P80C31X2 View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

View to exact match

P80C31X2

80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage (2.7 to 5.5 V), low power, high speed (30/33 MHz)

NXP Semiconductors. 

Philips Semiconductors

80C51 8-bit microcontroller family

4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),

low power, high speed (30/33 MHz)

Product data

P80C3xX2; P80C5xX2;

P87C5xX2

OSC

÷ n*

T2 Pin

C/T2 = 0

C/T2 = 1

CONTROL

TL2

(8-BITS)

TH2

(8-BITS)

TRANSITION

DETECTOR

TR2 RELOAD

RCAP2L

RCAP2H

TF2

T2EX PIN

CONTROL

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

EXEN2

Figure 9. Timer 2 in Auto-Reload Mode (DCEN = 0)

EXF2

TIMER 2

INTERRUPT

SU01623

(DOWN COUNTING RELOAD VALUE)

FFH

FFH

TOGGLE

EXF2

OSC

÷ n*

T2 Pin

C/T2 = 0

TL2

C/T2 = 1

CONTROL

TR2

OVERFLOW

TH2

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

RCAP2L

RCAP2H

(UP COUNTING RELOAD VALUE)

Figure 10. Timer 2 Auto Reload Mode (DCEN = 1)

TF2

COUNT

DIRECTION

1 = UP

0 = DOWN

T2EX PIN

INTERRUPT

SU01624

2003 Jan 24

20

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