UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 394

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

392
Address: FF39H After reset: 00H R/W
CKSR61
Caution Make sure POWER61 = 0 when rewriting TPS631 to TPS601.
Remarks 1. f
Symbol
Notes 1.
2. TMC506: Bit 6 of 8-bit timer mode control register 50 (TMC50)
TPS631
TMC501: Bit 1 of TMC50
PRS
7
0
0
0
0
0
0
0
0
0
1
1
1
1
2.
: Peripheral hardware clock frequency
If the peripheral hardware clock (f
= 1), the f
Note the following points when selecting the TM50 output as the base clock.
Start the operation of 8-bit timer/event counter 50 first and then enable the timer F/F inversion
operation (TMC501 = 1).
It is not necessary to enable the TO50 pin as a timer output pin in any mode.
Figure 12-14. Format of Clock Selection Register 61 (CKSR61)
V
V
Mode in which the count clock is cleared and started upon a match of TM50 and CR50
(TMC506 = 0)
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%.
DD
DD
TPS621
CHAPTER 12 SERIAL INTERFACES UART60 AND UART61
Other than above
= 4.0 to 5.5 V: f
= 2.7 to 4.0 V: f
6
0
0
0
0
0
1
1
1
1
0
0
0
0
PRS
operating frequency varies depending on the supply voltage.
Preliminary User’s Manual U19748EJ1V0UD
TPS611
5
0
0
0
1
1
0
0
1
1
0
0
1
1
PRS
PRS
20 MHz
10 MHz
TPS601
0
4
0
1
0
1
0
1
0
1
0
1
0
1
PRS
) operates on the high-speed system clock (f
f
f
f
f
f
f
f
f
f
f
f
TM50 output
Setting prohibited
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
TPS631
/2
/2
/2
/2
/2
/2
/2
/2
/2
/2
2
3
4
5
6
7
8
9
10
3
2 MHz
1 MHz
500 kHz
250 kHz
125 kHz
62.5 kHz
31.25 kHz 78.13 kHz 156.25 kHz 312.5 kHz
15.625 kHz 39.06 kHz 78.13 kHz 156.25 kHz
7.813 kHz 19.53 kHz 39.06 kHz 78.13 kHz
3.906 kHz 9.77 kHz
1.953 kHz 4.88 kHz
2 MHz
f
Base clock (f
PRS
Note 2
=
TPS621
2
5 MHz
2.5 MHz
1.25 MHz
625 kHz
312.5 kHz 625 kHz
156.25 kHz 312.5 kHz 625 kHz
5 MHz
f
PRS
XCLK6
=
) selection
TPS611
10 MHz
5 MHz
2.5 MHz
1.25 MHz
19.53 kHz 39.06 kHz
9.77 kHz
1
10 MHz
f
PRS
Note 1
=
IN
TPS601
20 MHz
10 MHz
5 MHz
2.5 MHz
1.25 MHz
19.53 kHz
) (XSEL
20 MHz
f
PRS
0
=