 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
BMP388 Datasheet(PDF) 26 Page - Bosch Sensortec GmbH |
|
||||||||||||||||||||||||||||||
BMP388 Datasheet(HTML) 26 Page - Bosch Sensortec GmbH |
|
|
26 / 57 page  Bosch Sensortec | BMP388 Datasheet 26 | 57 Modifications reserved |Data subject not change without notice | Printed in Germany Document number: BST-BMEP388-DS001-01 Revision_1.1_032018 3.9.2. Measurement rate in forced mode and normal mode In both forced mode and normal mode the pressure and temperature measurement duration follow the equation: �������������������� = 234µ���� + ��������������������_�������� ∙ (392µ���� + 2������������_���� ∙ 2000µ����) + ����������������_�������� ∙ (313µ���� + 2������������_���� ∙ 2000µ����) With: �������������������� = total conversion time in µs ��������������������_�������� = “0” or “1”, depending of the status of the press_en bit ����������������_�������� = “0” or “1”, depending of the status of the temp_en bit 2������������_���� = amount of pressure oversampling repetitions 2������������_���� = amount of temperature oversampling repetitions Maximum possible readout frequency in forced mode (typical): ���������������� = 1 ��������������������[µ����] ∙ 106 Maximum possible readout frequency in normal mode: ������������_������������ = ⌈������������2 ( 200�������� ����������������[��������] )⌉ ����������������_������������������������_���������������� = 200�������� 2������������_������������ 3.10. Data readout from data registers To read out data after a conversion, it is strongly recommended to use a burst read and not address every register individually. This will prevent a possible mix-up of bytes belonging to different measurements and reduce interface traffic. Data readout is done by starting a burst read from register press_xlsb to temp_msb. The data are read out in an unsigned 24-bit format both for pressure and for temperature. The timing for data readout in forced mode should be done so that the maximum measurement times (see Sec. 3.9.1) are respected. In normal mode, readout can be done at a speed similar to the expected data output rate (see Sec. 3.9.2). After the uncompensated values of temperature and pressure have been read, the actual pressure and temperature need to be calculated using the compensation parameters stored in the device. The procedure is elaborated in Sec. 3.11. 3.10.1. Data register shadowing In normal mode, measurement timing is not necessarily synchronized to readout. This means that new measurement results may become available while the user is reading the results from the previous measurement. In this case, shadowing is performed in order to guarantee data consistency. Shadowing will only work if all data registers are read in a single burst read. Therefore, the user must use burst reads if he does not synchronize data readout with the measurement cycle. Using several independent read commands may result in inconsistent data. If a new measurement is finished and the data registers are still being read, the new measurement results are transferred into shadow data registers. The content of shadow registers is transferred into data registers as soon as the user ends the burst read, even if not all data registers were read. Reading across several data registers can therefore only be guaranteed to be consistent within one measurement cycle if a single burst read command is used. The end of the burst read is marked by the rising edge of CSB pin. After the end of the burst read, all user data registers are updated at once. |
Similar Part No. - BMP388 |
|
Similar Description - BMP388 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
