Microcontroller

How many timers in 8051?

• 1

• 2

• 3

The timers of the 8051 are

• 4-bit

• 8-bit

• 16-bit

The registers of Timer 1 are accessed as

• TL1 & TH1

• TL0 & TH0

• TL0 & TH1

The TMOD register is a(n)

• 4- bit register

• 8- bit register

• 16- bit register

TMOD is a bit-addressable register. True or False.

• True

• False

Find the TMOD value for both Timer 0 and Timer 1, mode 2, software start/stop (gate=0), with the clock coming from the 8051's crystal.

• 00010001b

• 00100010b

• 00000001b

Indicate the size of the timer for mode 0

• 8 -bit

• 13 -bit

• 16 -bit

Indicate the rollover value (in hex and decimal) for the timer for mode 1

• 1FFFh (8191)

• FFFFh (65535)

• FFh (255)

Both Timer 0 and Timer 1 have their own TF. True or False.

• True

• False

Both Timer 0 and Timer 1 have their own timer start (TR). True or False.

• True

• False