 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
STM32U5A5QJ Datasheet(PDF) 273 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
STM32U5A5QJ Datasheet(HTML) 273 Page - STMicroelectronics |
|
|
273 / 382 page  DS13543 Rev 1 273/382 STM32U5Axxx Electrical characteristics 348 5.3.15 NRST pin characteristics The NRST pin input driver uses the CMOS technology. It is connected to a permanent pull-up resistor, RPU. Unless otherwise specified, the parameters given in the table below are derived from tests performed under the ambient temperature and supply voltage conditions summarized in Table 33. Figure 36. Recommended NRST pin protection 1. The reset network protects the device against parasitic resets. 2. The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in the above table. Otherwise the reset is not taken into account by the device. 3. The external capacitor on NRST must be placed as close as possible to the device. Table 93. NRST pin characteristics(1) Symbol Parameter Conditions Min Typ Max Unit VIL(NRST) NRST input low-level voltage - - - 0.3 × VDDIOx V VIH(NRST) NRST input high-level voltage - 0.7 × VDDIOx -- Vhys(NRST) NRST Schmitt trigger voltage hysteresis -- 200 - mV RPU Weak pull-up equivalent resistor(2) VIN = VSS 30 40 50 kΩ tF(NRST) NRST input filtered pulse - - - 50 ns tNF(NRST) NRST input not-filtered pulse 1.71 V ≤ VDD ≤ 3.6 V 330 - - 1.58 V ≤ VDD ≤ 3.6 V 1000 - - 1. Specified by design. Not tested in production. 2. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the series resistance is minimal (~10% order) . MS19878V3 RPU VDD Internal reset External reset circuit (1) NRST (2) Filter 0.1 μF |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | 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 |
New Zealand ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
