P89C60X2BASLASH00 datasheet(22/56 Pages) PHILIPS

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Philips Semiconductors

Product data

P89C60X2/61X2

80C51 8-bit Flash microcontroller family

64KB Flash, 512B/1024B RAM

2003 Sep 11

IT0

BIT

SYMBOL

FUNCTION

TCON.7

TF1

Timer 1 overflow flag. Set by hardware on Timer/Counter overflow.

Cleared by hardware when processor vectors to interrupt routine, or clearing the bit in software.

TCON.6

TR1

Timer 1 Run control bit. Set/cleared by software to turn Timer/Counter on/off.

TCON.5

TF0

Timer 0 overflow flag. Set by hardware on Timer/Counter overflow.

Cleared by hardware when processor vectors to interrupt routine, or by clearing the bit in software.

TCON.4

TR0

Timer 0 Run control bit. Set/cleared by software to turn Timer/Counter on/off.

TCON.3

IE1

Interrupt 1 Edge flag. Set by hardware when external interrupt edge detected.

Cleared when interrupt processed.

TCON.2

IT1

Interrupt 1 type control bit. Set/cleared by software to specify falling edge/low level triggered

external interrupts.

TCON.1

IE0

Interrupt 0 Edge flag. Set by hardware when external interrupt edge detected.

Cleared when interrupt processed.

TCON.0

IT0

Interrupt 0 Type control bit. Set/cleared by software to specify falling edge/low level

triggered external interrupts.

SU01516

IE0

IT1

IE1

TR0

TF0

TR1

TF1

Bit Addressable

TCON

Address = 88H

Reset Value = 00H

321

Figure 5. Timer/Counter 0/1 Control (TCON) Register

TLn

(8 Bits)

TFn

Interrupt

Control

C/T = 0

C/T = 1

THn

(8 Bits)

Reload

INTn Pin

Timer n

Gate bit

TRn

SU01619

OSC

÷ d*

Tn Pin

*d = 6 in 6-clock mode; d = 12 in 12-clock mode.

Figure 6. Timer/Counter 0/1 Mode 2: 8-Bit Auto-Reload

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