 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
TCA6418E Datasheet(PDF) 8 Page - Texas Instruments |
|
|
||||||||||||||||||||||||||||||
TCA6418E Datasheet(HTML) 8 Page - Texas Instruments |
|
|
8 / 30 page  VCC Ramp-Up Time to Re-Ramp Time Ramp-Down VIN drops below POR levels VCC_RT VCC_FT VCC_TRR_VPOR50 VCC Ramp-Up Re-Ramp-Up Time to Re-Ramp Time Ramp-Down VCC_RT VCC_RT VCC_FT VCC_TRR_GND TCA6418E SCPS243 – SEPTEMBER 2012 www.ti.com Power-On Reset When power (from 0 V) is applied to VCC, an internal power-on reset holds the TCA6418E in a reset condition until VCC reaches VPOR. At that time, the reset condition is released, and the TCA6418E registers and I 2C/SMBus state machine initialize to their default states. After that, VCC must be lowered below 0.2 V and back up to the operating voltage for a power-reset cycle. Power-On Reset Requirements In the event of a glitch or data corruption, TCA6418E can be reset to its default conditions by using the power-on reset feature. Power-on reset requires that the device go through a power cycle to be completely reset. This reset also happens when the device is powered on for the first time in an application. The two types of power-on reset are shown in Figure 1 and Figure 2. Figure 1. VCC is Lowered Below 0.2 V or 0 V and Then Ramped Up to VCC Figure 2. VCC is Lowered Below the POR Threshold, Then Ramped Back Up to VCC Table 2 specifies the performance of the power-on reset feature for TCA6418E for both types of power-on reset. Table 2. RECOMMENDED SUPPLY SEQUENCING AND RAMP RATES(1) PARAMETER MIN TYP MAX UNIT VCC_FT Fall rate See Figure 1 1 100 ms VCC_RT Rise rate See Figure 1 0.01 100 ms VCC_TRR_GND Time to re-ramp (when VCC drops to GND) See Figure 1 0.001 ms VCC_TRR_POR50 Time to re-ramp (when VCC drops to VPOR_MIN – 50 mV) See Figure 2 0.001 ms Level that VCCP can glitch down to, but not cause a functional VCC_GH See Figure 3 1.2 V disruption when VCCX_GW = 1 μs Glitch width that will not cause a functional disruption when VCC_GW See Figure 3 μs VCCX_GH = 0.5 × VCCx VPORF Voltage trip point of POR on falling VCC 0.767 1.144 V VPORR Voltage trip point of POR on rising VCC 1.033 1.428 V (1) TA = –40°C to 85°C (unless otherwise noted) 8 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated Product Folder Links: TCA6418E |
Similar Part No. - TCA6418E |
|
Similar Description - TCA6418E |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | 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
