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ZLR64400ROMMCU Datasheet(PDF) 29 Page - Zilog, Inc. |
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ZLR64400ROMMCU Datasheet(HTML) 29 Page - Zilog, Inc. |
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29 / 155 page  PS024502-1205 P R E L I M I N A R Y Port 3 ZLR64400 ROM MCU Product Specification 19 Comparator Inputs In analog mode, P31 and P32 have a comparator front end. The comparator reference is supplied by P33 and PREF1. In this mode, the P33 internal data latch and its corresponding IRQ1 are diverted to the stop-mode recovery sources (excluding P31, P32, and P33) as indicated in Figure 6 on page 15. In digital mode, P33 is used as bit 3 of the Port 3 input register, which then generates IRQ1. Comparators are powered down by entering STOP mode. For P30:P33 to be used as a stop-mode recovery source, these inputs must be placed into digital mode. Comparator Outputs The comparators can be programmed to be output on P34 and P37 by setting bit 0 of the PCON Register. Note: |
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