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BD37A19FVM-TR Fiches technique(PDF) 2 Page - Rohm |
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BD37A19FVM-TR Fiches technique(HTML) 2 Page - Rohm |
2 / 19 page BD37Axx Series BD87Axx Series BD99A41F Datasheet Pin Configurations Figure 1. Pin Configurations Pin Descriptions BD37AxxFVM BD87AxxFVM / BD99A41F No. Pin name Function No. Pin name Function 1 CLK Clock input from microcontroller 1 CTW WDT time setting capacitor connection pin 2 CT Reset delay time setting capacitor connection pin 2 CT Reset delay time setting capacitor connection pin 3 CTW WDT time setting capacitor connection pin 3 CLK Clock input from microcontroller 4 VDD Power supply pin 4 GND GND pin 5 N.C. NC pin 5 VDD Power supply pin 6 GND GND pin 6 INH WDT ON/OFF setting pin INH=H/L:WDT=OFF/ON(BD87AxxFVM) INH=H/L:WDT=ON/OFF(BD99A41F) 7 INH WDT ON/OFF setting pin INH=H/L:WDT=ON/OFF 7 N.C. NC pin 8 RESET Reset output pin 8 RESET Reset output pin Block Diagrams BD37AxxFVM BD87AxxFVM / BD99A41F CT pin capacitor: 470pF to 3.3µF CTW pin capacitor: 0.001µF to 10µF Figure 2.Block Diagrams MSOP8 (TOP VIEW) 1 2 3 4 8 7 6 5 SOP8 (TOP VIEW) 1 2 3 4 8 7 6 5 RESET INH Vref VDD GND N.C. VDD VthH VthL R S Q R S Q + + + CLK CT CTW VDD 1 2 3 4 8 7 6 5 Pulse Generation Circuit Pulse Generation Circuit CTW CT CLK GND RESET N.C. Vref VDD INH VDD VDD VthH VthL R S Q R S Q 1 2 3 4 5 6 7 8 + + + 2/15 TSZ02201-0G1G0AN00130-1-2 © 2013 ROHM Co., Ltd. All rights reserved. 05.Sep.2014 Rev.003 www.rohm.com TSZ22111・15・001 |
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