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SMS44 Datasheet(PDF) 13 Page - Summit Microelectronics, Inc.

Part # SMS44
Description  Highly Programmble Voltage Supervisory Circuit
PDF  16 Pages
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Manufacturer  SUMMIT [Summit Microelectronics, Inc.]
Direct Link  http://www.summitmicro.com
Logo SUMMIT - Summit Microelectronics, Inc.

SMS44 Datasheet(HTML) 13 Page - Summit Microelectronics, Inc.

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2047 2.3 10/23/00
SMS44
SUMMIT MICROELECTRONICS, Inc.
The high order bits of the address byte remain constant.
Should the master transmit more than 16 bytes, prior to
generating the STOP condition, the address counter will
“roll over” and the previously written data will be overwrit-
Figure 10. Read and Write Operations
ten.
As with the byte-write operation, all inputs are
disabled during the internal write cycle. Refer to Figure 10
for the address, ACKnowledge, and data transfer se-
quence.
Typical Write Operation
(Standard memory device type)
A
C
K
R
/
W
A
C
K
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
A
C
K
S
T
O
P
S
T
A
R
T
Typical Reading Operation
(Alternate memory device type)
Master
SDA
Slave
1
1
0
S
T
A
R
T
A
C
K
B
A
2
B
A
1
A
8
R
/
W
A
C
K
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
A
C
K
S
T
O
P
Master
SDA
Slave
0
1
10
A
C
K
R
/
W
A
C
K
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
A
C
K
S
T
O
P
S
T
A
R
T
Writing Configuration Registers
Master
SDA
Slave
01
10
Master
SDA
Slave
Device Type
Address
Bus
Address
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
1
C
7
C
6
C
5
C
4
C
3
C
2
C
1
C
0
A
C
K
R
/
W
A
C
K
S
T
A
R
T
C
7
C
6
C
5
C
4
C
3
C
2
C
1
C
0
Reading the Configuration Register
01
10
A
C
K
R
/
W
A
C
K
S
T
O
P
S
T
A
R
T
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
01
10
Up to 15
additional bytes
can be written
before issuing
the stop.
The host may continue
clocking out data so long as
it provides an ACK response
after each byte.
B
A
2
B
A
1
A
8
B
A
2
B
A
1
X
B
A
2
B
A
1
X
B
A
2
B
A
1
X
2047 Fig10 2.1



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