P80CL31 datasheet(34/68 Pages) PHILIPS

34 / 68 page

1997 Apr 15

Philips Semiconductors

Product speciﬁcation

Low voltage 8-bit microcontrollers with

UART

P80CL31; P80CL51

14.3.1

INTERRUPT ENABLE REGISTER (IEN0)

Bit values: 0 = interrupt disabled; 1 = interrupt enabled.

Table 11 Interrupt Enable Register (SFR address A8H)

Table 12 Description of IEN0 bits

14.3.2

INTERRUPT ENABLE REGISTER (IEN1)

Bit values: 0 = interrupt disabled; 1 = interrupt enabled.

Table 13 Interrupt Enable Register (SFR address E8H)

Table 14 Description of IEN1 bits

76543210

−−

ES0

ET1

EX1

ET0

EX0

BIT

SYMBOL

DESCRIPTION

general enable/disable control. If EA = 0, no interrupt is enabled; if EA = 1, any

individually enabled interrupt will be accepted

−

reserved

−

reserved

ES0

enable UART SIO interrupt

ET1

enable Timer 1 interrupt (T1)

EX1

enable external interrupt 1

ET0

enable Timer 0 interrupt (T0)

EX0

enable external interrupt 0

76543210

EX9

EX8

EX7

EX6

EX5

EX4

EX3

EX2

BIT

SYMBOL

DESCRIPTION

EX9

enable external interrupt 9

EX8

enable external interrupt 8

EX7

enable external interrupt 7

EX6

enable external interrupt 6

EX5

enable external interrupt 5

EX4

enable external interrupt 4

EX3

enable external interrupt 3

EX2

enable external interrupt 2

P80CL31 Datasheet(PDF) 34 Page - NXP Semiconductors

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