Renesas RL78/G1P, Hardware User Manual

Page: 471 / 770

RL78/G1P CHAPTER 11 SERIAL ARRAY UNIT
R01UH0895EJ0100 Rev.1.00 452
Nov 29, 2019
Table 11-4. Baud Rate Setting for UART Reception in SNOOZE Mode
High-speed On-chip
Oscillator (f
IH
)
Baud Rate for UART Reception in SNOOZE Mode
Baud Rate of 4800 bps
Operating clock
(f
MCK
)
SDRmn[15:9] Maximum
Permissible Value
Minimum
Permissible Value
32 MHz ± 1.0%
Note
f
CLK
/2
5
105 2.27% -1.53%
24 MHz ± 1.0%
Note
f
CLK
/2
5
79 1.60% -2.18%
16 MHz ± 1.0%
Note
f
CLK
/2
4
105 2.27% -1.53%
12 MHz ± 1.0%
Note
f
CLK
/2
4
79 1.60% -2.19%
8 MHz ± 1.0%
Note
f
CLK
/2
3
105 2.27% -1.53%
6 MHz ± 1.0%
Note
f
CLK
/2
3
79 1.60% -2.19%
4 MHz ± 1.0%
Note
f
CLK
/2
2
105 2.27% -1.53%
3 MHz ± 1.0%
Note
f
CLK
/2
2
79 1.60% -2.19%
2 MHz ± 1.0%
Note
f
CLK
/2 105 2.27% -1.54%
1 MHz ± 1.0%
Note
f
CLK
105 2.27% -1.57%
Note When the accuracy of the clock frequency of the high-speed on-chip oscillator is ±1.5%, the permissible range
becomes smaller as shown below.

In the case of f
IH
± 1.5%, perform (Maximum permissible value - 0.5%) and (Minimum permissible value +
0.5%) to the values in the above table.
Remark The maximum permissible value and minimum permissible value are permissible values for the baud rate in
UART reception. The baud rate on the transmitting side should be set to fall inside this range.