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MB9B360R 데이터시트(PDF) 55 Page - Cypress Semiconductor |
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MB9B360R 데이터시트(HTML) 55 Page - Cypress Semiconductor |
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55 / 166 page ![]() Document Number: 002-04872 Rev.*A Page 55 of 166 MB9B360R Series Pull-Up function of 5V tolerant I/O Please do not input the signal more than VCC voltage at the time of Pull-Up function use of 5V tolerant I/O. Adjoining wiring on circuit board If wiring of the crystal oscillation circuit X1A adjoins and also runs in parallel with the wiring of P48/VREGCTL, there is a possibility that the oscillation erroneously counts because X1A has noise with the change of P48/VREGCTL. Keep as much distance as possible between both wirings and insert the ground pattern between them in order to avoid this possibility. Handling when using debug pins When debug pins(TDO/TMS/TDI/TCK/TRSTX or SWO/SWDIO/SWCLK) are set to GPIO or other peripheral functions, only set them as output, do not set them as input. P47/ X1A P48/ VREGCTL Ground P46/ X0A P49/ VWAKEUP Not allowed to run both wirings in parallel Insert the ground pattern Device |
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