HIGH-SPEED 1.8V
8/4K x 18 DUAL-PORT
8/4K x 16 DUAL-PORT
STATIC RAM
Features
◆
◆
ADVANCED
IDT70P35/34L
IDT70P25/24L
◆
◆
◆
True Dual-Ported memory cells which allow simultaneous
reads of the same memory location
High-speed access
IDT70P35/34L (IDT70P25/24L)
– Commercial: 20/25ns (max.)
– Industrial: 25ns (max.)
Low-power operation
IDT70P35/34L (IDT70P25/24L)
Active: 30.6mW (typ.)
Standby: 5.4mW (typ.)
Separate upper-byte and lower-byte control for multiplexed
bus compatibility
IDT70P35/34L (IDT70P25/24L) easily expands data bus
width to 36 bits (32 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 Flag
On-chip port arbitration logic
Full on-chip hardware support of semaphore signaling
between ports
Fully asynchronous operation from either port
LVTTL-compatible, single 1.8V (±100mV) power supply
Available in a 100-pin Thin Quad Flatpack (TQFP) package,
100-pin 0.8mm pitch Ball Grid Array (fpBGA), and 100-pin
0.5mm pitch BGA (fpBGA)
Industrial temperature range (-40°C to +85°C) is available
for selected speeds
Functional Block Diagram
R/W
L
UB
L
R/W
R
UB
R
LB
CE
L
L
OE
L
LB
R
CE
R
OE
R
,
I/O
9L
-I/O
17L
(5)
I/O
0L
-I/O
8L
(4)
BUSY
L
A
12L
(1)
A
0L
(2,3)
I/O
9R
-I/O
17R
(5)
I/O
Control
I/O
Control
I/O
0R
-I/O
8R
(4)
BUSY
R
(2,3)
Address
Decoder
13
MEMORY
ARRAY
13
Address
Decoder
A
12R
(1)
A
0R
CE
L
OE
L
R/W
L
SEM
L
(3)
INT
L
NOTES:
1. A
12
is a NC for IDT70P34 and IDT70P24.
2. (MASTER):
BUSY
is output; (SLAVE):
BUSY
is input.
3.
BUSY
outputs and
INT
outputs are non-tri-stated push-pull.
4. I/O
0
x - I/O
7
x for IDT70P25/24.
5. I/O
8
x - I/O
15
x for IDT70P25/24.
ARBITRATION
INTERRUPT
SEMAPHORE
LOGIC
CE
R
OE
R
R/W
R
SEM
R
INT
R
(3)
5683 drw 01
M/S
FEBRUARY 2004
1
DSC-5683/2
©2004 Integrated Device Technology, Inc.
IDT70P35/34L(IDT70P25/24L)
High-Speed 1.8V 8/4K x 18 (8/4K x 16) Dual-Port Static RAM
ADVANCED
Industrial and Commercial Temperature Ranges
The IDT70P35/34L (IDT70P25/24L) is a high-speed 8/4K x 18
(8/4K x 16) Dual-Port Static RAM. The IDT70P35/34L (IDT70P25/24L)
is designed to be used as a stand-alone Dual-Port RAM or as a
combination MASTER/SLAVE Dual-Port RAM for 36-bit (32-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
Description
reads or writes to any location in memory. An automatic power down
feature controlled by
CE
permits the on-chip circuitry of each port to enter
a very low standby power mode.
Fabricated using IDT’s CMOS high-performance technology, these
devices typically operate on only 30.6mW of power.
The IDT70P35/34L (IDT70P25/24L) is packaged in a plastic 100-pin
Thin Quad Flatpack, a 100-pin fine pitch Ball Grid Array, and a 100-pin
0.5mm pitch
fpBGA.
IDT70P35/34 Pin Configurations
(1,2,3,4)
12/17/03
Index
N/C
N/C
I/O
8L
I/O
17L
I/O
11L
I/O
12L
I/O
13L
I/O
14L
Vss
I/O
15L
I/O
16L
V
DD
Vss
I/O
0R
I/O
1R
I/O
2R
V
DD
I/O
3R
I/O
4R
I/O
5R
I/O
6R
I/O
8R
I/O
17R
N/C
N/C
100 99 98 9796 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
1
75
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
74
73
72
71
70
69
68
67
I/O
10L
I/O
9L
I/O
7L
I/O
6L
I/O
5L
I/O
4L
I/O
3L
I/O
2L
Vss
I/O
1L
I/O
0L
OE
L
V
DD
R/W
L
SEM
L
CE
L
UB
L
LB
L
A
12L
(1)
A
11L
A
10L
A
9L
A
8L
A
7L
A
6L
IDT70P35/34PF
PN100-1
(5)
100-Pin TQFP
Top View
(6)
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
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
N/C
N/C
N/C
N/C
A
5L
A
4L
A
3L
A
2L
A
1L
A
0L
INT
L
BUSY
L
Vss
M/S
BUSY
R
INT
R
A
0R
A
1R
A
2R
A
3R
A
4R
N/C
N/C
N/C
N/C
,
5683 drw 02
NOTES:
1. A
12
is a NC for IDT70P34.
2. All V
DD
pins must be connected to power supply.
3. All V
SS
pins must be connected to ground.
4. PN100-1 package body is approximately 14mm x 14mm x 1.4mm.
5. This package code is used to reference the package diagram.
6. This text does not indicate orientation of the actual part marking.
I/O
7R
I/O
9R
I/O
10R
I/O
11R
I/O
12R
I/O
13R
I/O
14R
I/O
15R
Vss
I/O
16R
OE
R
R/W
R
Vss
SEM
R
CE
R
UB
R
LB
R
A
12R
(1)
A
11R
A
10R
A
9R
A
8R
A
7R
A
6R
A
5R
6.42
2
IDT70P35/34L (IDT70T25/24L)
High-Speed 1.8V 8/4K x 18 (8/4K x 16) Dual-Port Static RAM
ADVANCED
Industrial and Commercial Temperature Ranges
IDT70P35/34 Pin Configurations(cont'd)
(1,2,3,4)
IDT70P35/34BF
BF100
(5)
100-Pin fpBGA
Top View
(6)
12/16/03
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A
6R
B1
A
9R
A
12R(1)
CE
R
B2
B3
B4
V
SS
B5
V
SS
B6
V
SS
B7
I/O
13R
I/O
10R
I/O
7R
B8
B9
B10
NC
C1
NC
C2
A
8R
C3
A
10R
SEM
R
R/W
R
C4
C5
C6
OE
R
I/O
12R
I/O
9R
I/O
6R
C7
C8
C9
C10
A
3R
D1
A
4R
D2
A
5R
D3
A
7R
D4
UB
R
D5
I/O
16R
I/O
15R
I/O
11R
I/O
8R
I/O
3R
D6
D7
D8
D9
D10
A
1R
E1
INT
R
E2
A
2R
E3
NC
E4
A
11R
E5
LB
R
I/O
14R
I/O
17R
I/O
5R
E6
E7
E8
E9
I/O
1R
E10
M/S
BUSY
R
A
0R
F1
F2
F3
A
1L
F4
V
SS
F5
V
SS
F6
I/O
4R
I/O
2R
I/O
0R
F7
F8
F9
V
DD
F10
V
SS
G1
BUSY
L
G2
A
0L
G3
NC
G4
V
DD
G5
V
SS
G6
V
DD
G7
I/O
14L
I/O
15L
I/O
16L
G8
G9
INT
L
H1
A
3L
H2
A
6L
H3
NC
H4
V
SS
H5
I/O
3L
H6
NC
H7
I/O
12L
H8
V
SS
H9
,
I/O
13L
H10
G10
A
2L
J1
A
5L
J2
A
10L
J3
LB
L
J4
CE
L
J5
I/O
1L
J6
I/O
7L
J7
I/O
8L
I/O
17L
I/O
11L
J8
J9
J10
A
4L
K1
A
8L
K2
A
11L
SEM
L
R/W
L
K3
K4
K5
OE
L
K6
I/O
4L
I/O
6L
K7
K8
V
SS
K9
I/O
10L
K10
A
7L
A
9L
A
12L(1)
UB
L
V
DD
V
DD
I/O
0L
I/O
2L
I/O
5L
I/O
9L
5683 drw 03
NOTES:
1. A
12
is a NC for IDT70P34.
2. All V
DD
pins must be connected to power supply.
3. All V
SS
pins must be connected to ground.
4. BF-100 package body is approximately 10mm x 10mm 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.
6.42
3
IDT70P35/34L(IDT70P25/24L)
High-Speed 1.8V 8/4K x 18 (8/4K x 16) Dual-Port Static RAM
ADVANCED
Industrial and Commercial Temperature Ranges
IDT70P25/24 Pin Configurations
(1,2,3,4)
Index
N/C
N/C
N/C
N/C
I/O
10L
I/O
11L
I/O
12L
I/O
13L
V
SS
I/O
14L
I/O
15L
V
DD
V
SS
I/O
0R
I/O
1R
I/O
2R
V
DD
I/O
3R
I/O
4R
I/O
5R
I/O
6R
N/C
N/C
N/C
N/C
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
75
2
74
3
73
1
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
72
71
70
69
68
67
I/O
9L
I/O
8L
I/O
7L
I/O
6L
I/O
5L
I/O
4L
I/O
3L
I/O
2L
V
SS
I/O
1L
I/O
0L
OE
L
V
DD
R/W
L
SEM
L
CE
L
UB
L
LB
L
A
12L
(1)
A
11L
A
10L
A
9L
A
8L
A
7L
A
6L
IDT70P25/24PF
PN100-1
(5)
100-Pin TQFP
Top View
(6)
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
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
12/17/03
N/C
N/C
N/C
N/C
A
5L
A
4L
A
3L
A
2L
A
1L
A
0L
INT
L
BUSY
L
V
SS
M/S
BUSY
R
INT
R
A
0R
A
1R
A
2R
A
3R
A
4R
N/C
N/C
N/C
N/C
5683 drw 04
.
NOTES:
1. A
12
is a NC for IDT70P24.
2. All V
DD
pins must be connected to power supply.
3. All V
SS
pins must be connected to ground.
4. PN100-1 package body is approximately 14mm x 14mm x 1.4mm.
5. This package code is used to reference the package diagram.
6. This text does not indicate orientation of the actual part marking.
I/O
7R
I/O
8R
I/O
9R
I/O
10R
I/O
11R
I/O
12R
I/O
13R
I/O
14R
V
SS
I/O
15R
OE
R
R/W
R
V
SS
SEM
R
CE
R
UB
R
LB
R
A
12R
(1)
A
11R
A
10R
A
9R
A
8R
A
7R
A
6R
A
5R
6.42
4
IDT70P35/34L (IDT70T25/24L)
High-Speed 1.8V 8/4K x 18 (8/4K x 16) Dual-Port Static RAM
ADVANCED
Industrial and Commercial Temperature Ranges
IDT70P25/24 Pin Configurations(cont'd)
(1,2,3,4)
IDT70P25/24BF
BF100
(5)
100-Pin fpBGA
Top View
(6)
12/16/03
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A
6R
B1
A
9R
A
12R(1)
CE
R
B2
B3
B4
V
SS
B5
V
SS
B6
V
SS
B7
I/O
12R
I/O
9R
I/O
7R
B8
B9
B10
NC
C1
NC
C2
A
8R
C3
A
10R
SEM
R
R/W
R
OE
R
I/O
11R
I/O
8R
I/O
6R
C4
C5
C6
C7
C8
C9
C10
A
3R
D1
A
4R
D2
A
5R
D3
A
7R
D4
UB
R
I/O
15R
I/O
14R
I/O
10R
D5
D6
D7
D8
NC
D9
I/O
3R
D10
A
1R
E1
INT
R
E2
A
2R
E3
NC
E4
A
11R
E5
LB
R
E6
I/O
13R
E7
NC
E8
I/O
5R
I/O
1R
E9
E10
M/S
F1
BUSY
R
F2
A
0R
F3
A
1L
F4
V
SS
F5
V
SS
F6
I/O
4R
I/O
2R
I/O
0R
F7
F8
F9
V
DD
F10
V
SS
G1
BUSY
L
G2
A
0L
G3
NC
G4
V
DD
G5
V
SS
G6
V
DD
G7
I/O
13L
I/O
14L
I/O
15L
G8
G9
G10
INT
L
H1
A
3L
H2
A
6L
H3
NC
H4
V
SS
H5
I/O
3L
H6
NC
H7
I/O
11L
H8
V
SS
H9
I/O
12L
H10
,
A
2L
J1
A
5L
J2
A
10L
J3
LB
L
J4
CE
L
J5
I/O
1L
J6
I/O
7L
J7
NC
J8
NC
J9
I/O
10L
J10
A
4L
K1
A
8L
K2
A
11L
K3
SEM
L
R/W
L
K4
K5
OE
L
K6
I/O
4L
K7
I/O
6L
K8
V
SS
K9
I/O
9L
K10
A
7L
A
9L
A
12L(1)
UB
L
V
DD
V
DD
I/O
0L
I/O
2L
I/O
5L
I/O
8L
5683 drw 05
NOTES:
1. A
12
is a NC for IDT70P24.
2. All V
DD
pins must be connected to power supply.
3. All V
SS
pins must be connected to ground.
4. BF-100 package body is approximately 10mm x 10mm 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.
6.42
5
