Electronic Components Datasheet Search |
|
AS1904C23 Datasheet(PDF) 6 Page - ams AG |
|
AS1904C23 Datasheet(HTML) 6 Page - ams AG |
6 / 9 page www.austriamicrosystems.com Revision 1.41 6 - 9 AS1904, AS1905, AS1906 Data Sheet - D e t a i l e d D e s c r i p t i o n 8 Detailed Description Interfacing to Microprocessors with Bi-Directional Reset Pins The device has an open drain RESETN output, which enables easy interfacing to microprocessors (µP) with bi-direc- tional reset pins, such as the Motorola 68HC11. The RESETN pin of the microcontroller (µC) can be connected directly to the µP supervisor's RESETN output with a single pull-up resistor (see Figure 1 on page 1). Negative-Going VDD Transients The device is optimized to ignore short-duration, negative-going VDD transients (glitches) in order to avoid incorrect resets. In the graph Maximum Transient Duration vs. Reset Threshold Overdrive (page 6) , the conditions are shown, for which the reset pulses are not generated. In the graph the maximum pulse width that a negative VDD transient may have when a reset signal is generated. As the amplitude of the transient increases, the maximum allowable pulse width decreases. Options Table 4. Coding of Factory-trimmed Reset Active Time-Out Period Device Suffix tTP in Milliseconds Min Typ Max AS190x_xx A 3 5 8 AS190x_xx B 12 20 32 AS190x_xx C 60 100 160 AS190x_xx D 300 500 800 Table 5. Output Variants Device Output Functionality AS1904xxx Active Low (RESETN) AS1905xxx Active High (RESET) AS1906xxx Open Drain (RESETN) Table 6. Coding of Factory-Trimmed Reset Threshold Voltages Device Suffix Reset Threshold Voltage, VTH in V TA = +25°C TA = -40 to +85°C Min Typ Max Min Max AS190xx__ 22 2.167 2.2 2.233 2.145 2.255 AS190xx__ 23 2.285 2.32 2.355 2.262 2.378 AS190xx__ 24 2.364 2.4 2.436 2.340 2.460 AS190xx__ 25 2.463 2.5 2.538 2.438 2.563 AS190xx__ 26 2.591 2.63 2.669 2.564 2.696 AS190xx__ 27 2.660 2.7 2.741 2.633 2.768 AS190xx__ 28 2.758 2.8 2.842 2.730 2.870 AS190xx__ 29 2.886 2.93 2.974 2.857 3.003 AS190xx__ 30 2.955 3.0 3.045 2.925 3.075 AS190xx__ 31 3.034 3.08 3.126 3.003 3.157 |
Similar Part No. - AS1904C23 |
|
Similar Description - AS1904C23 |
|
|
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 |