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IC-MPEVALMP1D датащи(PDF) 12 Page - IC-Haus GmbH |
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IC-MPEVALMP1D датащи(HTML) 12 Page - IC-Haus GmbH |
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12 / 22 page ![]() iC-MP 8-BIT HALL ANGLE ENCODER WITH RATIOMETRIC OUTPUT Rev B1, Page 12/22 PROGRAMMING MODE When pulling the VZAP pin to high during startup, the programming mode is entered (see ’OPERATING MODES’). In this mode there are three different cate- gories of operation: • Write ROM Mode (V(VZAP) = Vzap(), according to ELEC.CHAR., no. 507): In Write ROM Mode each Zener zap diode is burned (= zapped) immediately on the rising edge of MA. See Figure 13 for details. For the conditions of oper- ation of Write ROM Mode, see ELEC.CHAR., ’Zap- ping Input VZAP’. • Write RAM Mode (V(VZAP) = VDD): In Write RAM Mode the iC-MP reacts as in Write ROM Mode but there is no zapping of the Zener zap diodes. This mode can be used to temporarily pro- gram iC-MP (non-permanent) for test purpose. • Read ROM (V(VZAP) = VDD): In Read ROM Mode the content of the Zener zap diodes is read out. A Read ROM operation over- writes iC-MP’s RAM content. Figure 11: Serial timing of Read ROM Mode Figure 12: Serial timing of Write RAM Mode |
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