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71M6534 Datasheet(PDF) 32 Page - Maxim Integrated Products |
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71M6534 Datasheet(HTML) 32 Page - Maxim Integrated Products |
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32 / 132 page  71M6533/G/H and 71M6534/H Data Sheet FDS_6533_6534_004 32 Rev 2 Table 27: TCON Bit Functions (SFR 0x88) Bit Symbol Function TCON[7] TF1 Timer 1 overflow flag. TCON[6] TR1 Not used for interrupt control. TCON[5] TF0 Timer 0 overflow flag. TCON[4] TR0 Not used for interrupt control. TCON[3] IE1 External interrupt 1 flag. TCON[2] IT1 External interrupt 1 type control bit: 0 = interrupt on low level. 1 = interrupt on falling edge. TCON[1] IE0 External interrupt 0 flag TCON[0] IT0 External interrupt 0 type control bit: 0 = interrupt on low level. 1 = interrupt on falling edge. Table 28: The T2CON Bit Functions (SFR 0xC8) Bit Symbol Function T2CON[7] – Not used. T2CON[6] I3FR Polarity control for external interrupt 3: CE_BUSY 0 = falling edge. 1 = rising edge. T2CON[5] I2FR Polarity control for external interrupt 2: FWCOL0, FWCOL1, SPI 0 = falling edge. 1 = rising edge. T2CON[4:0] – Not used. Table 29: The IRCON Bit Functions (SFR 0xC0) Bit Symbol Function IRCON[7] – Not used IRCON[6] – Not used IRCON[5] IEX6 1 = External interrupt 6 occurred and has not been cleared. IRCON[4] IEX5 1 = External interrupt 5 occurred and has not been cleared. IRCON[3] IEX4 1 = External interrupt 4 occurred and has not been cleared. IRCON[2] IEX3 1 = External interrupt 3 occurred and has not been cleared. IRCON[1] IEX2 1 = External interrupt 2 occurred and has not been cleared. IRCON[0] – Not used. TF0 and TF1 (Timer 0 and Timer 1 overflow flags) will be automatically cleared by hardware when the service routine is called (Signals T0ACK and T1ACK – port ISR – active high when the service routine is called). |
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