AT90SCR100 datasheet(401/433 Pages) ATMEL

Zakładka z wyszukiwarką danych komponentów

AT90SCR100 Arkusz danych(PDF) 401 Page - ATMEL Corporation

Numer części	AT90SCR100

Szczegółowy opis	8-bit Microcontroller for Smart Card Readers

PDF	433 Pages

Scroll/Zoom	100%

Producent	ATMEL [ATMEL Corporation]

Strona internetowa	http://www.atmel.com

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401 / 433 page

401

TPR0327AY–SMS–30Jan09

AT90SCR100

30.2.1

Recommendations

1. In Order to reduce the board parasitics, the external components for DCDC converter

should be as close as possible to the chip pins (ideally solded directly on the pins).

2. In order to have a correct current limitation, the board parasitic resistances must be

taken into account in the choice of the Rs value (e.g., if each metal line connecting Rs

to the chip adds a 10 m

Ω resistance, the correct Rs value should be 200-2x10=180mΩ)

3. CVcc and CVss lines must have very low resistance (short and wide metal line).

4. R1, R2, R3 and R4 must be placed as close as possible to the chip pins.

5. Connect e-pad to ground. If possible connect it to ground plane

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