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MCP2003-E/SN 데이터시트(PDF) 6 Page - Microchip Technology |
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MCP2003-E/SN 데이터시트(HTML) 6 Page - Microchip Technology |
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6 / 34 page ![]() MCP2003/4/3A/4A DS20002230F-page 6 2010-2014 Microchip Technology Inc. FIGURE 1-5: OPERATIONAL MODES STATE DIAGRAM – MCP2004A TABLE 1-1: OVERVIEW OF OPERATIONAL MODES State Transmitter Receiver VREN Operation Comments POR OFF OFF OFF Check CS, if low then proceed to Ready mode; If high, transitions to either TOFF or Operation mode, depending on TXD (2003/A), or TXD and FAULT/TXE (2004/A). VBB > VBB(MIN) and Internal Supply stable Ready OFF ON ON If CS is high level, then proceed to Operation or TXOFF mode. Bus Off state Operation ON ON ON If CS is low level, then proceed to Power- Down; If FAULT/TXE low level, then proceed to Transmitter Off mode. Normal Operation mode Power-Down OFF Activity Detect OFF On CS high level, proceed to Ready mode then proceed to either Operation mode or TXOFF. MCP2003/2003A: Falling edge on WAKE will put the device into Ready mode. MCP2003/MCP2004: falling edge on LIN bus will put the device into Ready mode. MCP2003A/MCP2004A: rising edge on LIN bus will put the device into Ready mode. Low-Power mode Transmitter Off OFF ON ON If CS is low level, then proceed to Power- Down mode; If FAULT/TXE and TXD high, then proceed to Operation mode FAULT/TXE only available on MCP2004/2004A POR VREN OFF RX OFF TX OFF VBAT > 5.5V Ready VREN ON RX ON TX OFF TOFF Mode VREN ON RX ON TX OFF Operation Mode VREN ON RX ON TX ON POWER DOWN VREN OFF RX OFF TX OFF CS = 1& (TXE = 0 or TXD = 0) CS = 1& TXD = 1 & TXE = 1 CS = 1& TXD = 1& TXE = 1& No Fault Fault (thermal or timeout) or FAULT/TXE = 0 CS = 0 Rising edge on LIN or CS = 1 CS = 0 |
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