Renesas R5S72621 User Manual
Section 5 Clock Pulse Generator
Page 126 of 2108
R01UH0134EJ0400 Rev. 4.00
Sep
24,
2014
SH7262 Group, SH7264 Group
5.6
Usage of the Clock Pins
For the connection of a crystal resonator or the input of a clock signal, this LSI circuit has the pins
listed in table 5.6. With regard to these pins, take care on the following points. Furthermore, Xin
pin and Xout pin are used in this section to refer to the pins listed in the table.
listed in table 5.6. With regard to these pins, take care on the following points. Furthermore, Xin
pin and Xout pin are used in this section to refer to the pins listed in the table.
Table 5.6
Clock Pins
Xin Pins
(Used for Connection of a Crystal Resonator
and Input of External Clock Signals)
(Used for Connection of a Crystal Resonator
and Input of External Clock Signals)
Xout Pins
(Used for Connection of a Crystal Resonator)
(Used for Connection of a Crystal Resonator)
EXTAL XTAL
USB_X1 USB_X2
AUDIO_X1 AUDIO_X2
RTC_X1 RTC_X2
5.6.1
In the Case of Inputting an External Clock
An example of the connection of an external clock is shown in figure 5.2. In cases where the Xout
pin is left open state, take the parasitic capacitance as less than 10 pF.
pin is left open state, take the parasitic capacitance as less than 10 pF.
Xin
Xout
This LSI
External clock input
Open state
Figure 5.2 Example of the Connection of an External Clock