71M6541DSLASHFSLASHG datasheet(42/166 Pages) MAXIM

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71M6541D/F/G and 71M6542F/G Data Sheet

Rev 5

•

The interrupt priority registers: IP0 and IP1 (see Table 36).

Table 26: The IEN0 Bit Functions (SFR 0xA8)

Bit

Symbol

Function

IEN0[7]

EAL

EAL = 0 disables all interrupts.

IEN0[6]

–

Not used.

IEN0[5]

–

Not used.

IEN0[4]

ES0

ES0 = 0 disables serial channel 0 interrupt.

IEN0[3]

ET1

ET1 = 0 disables timer 1 overflow interrupt.

IEN0[2]

EX1

EX1 = 0 disables external interrupt 1: DIO status change

IEN0[1]

ET0

ET0 = 0 disables timer 0 overflow interrupt.

IEN0[0]

EX0

EX0 = 0 disables external interrupt 0: DIO status change

Table 27: The IEN1 Bit Functions (SFR 0xB8)

Bit

Symbol

Function

IEN1[7]

–

Not used.

IEN1[6]

–

Not used.

IEN1[5]

EX6

EX6 = 0 disables external interrupt 6:

XFER_BUSY, RTC_1S, RTC_1M or RTC_T

IEN1[4]

EX5

EX5 = 0 disables external interrupt 5: EEPROM or SPI

IEN1[3]

EX4

EX4 = 0 disables external interrupt 4: VSTAT

IEN1[2]

EX3

EX3 = 0 disables external interrupt 3: CE_BUSY

IEN1[1]

EX2

EX2 = 0 disables external interrupt 2:

XPULSE, YPULSE, WPULSE or VPULSE

IEN1[0]

–

Not used.

Table 28: The IEN2 Bit Functions (SFR 0x9A)

Bit

Symbol

Function

IEN2[0]

ES1

ES1 = 0 disables the serial channel 1 interrupt.

Table 29: 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: DIO status changed

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: DIO status changed

TCON[0]

IT0

External interrupt 0 type control bit:

0 = interrupt on low level.

1 = interrupt on falling edge.

71M6541D/F/G Datasheet(PDF) 42 Page - Maxim Integrated Products

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