SAB80515 Datasheet, PDF (70/270 Pages) Siemens Semiconductor Group – 8-Bit Single-Chip Microcontroller Family

On-Chip Peripheral Components
7.3.3 Mode 2
Mode 2 configures the timer register as an 8-bit counter (TL0) with automatic reload, as shown in
figure 7-23. Overflow from TL0 not only sets TF0, but also reloads TL0 with the contents of TH0,
which is preset by software. The reload leaves TH0 unchanged.
Figure 7-23
Timer/Counter 0, Mode 2: 8-Bit Timer/Counter with Auto-Reload
The same applies to timer/counter 1
Semiconductor Group
70