HIGH-SPEED 3.3V 32K x 36
ASYNCHRONOUS DUAL-PORT
STATIC RAM
Features
True Dual-Port memory cells which allow simultaneous
access of the same memory location
High-speed access
– Commercial: 10/12/15ns (max.)
– Industrial: 12/15ns (max.)
Dual chip enables allow for depth expansion without
external logic
IDT70V657 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
On-chip port arbitration logic
x
x
x
PRELIMINARY
IDT70V657S
x
x
x
x
x
x
x
x
x
x
x
x
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
Supports JTAG features compliant to IEEE 1149.1
LVTTL-compatible, single 3.3V (±150mV) 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 208-pin Plastic Quad Flatpack, 208-ball fine
pitch Ball Grid Array and 256-ball Ball Grid Array
Industrial temperature range (–40°C to +85°C) is available
for selected speeds
Functional Block Diagram
BE
3L
BE
2L
BE
3 R
BE
2 R
BE
1R
BE
0R
R/
W
R
B
E
0
L
B
E
1
L
B
E
2
L
B
E
3
L
B
E
3
R
BB
EE
2 1
RR
B
E
0
R
BE
1 L
BE
0L
R/
W
L
CE
0 L
CE1 L
CE
0 R
CE1R
OE
L
OE
R
Dout0-8_L
Dout9-17_L
Dout18-26_L
Dout27-35_L
Dout0-8_R
Dout9-17_R
Dout18-26_R
Dout27-35_R
32K x 36
MEMORY
ARRAY
I/O - I/O
0L
35L
Di n_L
Di n_R
I/O - I/O
0R
35R
A14 L
A0 L
Address
Decoder
ADDR_L
ADDR_R
Address
Decoder
A
14R
A
0R
CE
0 L
CE1L
OE
L
R/WL
ARBITRATION
INTERRUPT
SEMAPHORE
LOGIC
CE
0 R
CE1R
OE
R
R/WR
BUSY
R
BUSY
L
SEM
L
INT
L
M/S
SEM
R
INT
R
TDI
TDO
JTAG
TMS
TCK
TRST
5615 drw 01
NOTES:
1.
BUSY
is an input as a Slave (M/S=V
IL
) and an output when it is a Master (M/S=V
IH
).
2.
BUSY
and
INT
are non-tri-state totem-pole outputs (push-pull).
JUNE 2001
DSC-5615/3
1
©2001 Integrated Device Technology, Inc.
IDT70V657S
High-Speed 3.3V 32K x 36 Asynchronous Dual-Port Static RAM
Preliminary
Industrial and Commercial Temperature Ranges
Description
The IDT70V657 is a high-speed 32K x 36 Asynchronous Dual-Port
Static RAM. The IDT70V657 is designed to be used as a stand-alone
1152K-bit Dual-Port RAM or as a combination MASTER/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 70V657 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
) remains at 3.3V.
Pin Configurations
(1,2,3,4)
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
NC
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
NC
A
13L
A
9L
BE
2L
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
BE
3L
CE
1L
V
SS
R /
W
L
A 6
L
A
2L
V
DD
I/O
16R
I/O
15L
V
SS
I/O
22L
V
SS
I/O
21L
I/O
20L
NC
A
11 L
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
I/O
9 L
V
DDQL
I/O
10L
I/O
11R
V
DD
I/O
26R
V
DDQR
I/O
25R
70V657BF
BF-208
(5)
208-Ball fpBGA
Top View
(6)
V
DD
I/O
9R
V
SS
I/O
10R
V
DDQL
V
DD
V
SS
V
SS
V
SS
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
8 L
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
NC
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
NC
A
13R
A
9R
BE
2R
CE
0
R
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
BE
3R
CE
1R
V
SS
R/W
R
A
6R
A
2R
V
SS
I/O
0R
V
SS
I/O
2 R
V
SS
I/O
35L
V
DD
NC
NC
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
1 L
5615 tbl 02b
NOTES:
1. All V
DD
pins must be connected to 3.3V 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
IH
(3.3V), and 2.5V if OPT pin for that port is
set to V
IL
(0V)
3. All V
SS
pins must be connected to ground.
4. Package body is approximately 15mm x 15mm x 1.4mm with 0.8mm ball pitch.
5. This package code is used to reference the package diagram.
6. This text does not indicate orientation of the actual part-marking.
2
IDT70V657S
High-Speed 3.3V 32K x 36 Asynchronous Dual-Port Static RAM
Preliminary
Industrial and Commercial Temperature Ranges
Pin Configurations
(1,2,3,4)
(con't.)
V
SS
V
DDQR
I/O
18R
I/O
18L
V
SS
V
DD
TDI
TDO
NC
NC
NC
NC
NC
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
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
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
V
SS
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
70V657DR
DR-208
(5)
208-Pin PQFP
Top View
(6)
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
V
SS
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
5615 drw 02a
NOTES:
1. All V
DD
pins must be connected to 3.3V 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
IH
(3.3V), and 2.5V if OPT pin for that port is
set to V
IL
(0V)
3. All V
SS
pins must be connected to ground.
4. Package body is approximately 28mm x 28mm x 3.5mm.
5. This package code is used to reference the package diagram.
6. 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
NC
NC
NC
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
3
IDT70V657S
High-Speed 3.3V 32K x 36 Asynchronous Dual-Port Static RAM
Preliminary
Industrial and Commercial Temperature Ranges
Pin Configuration
(1,2,3,4)
(con't.)
70V657BC
BC-256
(5)
256-Pin BGA
Top View
(6)
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
NC
B1
TDI
B2
NC
B3
NC
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
NC
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
NC
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
G1
G2
G3
G4
V
DD
G5
V
SS
G6
V
SS
G7
V
SS
G8
V
SS
G9
V
SS
G10
V
SS
G11
V
DD
V
DDQR
I/O
12R
I/O
13R
I/O
12L
G12
G13
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
V
SS
K5
V
SS
K6
V
SS
K7
V
SS
K8
V
SS
K9
V
SS
K10
V
SS
K11
V
SS
K12
V
DDQR
I/O
8R
I/O
7R
K13
K14
K15
I/O
8L
K16
I/O
29R
I/O
29L
I/O
28L
V
DDQL
L1
L2
L3
L4
V
SS
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
L13
L14
I/O
6L
L15
I/O
7L
L16
I/O
30L
I/O
31R
I/O
30R
V
DDQR
M1
M2
M3
M4
V
DD
M5
V
SS
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
N15
I/O
4L
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
NC
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
NC
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
NC
A
14R
A
11R
A
8R
BE
2R
CE
1R
OE
R
INT
R
A
5R
A
2R
A
0R
NC
NC
NOTES:
1. All V
DD
pins must be connected to 3.3V 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
IH
(3.3V), and 2.5V if OPT pin for that port is
set to V
IL
(0V).
3. All V
SS
pins must be connected to ground supply.
4. Package body is approximately 17mm x 17mm x 1.4mm, with 1.0mm ball-pitch.
5. This package code is used to reference the package diagram.
6. This text does not indicate orientation of the actual part-marking.
5615 drw 02c
,
4
IDT70V657S
High-Speed 3.3V 32K x 36 Asynchronous Dual-Port Static RAM
Preliminary
Industrial and Commercial Temperature Ranges
Pin Names
Left Port
CE
0L
,
CE
1L
R/W
L
OE
L
A
0L
- A
14L
I/O
0L
- I/O
35L
SEM
L
INT
L
BUSY
L
BE
0L
-
BE
3L
V
DDQL
OPT
L
M/S
V
DD
V
SS
TDI
TDO
TCK
TMS
TRST
Right Port
CE
0R
,
CE
1R
R/W
R
OE
R
A
0R
- A
14R
I/O
0R
- I/O
35R
SEM
R
INT
R
BUSY
R
BE
0R
-
BE
3R
V
DDQR
OPT
R
Chip Enables
Read/Write Enable
Output Enable
Address
Data Input/Output
Semaphore Enable
Interrupt Flag
Busy Flag
Byte Enables (9-bit bytes)
Power (I/O Bus) (3.3V or 2.5V)
(1)
Option for selecting V
DDQX
(1,2)
Master or Slave Select
Power (3.3V)
(1)
Ground (0V)
Test Data Input
Test Data Output
Test Logic Clock (10MHz)
Test Mode Select
Reset (Initialize TAP Controller)
5615 tbl 01
Names
NOTES:
1. V
DD
, OPT
X
, and V
DDQX
must be set to appropriate operating levels prior to
applying inputs on I/O
X
.
2. OPT
X
selects the operating voltage levels for the I/Os and controls on that port.
If OPT
X
is set to V
IH
(3.3V), then that port's I/Os and controls will operate at 3.3V
levels and V
DDQX
must be supplied at 3.3V. If OPT
X
is set to V
IL
(0V), then that
port's I/Os and controls will operate at 2.5V levels and V
DDQX
must be supplied
at 2.5V. The OPT pins are independent of one another—both ports can operate
at 3.3V levels, both can operate at 2.5V levels, or either can operate at 3.3V
with the other at 2.5V.
5
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