SH7147 Datasheet, PDF (34/1108 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 1 Overview
1.4 Pin Functions
Table 1.2 summarizes the pin functions.
Table 1.2 Pin Functions
Classification
Power supply
Symbol
Vcc
I/O Name
I
Power supply
Vss
I
Ground
PVcc
I
Power supply
Clock
PVss
I
Ground
VCL
O Internal step-
down power
supply
PLLVss
EXTAL
I
PLL ground
I
External clock
XTAL
CK
O Crystal
O System clock
Function
Power supply pins
Connect all Vcc pins to the system
power supply. The LSI does not
operate if any Vcc pins are open.
Supply current increases while the
chip is being powered up.
Ground pins
Connect all Vss pins to the system
power supply (0V). The LSI does not
operate if any pins are open.
Power supply for I/O pins
Connect all PVcc pins to the system
power supply. The LSI does not
operate if any pins are open. Supply
current increases while the chip is
being powered up.
Ground for I/O pins
Connect all PVss pins to the system
power supply (0V). The LSI does not
operate if any pins are open.
External capacitance pins for internal
step-down power supply
Connect these pins to Vss via a 0.47
μF capacitor (should be placed close
to the pins).
Ground pin for the on-chip PLL
oscillator
Connected to a crystal resonator.
An external clock signal may also be
input to the EXTAL pin.
Connected to a crystal resonator.
Supplies the system clock to external
devices.
Rev. 3.00 Oct. 06, 2008 Page 10 of 1080
REJ09B0230-0300