參數(shù)資料
型號: AT30TS750-XM8-T
廠商: ATMEL CORP
元件分類: 溫度/濕度傳感器
英文描述: DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 3Cel, SQUARE, SURFACE MOUNT
封裝: 3 X 3 MM, GREEN, PLASTIC, MSOP-8
文件頁數(shù): 16/52頁
文件大小: 1369K
代理商: AT30TS750-XM8-T
Atmel AT30TS750 [Preliminary]
data being output. Similarly, any attempts to write to one of the nonvolatile registers while the
NVRBSY bit is in the logic “1” state will result in the data being ignored.
Both the Copy
Nonvolatile Registers to Volatile Registers and the Copy Volatile Registers to Nonvolatile
Registers commands will also be ignored when the NVRBSY bit is in the logic “1” state. For more
details and a complete list of commands that are and are not allowed while NVRBSY is in the
logic “1” state, see the Operations Allowed During Nonvolatile Busy Status section on page 33.
Figure 6-4.
Write to Configuration Register
SCL
SDA
ACK
FROM
SLAVE
START
BY
MASTER
2
1
MSB
3
16
7
5
49
8
ADDRESS BYTE
POINTER REGISTER BYTE
STOP
BY
MASTER
23
16
7
5
49
8
0
1
A
0
0000000
1
0
ACK
FROM
SLAVE
MSB
0
CONFIGURATION REGISTER UPPER BYTE
23
16
7
5
49
8
ACK
FROM
SLAVE
MSB
0
D15 D14 D13 D12 D11 D10
D9
D8
Figure 6-5.
Read from Configuration Register
SCL
SDA
ACK
FROM
SLAVE
START
BY
MASTER
2
1
MSB
3
16
7
5
49
8
ADDRESS BYTE
CONFIGURATION REGISTER UPPER BYTE
STOP
BY
MASTER
23
16
7
5
49
8
0
1
A
1
0
D15 D14 D13 D12 D11 D10
D9
D8
MSB
NACK
FROM
MASTER
1
Note:
Assumes the Pointer Register was previously set to point to the Configuration Register
6.4
Nonvolatile Configuration Register
The Nonvolatile Configuration Register is a 16-bit wide read/write register used to manage key
power-up/reset device settings and operational modes including the locking of the AT30TS750’s
various registers.
The Nonvolatile Configuration Register is used in conjunction with the
Configuration Register to control how the device operates.
All bits in the Nonvolatile
Configuration Register will retain their state even after the device has been powered down or
reset. On every power up or reset sequence, the contents of the most-significant byte (bits 15
through 8) of the Nonvolatile Configuration Register will be copied into the Configuration Register,
after which all device operations and settings will then be controlled by the Configuration Register.
By utilizing the Nonvolatile Configuration Register, the device can power-up or reset in a pre-
defined, user-selected operating mode (e.g. Comparator Mode, Shutdown Mode, etc.) with pre-
defined settings (e.g. 12-bit resolution, ALERT pin active high, etc.). Therefore, unlike standard
LM75-type temperature sensors, there is no need to update the Configuration Register settings
after every power-up or reset.
Since the Nonvolatile Configuration Register utilizes nonvolatile storage cells, care must be taken
when updating the register to accommodate the aspects of an associated program time and finite
program endurance limit. Power must not be removed from the device during the internally self-
8749A-DTS-03/11
23
R
相關(guān)PDF資料
PDF描述
AT30TS750-MA8-T DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT
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AT42QT1070-SSU PROXIMITY SENSOR-CAPACITIVE, 0.6-2.6V, RECTANGULAR, SURFACE MOUNT
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