Tutorial Microcontroller MCS-51 ATMEL ISP

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3.3. Timer/ Counter Mode 2 : 8 bit Auto Reload



Mode 2 configures the Timer register as an 8-bit Counter (TL1) with automatic reload, as shown in Figure 9. Overflow from TL1 not only sets TF1, but also reloads TL1 with the contents of TH1, which is preset by software. The reload leaves TH1 unchanged.

Microcontroller Timer Counter Mode 2

Figure 3.3. Timer/Counter Mode 1: 16-Bit Counter

 

Mode 2 operation is the same for Timer/Counter 0.

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