Usage Notes; Operation Of Tpc Output Pins; Note On Non-Overlapping Output - Hitachi H8/3022 Hardware Manual

9.4 Usage Notes

9.4.1 Operation of TPC Output Pins

TP to TP * are multiplexed with ITU pin functions. When ITU output is enabled, the
0 15
corresponding pins cannot be used for TPC output. The data transfer from NDR bits to DR bits
takes place, however, regardless of the usage of the pin.
Pin functions should be changed only under conditions in which the output trigger event will not
occur.
Note: * Since this LSI does not have a TP

9.4.2 Note on Non-Overlapping Output

During non-overlapping operation, the transfer of NDR bit values to DR bits takes place as
follows.
1. NDR bits are always transferred to DR bits at compare match A.
2. At compare match B, NDR bits are transferred only if their value is 0. Bits are not transferred
if their value is 1.
Figure 9-9 illustrates the non-overlapping TPC output operation.
TPC output pin
pin, the TP
14
DDR NDER
Q
Q
Figure 9-9 Non-Overlapping TPC Output
signal cannot be output to the outside.
14
Q
C
DR D
Compare match A
Compare match B
Q NDR D
305