MAX7504MUA+ Maxim Integrated Products, MAX7504MUA+ Datasheet - Page 5

• Manufacturer Part Number: MAX7504MUA+
• Description: IC TEMP SENSOR DIGIT 8-UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX7504MUA+

• Function: Temp Sensor, Watchdog
• Topology: ADC (Sigma Delta), Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Full Temp Accuracy: +/- 3 C
• Digital Output - Bus Interface: Serial (2-Wire, I2C)
• Digital Output - Number Of Bits: 9 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 1. I
Figure 1. Serial Bus Timing
From a software perspective, the MAX7500–MAX7504
appear as a set of byte-wide registers that contain tem-
perature data, alarm threshold values, and control bits.
A standard I
temperature data and writes control bits and alarm
threshold data. Each device responds to its own I
slave address, which is selected using A0, A1, and A2.
See Table 1.
The MAX7500–MAX7504 employ four standard I
protocols: write byte, read byte, send byte, and receive
MAX7500
MAX7501
MAX7502
MAX7503
MAX7504
DEVICE
t
SDA
SCL
HD:STA
PARAMETERS ARE MEASURED FROM 10% TO 90%.
CONDITION
START
(S)
2
2
C Slave Addresses
C-compatible 2-wire serial interface reads
t
SU:DAT
Digital Temperature Sensors and Thermal
BIT 7
I
_______________________________________________________________________________________
t
LOW
2
1
1
1
1
1
C-Compatible Bus Interface
Watchdog with Bus Lockup Protection
t
R
t
HIGH
BIT 6
t
0
0
0
0
0
F
t
HD:DAT
BIT 5
0
0
0
0
0
t
SU:STA
2
2
C
C
REPEATED START
BIT 4
CONDITION
1
1
1
1
1
(SR)
byte (Figures 1, 2, and 3). The shorter receive byte pro-
tocol allows quicker transfers, provided that the correct
data register was previously selected by a read-byte
instruction. Use caution when using the shorter proto-
cols in multimaster systems, as a second master could
overwrite the command byte without informing the first
master. The MAX7500 has eight different slave
addresses available; therefore, a maximum of eight
MAX7500 devices can share the same bus. The
MAX7501–MAX7504 each have four different slave
addresses available.
t
HD:STA
BIT 3
A2
1
0
1
0
ACKNOWLEDGE
(A)
BIT 2
A1
A1
A1
A1
A1
t
SU:STO
CONDITION
BIT 1
STOP
(P)
A0
A0
A0
A0
A0
t
BUF
CONDITION
START
(S)
BIT 0
RD/W
RD/W
RD/W
RD/W
RD/W
5