SH7052 Datasheet, PDF (36/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

Table 1.2 Pin Functions (cont)
Type
Clock
Symbol
PLLV_CC
Pin No.
32
PLLV_SS
34
PLLCAP 33
EXTAL
24
XTAL
26
CK
20
System control RES
30
WDTOVF 72
BREQ
17
BACK
16
I/O
Input
Input
Input
Input
Input
Output
Input
Output
Input
Output
Name
PLL power
supply
PLL ground
PLL
capacitance
External clock
Crystal
System clock
Power-on
reset
Watchdog
timer overflow
Bus request
Bus request
acknowledge
Function
On-chip PLL oscillator power
supply.
For power supply connection,
see section 4, Clock Pulse
Generator.
On-chip PLL oscillator ground.
For power supply connection,
see section 4, Clock Pulse
Generator.
On-chip PLL oscillator
external capacitance
connection pin.
For external capacitance
connection, see section 4,
Clock Pulse Generator.
For connection to a crystal
resonator. An external clock
source can also be connected
to the EXTAL pin.
For connection to a crystal
resonator.
Supplies the system clock to
peripheral devices.
Executes a power-on reset
when driven low.
WDT overflow output signal.
Driven low when an external
device requests the bus.
Indicates that the bus has
been granted to an external
device. The device that output
the BREQ signal recognizes
that the bus has been
acquired when it receives the
BACK signal.
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