGIC
OE
R
R/W
R
CE
0R
CE
1R
TDI
TDO
JTAG
TCK
TMS
TRST
M/S
BUSY
R(2,3)
SEM
R
INT
R(3)
(4)
ZZ
L
ZZ
R
CONTROL
NOTES:
LOGIC
1. Address A
17x
is a NC for IDT70T659.
2.
BUSY
is an input as a Slave (M/S=V
IL
) and an output when it is a Master (M/S=V
IH
).
3.
BUSY
and
INT
are non-tri-state totem-pole outputs (push-pull).
4. The sleep mode pin shuts off all dynamic inputs, except JTAG inputs, when asserted. OPTx,
INTx,
M/S and the sleep
mode pins themselves (ZZx) are not affected during sleep mode.
ZZ
4869 drw 01
MAY 2019
DSC-5632/10
1
©2019 Integrated Device Technology, Inc.
70T651/9S
High-Speed 2.5V 256/128K x 36 Asynchronous Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Description
The IDT70T651/9 is a high-speed 256/128K x 36 Asynchronous
Dual-Port Static RAM. The IDT70T651/9 is designed to be used as a
stand-alone 9216/4608K-bit Dual-Port RAM or as a combination MAS-
TER/SLAVE Dual-Port RAM for 72-bit-or-more word system. Using the
IDT MASTER/SLAVE Dual-Port RAM approach in 72-bit or wider
memory system applications results in full-speed, error-free operation
without the need for additional discrete logic.
This device provides two independent ports with separate control,
address, and I/O pins that permit independent, asynchronous access for
reads or writes to any location in memory. An automatic power down
feature controlled by the chip enables (either
CE
0
or CE
1
) permit the
on-chip circuitry of each port to enter a very low standby power mode.
The IDT70T651/9 has a RapidWrite Mode which allows the designer
to perform back-to-back write operations without pulsing the R/W input
each cycle. This is especially significant at the 10ns cycle time of the
IDT70T651/9, easing design considerations at these high performance
levels.
The 70T651/9 can support an operating voltage of either 3.3V or 2.5V
on one or both ports, controlled by the OPT pins. The power supply for
the core of the device (V
DD
) is at 2.5V.
2
70T651/9S
High-Speed 2.5V 256/128K x 36 Asynchronous Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Pin Configuration
(1,2,3)
70T651/9
BC256
(5,6)
256-Pin BGA
Top View
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
NC
B1
TDI
B2
NC
B3
A
17L(4)
B4
A
14L
B5
A
11L
B6
A
8L
B7
BE
2L
B8
CE
1L
B9
OE
L
B10
INT
L
B11
A
5L
B12
A
2L
B13
A
0L
B14
NC
B15
NC
B16
I/O
18L
C1
NC
C2
TDO
C3
NC
C4
A
15L
C5
A
12L
C6
A
9L
C7
BE
3L
C8
CE
0L
R/W
L
C9
C10
NC
C11
A
4L
C12
A
1L
C13
NC
C14
I/O
17L
C15
NC
C16
I/O
18R
I/O
19L
D1
D2
V
SS
D3
A
16L
D4
A
13L
D5
A
10L
D6
A
7L
D7
BE
1L
D8
BE
0L
SEM
L
BUSY
L
D9
D10
D11
A
6L
D12
A
3L
D13
OPT
L
I/O
17R
I/O
16L
D14
D15
D16
I/O
20R
I/O
19R
I/O
20L
E1
E2
E3
V
DD
E4
V
DDQL
V
DDQL
V
DDQR
V
DDQR
V
DDQL
V
DDQL
V
DDQR
V
DDQR
V
DD
I/O
15R
I/O
15L
I/O
16R
E5
E6
E7
E8
E9
E10
E11
E12
E13
E14
E15
E16
I/O
21R
I/O
21L
I/O
22L
V
DDQL
F1
F2
F3
F4
V
DD
F5
V
DD
F6
V
SS
F7
V
SS
F8
V
SS
F9
V
SS
F10
V
DD
F11
V
DD
V
DDQR
I/O
13L
I/O
14L
I/O
14R
F12
F13
F14
F15
F16
I/O
23L
I/O
22R
I/O
23R
V
DDQL
V
DD
G1
G2
G3
G4
G5
NC
G6
V
SS
G7
V
SS
G8
V
SS
G9
V
SS
G10
V
SS
G11
V
DD
V
DDQR
G12
G13
I/O
12R
I/O
13R
I/O
12L
G14
G15
G16
I/O
24R
I/O
24L
I/O
25L
V
DDQR
H1
H2
H3
H4
V
SS
H5
V
SS
H6
V
SS
H7
V
SS
H8
V
SS
H9
V
SS
H10
V
SS
H11
V
SS
H12
V
DDQL
I/O
10L
I/O
11L
I/O
11R
H13
H14
H15
H16
I/O
26L
I/O
25R
I/O
26R
V
DDQR
V
SS
J1
J2
J3
J4
J5
V
SS
J6
V
SS
J7
V
SS
J8
V
SS
J9
V
SS
J10
V
SS
J11
V
SS
J12
V
DDQL
I/O
9R
J13
J14
IO
9L
I/O
10R
J15
J16
I/O
27L
I/O
28R
I/O
27R
V
DDQL
K1
K2
K3
K4
ZZ
R
K5
V
SS
K6
V
SS
K7
V
SS
K8
V
SS
K9
V
SS
K10
V
SS
K11
ZZ
L
V
DDQR
I/O
8R
I/O
7R
K12
K13
K14
K15
I/O
8L
K16
I/O
29R
I/O
29L
I/O
28L
V
DDQL
V
SS
L1
L2
L3
L4
L5
V
SS
L6
V
SS
L7
V
SS
L8
V
SS
L9
V
SS
L10
V
SS
L11
V
SS
L12
V
DDQR
I/O
6R
I/O
6L
I/O
7L
L13
L14
L15
L16
I/O
30L
I/O
31R
I/O
30R
V
DDQR
V
DD
M1
M2
M3
M4
M5
NC
M6
V
SS
M7
V
SS
M8
V
SS
M9
V
SS
M10
V
SS
M11
V
DD
M12
V
DDQL
I/O
5L
M13
M14
I/O
4R
I/O
5R
M15
M16
I/O
32R
I/O
32L
I/O
31L
V
DDQR
N1
N2
N3
N4
V
DD
N5
V
DD
N6
V
SS
N7
V
SS
N8
V
SS
N9
V
SS
N10
V
DD
N11
V
DD
N12
V
DDQL
I/O
3R
N13
N14
I/O
3L
I/O
4L
N15
N16
I/O
33L
I/O
34R
I/O
33R
P1
P2
P3
V
DD
P4
V
DDQR
V
DDQR
V
DDQL
V
DDQL
V
DDQR
V
DDQR
V
DDQL
V
DDQL
P5
P6
P7
P8
P9
P10
P11
P12
V
DD
P13
I/O
2L
P14
I/O
1R
I/O
2R
P15
P16
I/O
35R
I/O
34L
TMS
R1
R2
R3
A
16R
R4
A
13R
R5
A
10R
R6
A
7R
R7
BE
1R
BE
0R
SEM
R
BUSY
R
R8
R9
R10
R11
A
6R
R12
A
3R
R13
I/O
0L
I/O
0R
R14
R15
I/O
1L
R16
I/O
35L
T1
NC
T2
TRST
T3
NC
T4
A
15R
T5
A
12R
T6
A
9R
T7
BE
3R
CE
0R
R/W
R
T8
T9
T10
M/S
T11
A
4R
T12
A
1R
T13
OPT
R
T14
NC
T15
NC
T16
NC
TCK
NC
A
17R(4)
A
14R
A
11R
A
8R
BE
2R
CE
1R
OE
R
INT
R
A
5R
A
2R
A
0R
NC
NC
5632 drw 02f
NOTES:
1. All V
DD
pins must be connected to 2.5V power supply.
2. All V
DDQ
pins must be connected to appropriate power supply: 3.3V if OPT pin for that port is set to V
DD
(2.5V), and 2.5V if OPT pin for that port is
set to V
SS
(0V).
3. All V
SS
pins must be connected to ground supply.
4. A
17X
is a NC for IDT70T659.
5. Package body is approximately 17mm x 17mm x 1.4mm, with 1.0mm ball-pitch.
6. This package code is used to reference the package diagram.
3
70T651/9S
High-Speed 2.5V 256/128K x 36 Asynchronous Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Pin Configurations
(1,2,3)
(con't.)
208
207
206
205
204
203
202
201
200
199
198
197
196
195
194
193
192
191
190
189
188
187
186
185
184
183
182
181
180
179
178
177
176
175
174
173
172
171
170
169
168
167
166
165
164
163
162
161
160
159
158
157
V
SS
V
DDQR
I/O
18R
I/O
18L
V
SS
V
DD
TDI
TDO
NC
NC
A
17L(4)
A
16L
A
15L
A
14L
A
13L
A
12L
A
11L
A
10L
A
9L
A
8L
A
7L
BE
3L
BE
2L
BE
1L
BE
0L
CE
1L
CE
0L
V
DD
V
DD
V
SS
V
SS
SEM
L
OE
L
R/W
L
BUSY
L
INT
L
NC
A
6L
A
5L
A
4L
A
3L
A
2L
A
1L
A
0L
V
DD
V
DD
V
SS
OPT
L
I/O
17L
I/O
17R
V
DDQR
V
SS
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
I/O
19L
I/O
19R
I/O
20L
I/O
20R
V
DDQL
V
SS
I/O
21L
I/O
21R
I/O
22L
I/O
22R
V
DDQR
V
SS
I/O
23L
I/O
23R
I/O
24L
I/O
24R
V
DDQL
V
SS
I/O
25L
I/O
25R
I/O
26L
I/O
26R
V
DDQR
ZZ
R
V
DD
V
DD
V
SS
V
SS
V
DDQL
V
SS
I/O
27R
I/O
27L
I/O
28R
I/O
28L
V
DDQR
V
SS
I/O
29R
I/O
29L
I/O
30R
I/O
30L
V
DDQL
V
SS
I/O
31R
I/O
31L
I/O
32R
I/O
32L
V
DDQR
V
SS
I/O
33R
I/O
33L
I/O
34R
I/O
34L
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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
70T651/9DR
DR-208
(5,6,7)
208-Pin
PQFP
Top View
(8)
156
155
154
153
152
151
150
149
148
147
146
145
144
143
142
141
140
139
138
137
136
135
134
133
132
131
130
129
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109
108
107
106
105
I/O
16L
I/O
16R
I/O
15L
I/O
15R
V
SS
V
DDQL
I/O
14L
I/O
14R
I/O
13L
I/O
13R
V
SS
V
DDQR
I/O
12L
I/O
12R
I/O
11L
I/O
11R
V
SS
V
DDQL
I/O
10L
I/O
10R
I/O
9L
I/O
9R
V
SS
V
DDQR
V
DD
V
DD
V
SS
V
SS
ZZ
L
V
DDQL
I/O
8R
I/O
8L
I/O
7R
I/O
7L
V
SS
V
DDQR
I/O
6R
I/O
6L
I/O
5R
I/O
5L
V
SS
V
DDQL
I/O
4R
I/O
4L
I/O
3R
I/O
3L
V
SS
V
DDQR
I/O
2R
I/O
2L
I/O
1R
I/O
1L
5632 drw 02d
NOTES:
1. All V
DD
pins must be connected to 2.5V power supply.
2.
All V
DDQ
pins must be connected to appropriate power supply: 3.3V if OPT pin for that port is set to V
DD
(2.5V) and 2.5V if OPT pin for that port is
set to V
SS
(0V).
3. All V
SS
pins must be connected to ground.
4. A
17X
is a NC for IDT70T659.
5. Package body is approximately 28mm x 28mm x 3.5mm.
6. This package code is used to reference the package diagram.
7. 10ns Industrial speed grade is not available in the DR-208 package.
8. This text does not indicate orientation of the actual part-marking.
V
SS
V
DDQL
I/O
35R
I/O
35L
V
DD
TMS
TCK
TRST
NC
NC
A
17R(4)
A
16R
A
15R
A
14R
A
13R
A
12R
A
11R
A
10R
A
9R
A
8R
A
7R
BE
3R
BE
2R
BE
1R
BE
0R
CE
1R
CE
0R
V
DD
V
DD
V
SS
V
SS
SEM
R
OE
R
R/W
R
BUSY
R
INT
R
M/S
A
6R
A
5R
A
4R
A
3R
A
2R
A
1R
A
0R
V
DD
V
SS
V
SS
OPT
R
I/O
0L
I/O
0R
V
DDQL
V
SS
4
70T651/9S
High-Speed 2.5V 256/128K x 36 Asynchronous Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Pin Configurations
(1,2,3)
(con't.)
1
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
I/O
19L
2
I/O
18L
3
V
SS
4
TDO
5
NC
6
A
16L
7
A
12L
8
A
8L
9
BE
1L
10 11
V
DD
SEML
12
INT
L
13 14
A4
L
A
0L
15
OPT
L
16 17
I/O
17L
V
SS
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
I/O
20R
V
SS
I/O
18R
TDI
A
17L(4)
A
13L
A
9L
BE
2L
BE
3L
CE
0L
V
SS
BUSY
L
A5
L
A
1L
V
SS
V
DDQR
I/O16L I/O
15R
V
DDQL
I/O
19R
V
DDQR
V
DD
NC
A
14L
A
10L
CE
1L
V
SS
R/W
L
A6
L
A
2L
V
DD
I/O
16R
I/O
15L
V
SS
I/O
22L
V
SS
I/O
21L
I/O
20L
A
15L
A
11L
A
7L
BE
0L
V
DD
OE
L
NC
A
3
L
V
DD
I/O
17R
V
DDQL
I/O
14L
I/O
14R
I/O
23L
I/O
22R
V
DDQR
I/O
21R
I/O
12L
I/O
13R
V
SS
I/O
13L
V
DDQL
I/O
23R
I/O
24L
V
SS
V
SS
I/O
12R
I/O
11L
V
DDQR
I/O
26L
V
SS
I/O
25L
I/O
24R
V
DD
I/O
26R
V
DDQR
I/O
25R
70T651/9
BF208
(5,6)
BFG208
(5,6)
208-Ball
fpBGA
Top View
(7)
I/O
9L
V
DDQL
I/O
10L
I/O
11R
V
DD
I/O
9R
V
SS
I/O
10R
V
DDQL
V
DD
V
SS
ZZ
R
ZZ
L
V
DD
V
SS
V
DDQR
I/O
28R
V
SS
I/O
27R
V
SS
I/O
7R
V
DDQL
I/O8R
V
SS
I/O
29R
I/O
28L
V
DDQR
I/O
27L
I/O
6R
I/O
7L
V
SS
I/O
8L
V
DDQL
I/O
29L
I/O
30R
V
SS
V
SS
I/O
6L
I/O
5R
V
DDQR
I/O
31L
V
SS
I/O
31R
I/O
30L
I/O
3R
V
DDQL
I/O
4R
I/O
5L
I/O
32R
I/O
32L
V
DDQR
I/O
35R
TRST
A
16R
A
12R
A
8R
BE
1R
V
DD
SEM
R
INT
R
A
4R
I/O
2L
I/O
3L
V
SS
I/O
4L
V
SS
I/O
33L
I/O
34R
TCK
A
17R(4)
A
13R
A
9R
BE
2R
BE
3R
CE
0R
CE
1R
V
SS
BUSY
R
A
5R
A
1R
V
SS
V
DDQL
I/O
1R
V
DDQR
I/O
33R
I/O
34L
V
DDQL
TMS
NC
A
14R
A
10R
V
SS
R/W
R
A
6R
A
2R
V
SS
I/O
0R
V
SS
I/O
2R
V
SS
I/O
35L
V
DD
NC
A
15R
A
11R
A
7R
BE
0R
V
DD
OE
R
M/S
A
3R
A
0R
V
DD
OPT
R
I/O
0L
I/O
1L
5632 drw 02e
NOTES:
1. All V
DD
pins must be connected to 2.5V power supply.
2.
All V
DDQ
pins must be connected to appropriate power supply: 3.3V if OPT pin for that port is set to V
DD
(2.5V) and 2.5V if OPT pin for that port is
set to V
SS
(0V).
3. All V
SS
pins must be connected to ground.
4. A
17X
is a NC for IDT70T659.
5. Package body is approximately 15mm x 15mm x 1.4mm with 0.8mm ball pitch.
6. This package code is used to reference the package diagram.
7. This text does not indicate orientation of the actual part-marking.
5
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