32176 Datasheet, PDF (464/742 Pages) Renesas Technology Corp – 32-BIT RISC SINGLE-CHIP MICROCOMPUTER

12
SERIAL INTERFACE
12.8 Fixed Period Clock Output Function
12.8 Fixed Period Clock Output Function
When using SIO0 or SIO1 in UART mode, the relevant port (P84 or P87) can be switched for use as an SCLKO0
or SCLKO1 pin, respectively. That way, a BRG output clock divided by 2 can be output from the SCLKO pin.
Note: • This clock is output not just during data transfer.
1. Configuration when using BRG/2 clock
TXD
UART
ST
Data
SP
RXD
transmission/reception
ST
Data
SP
SCLKO
Clock output to
peripheral circuits
2. Operation timing
Internal BRG
output
SCLKO output
BRG period
50% 50%
Figure 12.8.1 Example of Fixed Period Clock Output
32176 Group Hardware Manual
Rev.1.10 REJ09B0067-0110 Jun 20.06
12-56