C8051F002 View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

C8051F002

Mixed-Signal 32KB ISP FLASH MCU Family

Silicon Laboratories 

C8051F000/1/2/5/6/7

C8051F010/1/2/5/6/7

19.1.3. Mode 2: 8-bit Counter/Timer with Auto-Reload

Mode 2 configures Timer 0 and Timer 1 to operate as 8-bit counter/timers with automatic reload of the start value.

The TL0 holds the count and TH0 holds the reload value. When the count in TL0 overflows from all ones to 0x00,

the timer overflow flag TF0 (TCON.5) is set and the counter in TL0 is reloaded from TH0. If enabled, an interrupt

will occur when the TF0 flag is set. The reload value in TH0 is not changed. TL0 must be initialized to the desired

value before enabling the timer for the first count to be correct. When in Mode 2, Timer 1 operates identically to

Timer 0. Both counter/timers are enabled and configured in Mode 2 in the same manner as Mode 0.

Figure 19.2. T0 Mode 2 Block Diagram

SYSCLK

CKCON

TTT

210

MMM

12

0

1

0

TMOD

GCTTGCTT

A / 11A / 00

T

T

E T MM E T MM

1 110 0 010

1

T0

Crossbar

TR0

GATE0

/INT0 Crossbar

TCLK

TL0

(8 bits)

TH0

(8 bits)

Reload

TF1

TR1

TF0

Interrupt

TR0

IE1

IT1

IE0

IT0

Rev. 1.7

140

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