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4.2 Pins Other Than Port Pins (2/2)
Pin Name
I/O
WAIT
Input
P66
ASTB
Output
P67
EXA
Output
P37
RESET
Input
X1
Input
X2
—
XT1
Input
XT2
—
ANI0-ANI7
Input
P10-P17
ANO0, ANO1
Output
P130, P131
AV
—
REF1
AV
DD
AV
SS
V
DD0
V
SS0
V
DD1
V
SS1
TEST
V
V
TEST
PP
12
Alternate Function
To insert wait state(s) when external memory is accessed
Strobe output to externally latch address information output to ports
4 through 6 to access external memory
External access status output
—
System reset input
—
To connect main system clock oscillation crystal
—
To connect subsystem clock oscillation crystal
Analog voltage input for A/D converter
Analog voltage output for D/A converter
—
To apply reference voltage for D/A converter
Positive power supply for A/D converter. Connected to V
GND for A/D converter and D/A converter. Connected to V
Positive power supply for port block
GND potential for port block
Positive power supply (except port block)
GND potential (except port block)
Directly connect this pin to V
PP
Sets flash memory programming mode.
To apply a high voltage when program is written or verified.
µ PD78F4225Y
Function
.
DD0
SS0
(this pin is for IC test).
SS
.
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