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PMS164 Datasheet(PDF) 39 Page - PADAUK Technology.

Part # PMS164
Description  12 Touch Keys OTP Controller
PDF  74 Pages
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Manufacturer  PADAUK [PADAUK Technology.]
Direct Link  http://www.padauk.com.tw/
Logo PADAUK - PADAUK Technology.

PMS164 Datasheet(HTML) 39 Page - PADAUK Technology.

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PMS164
12 Touch Keys OTP Controller
©Copyright 2020, PADAUK Technology Co. Ltd
Page 39 of 74
PDK-DS-PMS164-EN-V000 – Mar. 25, 2020
Fig. 12: Hardware diagram of IO buffer
Other than PA5, all the IO pins have the same structure; PA5 can be open-drain ONLY when setting to output
mode (without Q1). When PMS164 is put in power-down or power-save mode, every pin can be used to
wake-up system by toggling its state. Therefore, those pins needed to wake-up system must be set to input
mode and set the corresponding bits of registers padier to high. The same reason, padier.0 should be set to
high when PA0 is used as external interrupt pin.
5.11. Reset
There are many causes to reset the PMS164, once reset is asserted, all the registers in PMS164 will be set
to default values, system should be restarted once abnormal cases happen, or by jumping program counter
to address ’h0. The data memory is in uncertain state when reset comes from power-up and LVR; however,
the content will be kept when reset comes from PRSTB pin or WDT timeout.



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