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MAX7501MUA Datasheet(PDF) 5 Page - Maxim Integrated Products

Part # MAX7501MUA
Description  Digital Temperature Sensors and Thermal Watchdog with Bus Lockup Protection
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX7501MUA Datasheet(HTML) 5 Page - Maxim Integrated Products

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Digital Temperature Sensors and Thermal
Watchdog with Bus Lockup Protection
_______________________________________________________________________________________
5
I2C-Compatible Bus Interface
From a software perspective, the MAX7500/MAX7501/
MAX7502 appear as a set of byte-wide registers that
contain temperature data, alarm threshold values, and
control bits. A standard I2C-compatible 2-wire serial
interface reads temperature data and writes control bits
and alarm threshold data. Each device responds to its
own I2C slave address, which is selected using A0, A1,
and A2. See Table 1.
The MAX7500/MAX7501/MAX7502 employ four stan-
dard I2C protocols: write byte, read byte, send byte,
and receive byte (Figures 1, 2, and 3). The shorter
receive byte protocol allows quicker transfers, provided
that the correct data register was previously selected
by a read-byte instruction. Use caution when using the
shorter protocols in multimaster systems, as a second
master could overwrite the command byte without
informing the first master. The MAX7500 has eight dif-
ferent slave addresses available; therefore, a maximum
of eight MAX7500 devices can share the same bus.
The MAX7501/MAX7502 each have four different slave
addresses available.
DEVICE
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
MAX7500
1
0
0
1
A2
A1
A0
RD/W
MAX7501
1
0
0
1
1
A1
A0
RD/W
MAX7502
1
0
0
1
0
A1
A0
RD/W
Table 1. I2C Slave Addresses
tBUF
tSU:STO
tHD:STA
tSU:STA
tHD:DAT
tHIGH
tLOW
tSU:DAT
tHD:STA
SCL
SDA
tF
tR
ACKNOWLEDGE
(A)
STOP
CONDITION
(P)
START
CONDITION
(S)
START
CONDITION
(S)
REPEATED START
CONDITION
(SR)
PARAMETERS ARE MEASURED FROM 10% TO 90%.
Figure 1. Serial Bus Timing


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