DS80C310_01 Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS80C310_01

High-Speed Micro

Dallas Semiconductor -> Maxim Integrated 

DS80C310

POWER ON RESET

The DS80C310 will hold itself in reset during a power-up until 65,536 clock cycles have elapsed. The

power-on reset used by the DS80C310 differs somewhat from other members of the High-Speed

Microcontroller family. The crystal oscillator may start anywhere between 1.0V and 4.5V but is not

specified. This eliminates the need for an RC reset circuit. For voltage-specific precision brownout

detection, an external component will be needed. When the device goes through a power-on reset, the

POR flag will be set in the WDCON (D8h) register at bit 6.

INTERRUPTS

The DS80C310 provides 10 interrupt sources with two priority levels. Software can assign high or low

priority to all sources. All interrupts that are new to the 8051 have a lower natural priority than the

originals.

INTERRUPT SOURCES AND PRIORITIES Table 4

NAME

DESCRIPTION

VECTOR

INT0

External Interrupt 0

03h

TF0

Timer 0

0Bh

INT1

External Interrupt 1

13h

TF1

Timer 1

1Bh

SCON

T1 or R1 from the serial port

23h

TF2

Timer 2

2Bh

INT2

External Interrupt 2

43h

INT3

External Interrupt 3

4Bh

INT4

External Interrupt 4

53h

INT5

External Interrupt 5

5Bh

NATURAL

PRIORITY

1

2

3

4

5

6

7

8

9

10

10 of 23

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