參數(shù)資料
型號(hào)： ADT7408CCPZ2-REEL7
廠商： ANALOG DEVICES INC
元件分類： 溫度/濕度傳感器
英文描述： DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 4Cel, SQUARE, SURFACE MOUNT
封裝： 3 X 3 MM, MO-229VEED-4, LFCSP-8
文件頁(yè)數(shù)： 21/22頁(yè)
文件大?。?/td> 570K
代理商： ADT7408CCPZ2-REEL7
ADT7408
Preliminary Technical Data
Rev. PrC | Page 8 of 22
DESCRIPTION
The thermal sensor continuously monitors the temperature and
updates the temperature data ten times per second.
Temperature data is latched internally by the device and may be
read by software from the bus host at any time.
SMBus/I2C slave address selection pins allow up to 8 such
devices to co-exist on the same bus. This means that up to 8
memory modules can be supported given each module has one
such slave device address slot.
After initial power-on, the configuration registers are set to the
default values. Software can write to the configuration register
to set bits as per the bit-definitions in the following section.
ADT7408 REGISTERS
The ADT7408 contains sixteen accessible registers shown in
Table 6. The address pointer register is the only register that is 8
bits while the rest are 16 bits wide. On power-up, the Address
Pointer Register is loaded with 0x00 and points to the
Capability Register.
Table 6. ADT7408 Registers
Pointer
Address
Name
Power-On
Default
Read/Write
Not
Applicable
Address Pointer
0x00
Write
0x00
Capability
Register
0x001D
Read
0x01
Configuration
Register
0x0000
Read/Write
0x02
Alarm Temp
Upper Boundary
Trip Register
0x0000
Read/Write
0x03
Alarm Temp
Lower Boundary
Trip Register
0x0000
Read/Write
0x04
Critical Temp
Trip Register
0x0000
Read/Write
0x05
Temperature
Register
Undefined
Read
0x06
Manufacturer’s
ID Register
0x11D4
Read
0x07
Device
ID/Revision
Register
0x0800
Read
0x08-0x0F
Vendor-defined
Registers
0x0000
Reserved
Address Pointer Register (write only)
This 8-bit write only register selects which of the 16-bit registers
is accessed in subsequent read/write operations. Address space
between 0x08 and 0x0F are reserved for factory usage or test
registers.
Table 7. Address Pointer Register
Bits
D7
D6
D5
D4
D3
D2
D1
D0
Content
0
Register
Select
Register
Select
Register
Select
Register
Select
Table 8. Address Pointer Selected Registers
D2
D1
D0
Register Selected
0
Capability Register
0
1
Configuration Register
0
1
0
Alarm Temp Upper Boundary Trip
Register
0
1
Alarm Temp Lower Boundary Trip
Register
1
0
Critical Temp Trip Register
1
0
1
Temperature Register
1
0
Manufacturer ID
1
Device ID/Revision
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