MICROPROCESSOR AND MICROCONTROLLER

INTRODUCTION TO MICROPEOCESSOR

MODEL OF MICROPROCESSOR

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Which timer is attributed to the register pair of RCAP2H & RCAP2L for capture mode operation?

A	Timer 0
B	Timer 1
C	Timer 2
D	Timer 3

Explanation:

Detailed explanation-1: -TMOD (Timer Mode) The TMOD or Timer Mode register or SFR is used to set the Operating Modes of the Timers T0 and T1. The lower four bits are used to configure Timer0 and the higher four bits are used to configure Timer1.

Detailed explanation-2: -Counters and Timers in 8051 microcontroller contain two special function registers: TMOD (Timer Mode Register) and TCON (Timer Control Register), which are used for activating and configuring timers and counters.

Detailed explanation-3: -It is 8-bit register. When 8051 is powered up, SMOD is zero.By setting the SMOD, baud rate can be doubled. If SMOD = 0 (which is its value on reset), the baud rate is 1/64 the oscillator frequency. If SMOD = 1, the baud rate is 1/32 the oscillator frequency.

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