參數(shù)資料
型號(hào): IDT723612L20PF
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類(lèi): DRAM
英文描述: BiCMOS SyncBiFIFOO 64 x 36 x 2
中文描述: 64 X 36 BI-DIRECTIONAL FIFO, 12 ns, PQFP120
封裝: TQFP-120
文件頁(yè)數(shù): 2/29頁(yè)
文件大?。?/td> 350K
代理商: IDT723612L20PF
2
COMMERCIAL TEMPERATURE RANGE
IDT723612 BiCMOS SyncBiFIFO
64 x 36 x 2
fast as 10ns. Two independent 64 x 36 dual-port SRAM
FIFOs on board the chip buffer data in opposite directions.
Each FIFO has flags to indicate empty and full conditions and
two programmable flags (almost-full and almost-empty) to
indicate when a selected number of words is stored in
memory. Communication between each port can bypass the
FIFOs via two 36-bit mailbox registers. Each mailbox register
has a flag to signal when new mail has been stored. Parity is
checked passively on each port and may be ignored if not
desired. Parity generation can be selected for data read from
each port. Two or more devices can be used in parallel to
create wider data paths.
The IDT723612 is a clocked FIFO, which means each port
employs a synchronous interface. All data transfers through
Note:
1.
2.
NC - No internal connection
Uses Yamaichi socket IC51-1324-828
a port are gated to the LOW-to-HIGH transition of a port clock
by enable signals. The clocks for each port are independent
of one another and can be asynchronous or coincident. The
enables for each port are arranged to provide a simple bi-
directional interface between microprocessors and/or buses
with synchronous control.
The full flag (
FFA
,
FFB
) and almost-full (
AFA
,
AFB
) flag of
a FIFO are two-stage synchronized to the port clock that writes
data to its array. The empty flag (
EFA
,
EFB
) and almost-empty
(
AEA
,
AEB
) flag of a FIFO are two stage synchronized to the
port clock that reads data from its array.
The IDT723612 is characterized for operation from 0
°
C to
70
°
C.
PIN CONFIGURATIONS
*
*
Electrical pin 1 in center of beveled edge. Pin 1 identifier in corner.
GND
B
0
B
1
B
GND
B
3
B
4
B
5
B
6
V
CC
B
7
B
8
B
9
GND
B
10
B
11
V
CC
B
12
B
13
B
14
GND
B
15
B
16
B
17
B
18
B
19
B
20
GND
B
21
B
22
B
23
GND
A
0
A
1
A
2
GND
A
3
A
4
A
5
A
6
V
CC
A
7
A
8
A
9
GND
A
10
A
11
V
CC
A
12
A
13
A
14
GND
A
15
A
16
A
17
A
18
A
19
A
20
GND
A
21
A
22
A
23
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
116
115
114
113
112
111
110
109
108
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
8
3136 drw 02
1
1
1
1
1
1
1
1
1
9
8
7
6
5
4
3
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
V
C
V
C
A
2
A
2
A
2
A
2
G
A
2
A
2
V
C
A
3
A
3
A
3
G
A
3
A
3
A
3
G
B
3
B
3
B
3
G
B
3
B
3
B
3
V
C
B
2
B
2
B
2
G
B
2
B
2
B
2
5
5
5
5
5
5
5
5
5
6
6
6
6
6
6
6
6
6
6
7
7
7
7
7
7
7
7
7
7
8
8
8
E
C
W
V
C
P
F
0
O
F
1
N
G
N
N
N
G
V
C
W
C
E
G
M
M
P
PQFP (PQ132-1, order code: PQF)
TOP VIEW
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