参数资料
型号: MAX7504MUA+T
厂商: Maxim Integrated
文件页数: 5/13页
文件大小: 710K
描述: IC TEMP SENSOR DIGIT 8-UMAX
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
功能: 温度监视系统(传感器),监视器
传感器类型: 内部
感应温度: -55°C ~ 125°C
精确度: ±3°C(最小值)
拓扑: ADC(三角积分型),寄存器库
输出类型: I²C?/SMBus?
输出警报:
输出风扇:
电源电压: 3 V ~ 5.5 V
工作温度: -55°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-uMAX
包装: 带卷 (TR)
Digital Temperature Sensors and Thermal
Watchdog with Bus Lockup Protection
_______________________________________________________________________________________   5
I
2
C-Compatible Bus Interface
From a software perspective, the MAX7500MAX7504
appear as a set of byte-wide registers that contain tem-
perature data, alarm threshold values, and control bits.
A standard I
2
C-compatible 2-wire serial interface reads
temperature data and writes control bits and alarm
threshold data. Each device responds to its own I
2
C
slave address, which is selected using A0, A1, and A2.
See Table 1.
The MAX7500MAX7504 employ four standard I
2
C
protocols: write byte, read byte, send byte, and receive
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
MAX7501MAX7504 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
MAX7503
1
0
0
1
1
A1
A0
RD/W
MAX7504
1
0
0
1
0
A1
A0
RD/W
Table 1. I
2
C Slave Addresses
t
BUF
t
SU:STO
t
HD:STA
t
SU:STA
t
HD:DAT
t
HIGH
t
LOW
t
SU:DAT
t
HD:STA
SCL
SDA
t
F
t
R
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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