SH7263 Datasheet, PDF (137/1862 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 4 Clock Pulse Generator (CPG)
4.2 Input/Output Pins
Table 4.1 lists the clock pulse generator pins and their functions.
Table 4.1 Pin Configuration and Functions of the Clock Pulse Generator
Pin Name Symbol I/O
Function
(Clock Operating
Mode 0, 1)
Function
(Clock Operating
Mode 2)
Function
(Clock Operating
Mode 3)
Mode
MD_
control pins CLK0
Input Sets the clock operating mode.
MD_
CLK1
Input Sets the clock operating mode.
Crystal
XTAL
input/output
pins (clock
input pins)
Output Connected to the
crystal resonator.
(Leave this pin open
when the crystal
resonator is not in
use.)
Leave this pin open.
Leave this pin open.
EXTAL
Input
Connected to the Fix this pin (pull up, Fix this pin (pull up,
crystal resonator or pull down, connect to pull down, connect to
used to input external power supply, or
power supply, or
clock.
connect to ground). connect to ground).
Clock
CKIO
input/output
pin
I/O Clock output pin.
Clock input pin
Clock output pin
Crystal
USB_X1
input/output
pins for
USB
(clock input
pins)
Input
Connected to the Connected to the Connected to the
crystal resonator to crystal resonator to crystal resonator to
input the clock for input the clock for input the clock for
USB only, or used to USB only, or used to both USB and the
input external clock. input external clock. LSI, or used to input
When USB is not When USB is not external clock.
used, this pin should used, this pin should
be fixed (pulled up, be fixed (pulled up,
pulled down,
pulled down,
connected to power connected to power
supply, or connected supply, or connected
to ground).
to ground).
USB_X2
Output Connected to the
crystal resonator for
USB.
(Leave this pin open
when the crystal
resonator is not in
use.)
Connected to the
crystal resonator for
USB.
(Leave this pin open
when the crystal
resonator is not in
use.)
Connected to the
crystal resonator for
both USB and the
LSI.
(Leave this pin open
when the crystal
resonator is not in
use.)
Rev. 2.00 Mar. 14, 2008 Page 103 of 1824
REJ09B0290-0200