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): 22/22頁(yè)
文件大小: 570K
代理商: ADT7408CCPZ2-REEL7
Preliminary Technical Data
ADT7408
Rev. PrC | Page 9 of 22
Capability Register (read only)
This 16-bit read only register indicates the capabilities of the thermal sensor.
Table 9. Capability Register
Bits
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Content
RFU
TRES1
TRES0
Wider
Range
Higher
Precision
Has Alarm &
Critical Trips
*RFU=Reserved For Future Use
Table 10. Capability Mode Description
Bits
Description
D0
Basic Capability
1 – Has Alarm & Critical Trips Capability (Required)
D1
Accuracy
0 – Default, accuracy +/-2oC over the active and +/-3oC monitor ranges
D2
Wider Range
0 – Values lower than 0oC will be clamped and represented as binary value 0
1 – Can read temperature below 0oC and set sign bit accordingly (Default)
D4:D3
Temperature Resolution
00 – 0.5oC LSB
01 – 0.25oC LSB
10 – 0.125oC LSB
11 – 0.0625oC LSB (Default)
D15:D5
0 – Reserved for future use. Must be zero
Configuration Register (read/write)
This 16-bit read/write register stores various configuration modes for the ADT7408 and are shown in Tables 11 and 12.
Table 11. Configuration Register
Bits
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Content
RFU
Hysteresis
Shut-
down
Mode
Critical
Lock
Bit
Alarm
Lock
Bit
Clear
Event
Output
Status
Event
Output
Control
Critical
Event
Only
Event
Polarity
Event
Mode
Table 12. Configuration Mode Description
Bits
Description
D0
Event Mode
0 – Comparator output mode (default)
1 – interrupt mode
When either of the lock bits is set, this bit cannot be altered until unlocked.
D1
Event Polarity
0 – Active Low (default)
1 – Active High
When either of the lock bits is set, this bit cannot be altered until unlocked.
D2
Critical Event Only
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