Philips Semiconductors

Product data

P87CL52X2/54X2

80C51 8-bit microcontroller family

8K/16K OTP 256 bytes RAM ROMless low voltage

(1.8 V to 3.3 V), low power, high speed (33 MHz)

2003 May 14

18

Table 5. Timer 2 as a Timer

MODE

T2CON

MODE

INTERNAL CONTROL (Note 1)

EXTERNAL CONTROL (Note 2)

16-bit Auto-Reload

00H

08H

16-bit Capture

01H

09H

Baud rate generator receive and transmit same baud rate

34H

36H

Receive only

24H

26H

Transmit only

14H

16H

Table 6. Timer 2 as a Counter

MODE

TMOD

MODE

INTERNAL CONTROL (Note 1)

EXTERNAL CONTROL (Note 2)

16-bit

02H

0AH

Auto-Reload

03H

0BH

NOTES:

1. Capture/reload occurs only on timer/counter overflow.

2. Capture/reload occurs on timer/counter overflow and a 1-to-0 transition on T2EX (P1.1) pin except when Timer 2 is used in the baud rate

generator mode.