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BU92747KV Datasheet(PDF) 2 Page - Rohm |
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BU92747KV Datasheet(HTML) 2 Page - Rohm |
2 / 5 page 2/4 REV. A ●Electrical Characteristics (DC Characteristics) Ta=25 °C, V DD=1.8V, VIO1=1.8V, VIO2=1.8V and GND=0V unless otherwise stated Standard value Item Symbol MIN TYP MAX Unit Remarks Dissipation current 1 IDD1 - 0.1 10 µA For input with no output load = 0V Dissipation current 2 IDD2 - 10 30 mA For XIN = 48MHz Digital high-level input voltage VIH 0.75 × V IO - - V Digital low-level input voltage VIL - - 0.25 × V IO V - - 10 µA Input voltage level 1.8V Digital high-level input current IIH - - 100 µA Input voltage level 1.8V TEST1-3 Digital low-level input current IIL - - 10 µA Input voltage level GND Digital high-level output voltage VOH VIO-0.6 - - V INTR, D0-15, IrDAPWDOWN, IrTX, IrRC, NIRQ, CTLA IOH=-1mA Digital low-level output voltage VOL - - 0.6 V INTR, D0-15, IrDAPWDOWN, IrTX, IrRC, SDA, NIRQ, CTLA IOL=1mA ●Pin Description Pin name I / O Condition of after reset Pin Function Circuit Diagram IrRX I - IrDA Receive Input Pin B EXTIR I - Signal Input Pin in SM2="H" (Input Signal is outputted to IrTX or IrRC) B IrTX O L IrDA and remote control Transmission Output Pin Transmission IrDA when RC_EN= "L" Transmission remote control when RC_EN="H", RC_MODE="H" A D0-15 I / O Input Data I/O Pin C A0-3 I - Address Input Pin B CS I - Chip Select Pin. Low (L) Active The read/write signal goes “Active” in a Low period. B RD I - Read Signal Input Pin. Low (L) Active B WR I - Write Signal Input Pin. Low (L) Active B INTR O H CPU Interrupt Request Output Pin (IrDA controller) The signal goes “Low” when an interrupt condition takes place. A RESET I - Reset Input Pin. Low (L) Active The signal causes the internal register settings, etc. to be initialized. B PWDN I - Power Down Mode Setting. Low (L) Active When set to Low (L), this signal causes the wait status and sets the low dissipation current mode. After the power down mode is removed, RESET=L must set to Low until crystal clock oscillation becomes stable (about 2 or 3 ms). After that RESET must set to High. Take it into consideration that this period depends on the crystal in use. B IrRC O L Remote control transmission Output pin Transmission remote control when RC_EN= "H", RC_MODE= "L" A CTLA O L Control Signal Output Pin A SCL I - Serial clock F SDA I/O Input Serial data I/O Pin G NIRQ O H CPU Interrupt Request Output Pin (Ir remote control) The signal goes “Low” when an interrupt condition takes place. A XIN/CLK48M I - Crystal IN / External CLK Input E XOUT O - Crystal OUT (N.C when external input clock is used) E TEST1-3 I - Test pins (These pins must be GND during normal operation.) D IrDA PWDOWN O H IrDA module control signal output pin These pins must be OPEN for IrDA modules having no power-down pin. A VDD - - Power supply pin - VIO1 - - Interface power supply voltage1 - VIO2 - - Interface power supply voltage2 - GND - - Ground pin - |
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