HD64F7045F28V Datasheet, PDF (77/925 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7040 Series

1.3.3 Pin Functions
Table 1.7 lists the pin functions.
Table 1.7 Pin Functions
Classification Symbol I/O
Power supply V_CC
I
V_SS
I
V_PP
I
Clock
PLLVCC I
PLLVSS I
PLLCAP I
EXTAL
I
XTAL
I
CK
O
System control RES
I
MRES
I
WDTOVF O
BREQ
I
BACK
O
Name
Supply
Ground
Program
supply
PLL supply
PLL ground
PLL
capacitance
External clock
Crystal
System clock
Power-on reset
Manual reset
Watchdog
timer overflow
Bus request
Bus request
acknowledge
Function
Connects to power supply.
Connect all V_CC pins to the system
supply. No operation will occur if
there are any open pins.
Connects to ground.
Connect all V_SS pins to the system
ground. No operation will occur if
there are any open pins.
Connects to the power supply (V_CC)
during normal operation.
When in PROM mode, apply 12.5 V.
On-chip PLL oscillator supply.
On-chip PLL oscillator ground.
On-chip PLL oscillator external
capacitance connection pin.
Connect a crystal oscillator. Also, an
external clock can be input to the
EXTAL pin.
Connect a crystal oscillator.
Supplies the system clock to
peripheral devices.
Power-on reset when low
Manual reset when low
Overflow output signal from WDT
Goes low when external device
requests bus right release
Indicates that bus right has been
released to external device. The
device that output the BREQ signal
receives the BACK signal, notifying
the device that it has obtained the bus
right.
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