71M6532DSLASHF datasheet(31/121 Pages) MAXIM

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FDS 6531/6532 005

Data Sheet 71M6531D/F-71M6532D/F

Rev 2

Table 25: 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_1SEC, WD_NROVF

IEN1[4]

EX5

EX5 = 0 disables external interrupt 5: EEPROM_BUSY

IEN1[3]

EX4

EX4 = 0 disables external interrupt 4: PLL_OK (rise), PLL_OK (fall)

IEN1[2]

EX3

EX3 = 0 disables external interrupt 3: CE_BUSY

IEN1[1]

EX2

EX2 = 0 disables external interrupt 2: FWCOL0, FWCOL1, SPI

IEN1[0]

–

Not Used.

Table 26: The IEN2 Bit Functions (SFR 0x9A)

Bit

Symbol

Function

IEN2[0]

ES1

ES1 = 0 disables the serial channel 1 interrupt.

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.

71M6532D/F Datasheet(PDF) 31 Page - Maxim Integrated Products

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