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CHAPTER 14 SERIAL INTERFACE UART6
User’s Manual U19780EJ2V0UD
396
Table 14-4. Set Value of TPS63 to TPS60
Base Clock (f
XCLK6
) Selection
Note 1
TPS63 TPS62 TPS61 TPS60
f
PRS
=
2 MHz
f
PRS
=
5 MHz
f
PRS
=
10 MHz
f
PRS
=
20 MHz
0 0 0 0
f
PRS
Note 2
2 MHz
5 MHz
10 MHz
20 MHz
Note 3
0 0 0 1
f
PRS
/2
1 MHz
2.5 MHz
5 MHz
10 MHz
0 0 1 0
f
PRS
/2
2
500 kHz
1.25 MHz 2.5 MHz
5 MHz
0 0 1 1
f
PRS
/2
3
250 kHz
625 kHz
1.25 MHz 2.5 MHz
0 1 0 0
f
PRS
/2
4
125 kHz
312.5 kHz
625 kHz
1.25 MHz
0 1 0 1
f
PRS
/2
5
62.5 kHz
156.25 kHz 312.5 kHz 625 kHz
0 1 1 0
f
PRS
/2
6
31.25 kHz
78.13 kHz
156.25 kHz 312.5 kHz
0 1 1 1
f
PRS
/2
7
15.625 kHz 39.06 kHz
78.13 kHz 156.25 kHz
1 0 0 0
f
PRS
/2
8
7.813 kHz
19.53 kHz
39.06 kHz 78.13 kHz
1 0 0 1
f
PRS
/2
9
3.906 kHz
9.77 kHz
19.53 kHz 39.06 kHz
1 0 1 0
f
PRS
/2
10
1.953 kHz
4.88 kHz
9.77 kHz
19.53 kHz
1 0 1 1
TM50
output
Note 4
Other than above
Setting prohibited
Notes 1.
The frequency that can be used for the peripheral hardware clock (f
PRS
) differs depending on the
power supply voltage.
Supply Voltage
Use frequency range of peripheral hardware clock (f
PRS
)
2.7 V
≤
V
DD
≤
5.5 V
f
PRS
≤
20 MHz
1.8 V
≤
V
DD
< 2.7 V
f
PRS
≤
5 MHz
(The values shown in the table above are those when f
PRS
= f
XH
(XSEL = 1).)
2.
If the peripheral hardware clock (f
PRS
) operates on the internal high-speed oscillation clock (f
RH
)
(XSEL = 0), when 1.8 V
≤
V
DD
< 2.7 V, the setting of TPS63 = TPS62 = TPS61 = TPS60 = 0 (base
clock: f
PRS
) is prohibited.
3.
This is settable only if 4.0 V
≤
V
DD
≤
5.5 V.
4.
Note the following points when selecting the TM50 output as the base clock.
•
Mode in which the count clock is cleared and started upon a match of TM50 and CR50
(TMC506 = 0)
Start the operation of 8-bit timer/event counter 50 first and then enable the timer F/F inversion
operation (TMC501 = 1).
•
PWM mode (TMC506 = 1)
Start the operation of 8-bit timer/event counter 50 first and then set the count clock to make the
duty = 50%.
It is not necessary to enable (TOE50 = 1) TO50 output in any mode.