Fixed Period Clock Output Function - Mitsubishi Electric M32R Series User Manual

12

12.8 Fixed Period Clock Output Function

When using SIO0, SIO1, SIO4 or SIO5 in UART mode, you can choose the relevant port (P84, P87,
P65 or P66) to function as the SCLKO0, SCLKO1, SCLKO4 or SCLKO5 pin. In this way, a clock
derived from BRG output by dividing it by 2 can be output from the SCLKO pin.
Note : This clock is output all the time, not just during data transfer.
1. Configuration when using BRG/2 clock
TXD
RXD
SCLKO
2. Operation timing
Internal BRG
output
SCLKO output
Figure 12.8.1 Example of Fixed Period Clock Output
UART transmit/receive
Clock output to
peripheral circuits
BRG period
50% 50%
12-61
12.8 Fixed Period Clock Output Function
Data
ST
ST Data
SERIAL I/O
SP
SP
Ver.0.10