 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
CAT823 Datasheet(PDF) 10 Page - Catalyst Semiconductor |
|
||||||||||||||||||||||||||||||
CAT823 Datasheet(HTML) 10 Page - Catalyst Semiconductor |
|
|
10 / 14 page  CAT823, CAT824, CAT825 Doc. No. MD-3027 Rev. B 10 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice APPLICATION NOTES µP’s with Bidirectional Reset Pins The RESET ¯¯¯¯¯¯ output can be pulled low by processors like the 68HC11 allowing for a system reset issued by the processor. The maximum pullup current that can be sourced by the CAT82_L/M is 1.5mA (and by the CAT82_T/R/S/Z/Y is 800µA) allowing the processor to pull the output low even when the CAT82x is pulling it high. Power Transients Generally short duration negative-going transients of less than 2µs on the power supply at VRST minimum will not cause a reset condition. However the lower the voltage of the transient the shorter the required time to cause a reset output. These issues can usually be remedied by the proper location of bypass capacitance on the circuit board. OUTPUT VALID CONDITIONS The RESET ¯¯¯¯¯¯ output uses a push-pull output which can maintain a valid output down to a VCC of 1.0 volts. To sink current below 0.8V a resistor can be connected from RESET ¯¯¯¯¯¯ to Ground (see Figure 8.) This arrangement will maintain a valid value on the RESET ¯¯¯¯¯¯ output during both power up and down but will draw current when the RESET ¯¯¯¯¯¯ output is in the high state. A resistor value of about 100kΩ should be adequate in most situations to maintain a low condition valid output down to VCC equal to 0V. Figure 8. RESET ¯¯¯¯¯¯ Valid to 0 Volts VCC 100kΩ CAT823 VCC GND WDI MR µC RESET RESET |
Similar Part No. - CAT823_08 |
|
Similar Description - CAT823_08 |
|
|
|
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
