EM78468
8-BIT Microcontroller
Fig. 12 External Power on Reset Circuit
4.7.2 Residue-Voltage Protection
When battery is replaced, device power (VDD) is disconnected but residue-voltage
remains. The residue-voltage may trips below minimum VDD, but above zero. This
condition may cause poor power on reset. Fig.13 and Fig.14 show how to build a
residue-voltage protection circuit
Fig. 13 Circuit 1 for the Residue Voltage Protection
Fig. 14 Circuit 2 for the Residue Voltage Protection
Product Specification (V1.1) 04.11.2005
(This specification is subject to change without further notice)
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ELAN [ ELAN MICROELECTRONICS CORP ]
