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BU1852GXW Folha de dados(PDF) 9 Page - Rohm |
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BU1852GXW Folha de dados(HTML) 9 Page - Rohm |
9 / 26 page Technical Note 9/25 BU1852GUW, BU1852GXW www.rohm.com 2012.08 - Rev.B © 2012 ROHM Co., Ltd. All rights reserved. ● Pin Functional Descriptions PIN name I/O Function Init Cell Type VDD - Power supply (Core, I/O except for COL[11:0], ADR) - - VDDIO - Power supply (I/O for COL[11:0], ADR) - - VSS - GND - - XRST I Reset(Low Active) I A XI I External clock input (32kHz) I I TW I Select protocol H: original 3 wire L: I 2C I B ADR I (TW=L) Select Device Address for I 2C (TW=H) H : Key scan rate 1/2 L : Key scan rate original I B XINT O Key/GPIO Interrupt H(TW=H) Hi-z(TW=L) E SCL I Clock for serial interface I D SDA I/O Serial data inout for serial interface I F ROW0 I/O ROW0 / GPIO0 I [100kΩ Pull-up] G ROW1 I/O ROW1 / GPIO1 ROW2 I/O ROW2 / GPIO2 ROW3 I/O ROW3 / GPIO3 ROW4 I/O ROW4 / GPIO4 ROW5 I/O ROW5 / GPIO5 ROW6 I/O ROW6 / GPIO6 ROW7 I/O ROW7 / GPIO7 COL0 I/O COL0 / GPIO8 L(TW=H) I [150kΩ Pull-down] (TW=L) H COL1 I/O COL1 / GPIO9 COL2 I/O COL2 / GPIO10 COL3 I/O COL3 / GPIO11 COL4 I/O COL4 / GPIO12 COL5 I/O COL5 / GPIO13 COL6 I/O COL6 / GPIO14 COL7 I/O COL7 / GPIO15 COL8 I/O COL8 / GPIO16 COL9 I/O COL9 / GPIO17 COL10 I/O COL10 / GPIO18 COL11 I/O COL11 / GPIO19 PORENB I Power on reset enable (Low Active) I B TESTM0 I Test Pins※ 1 I C TESTM1 I ※ 1 Note: All these pins must be tied down to GND in normal operation. |
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