SM39A16M1
8-Bit Micro-controller
16KB with ISP Flash
& 1K+256B RAM embedded
8.2 Compare function
In the four independent comparators, the value stored in any compare/capture register is compared with the contents
of the timer register. The compare modes 0 and 1 are selected by bits C0CAMx . In both compare modes, the results
of comparison arrives at Port 1 within the same machine cycle in which the internal compare signal is activated.
8.2.1 Compare Mode 0
In mode 0, when the value in Timer 2 equals the value of the compare register, the output signal changes from low to
high. It goes back to a low level on timer overflow. In this mode, writing to the port will have no effect, because the
input line from the internal bus and the write-to-latch line are disconnected. As shown in Fig. 8-5 illustrates the function
of compare mode 0.
Contents of
Timer 2
CRC or CCx
Reload value
CCx Output
Timer 2 = CCx value
Timer 2 overflow
Fig. 8-5: Compare mode 0 function
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M069
Ver C SM39A16M1 7/31/2013
- 46 -
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
