SH7720 Datasheet, PDF (519/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 11 Clock Pulse Generator (CPG)
11.2 Input/Output Pins
Table 11.1 lists the CPG pins and their functions.
Table 11.1 Pin Configuration
Pin Name
Abbreviation I/O
Description
Mode control pins MD0
Input
Set the clock operating mode
MD1
Input
Set the clock operating mode
MD2
Input
Set the clock operating mode
Crystal I/O pins XTAL
(clock input pins) _EXTAL
Output
Input
Connects a crystal resonator
Connects a crystal resonator. Also used to input
an external clock.
Clock I/O pin
CKIO
I/O
Inputs or outputs an external clock
External clock pin EXTAL_USB Input
for USBH/USBF _{XTAL_USB Output}
Inputs an external clock to USBH/USBF (48 MHz)
Note: To prevent device malfunction, the value of the mode control pin is sampled only upon a
power-on reset.
Rev. 3.00 Jan. 18, 2008 Page 457 of 1458
REJ09B0033-0300