35
CHAPTER 2 PIN FUNCTION
Preliminary User’s Manual U13420EJ2V0UM00
Pin Name
Input/Output
Function
After Reset
Alternate
Function
ASCK0
Input
Asynchronous serial interface serial clock input
Input
P71
TI00
Input
External count clock input to 16-bit timer (TM0)
Input
P20/TO0
Capture trigger input to TM0 capture registers (CR00, CR01)
TI01
Capture trigger input to TM0 capture register (CR00)
P21
TI50
External count clock input to 8-bit timer (TM50)
P22/TO50
TI51
External count clock input to 8-bit timer (TM51)
P23/TO51
TO0
Output
16-bit timer TM0 output
Input
P20/TI00
TO50
8-bit timer (TM50) output (also used for 8-bit PWM output)
Input
P22/TI50
TO51
8-bit timer (TM51) output (also used for 8-bit PWM output)
P23/TI51
PCL
Output
Clock output (for main system clock and subsystem clock
Input
P70
trimming)
AD0 to AD7
Input/Output
Lower-order address/data bus when expanding external memory
Input
P40 to P47
A8 to A15
Output
High-order address bus when expanding external memory
Input
P50 to P57
RD
Output
Strobe signal output for read operation from external memory
Input
P64
WR
Strobe signal output for write operation from external memory
P65
WAIT
Input
Wait insertion when accessing external memory
Input
P66
ASTB
Output
Strobe output externally latching address information
Input
P67
output to ports 4, 5 to access external memory
ANI0 to ANI7
Input
A/D converter analog input
Input
—
AV
REF
Input
A/D converter reference voltage input (also used for analog
—
—
power supply)
AV
SS
—
A/D converter ground potential. Connect to V
SS0
or V
SS1
—
—
RESET
Input
System reset input
—
—
X1
Input
Crystal connection for main system clock oscillation
—
—
X2
—
—
—
XT1
Input
Crystal connection for subsystem clock oscillation
—
—
XT2
—
—
—
V
DD0
—
Positive power supply
—
—
V
SS0
—
Ground potential
—
—
V
DD1
—
Positive power supply other than port
—
—
V
SS1
—
Ground potential other than port
—
—
IC
—
Internally connected. Connect directly to V
SS0
or V
SS1
—
—
V
PP
—
High-voltage application for program write/verify
—
—
Connect directly to V
SS0
or V
SS1
in normal operating mode.
(2) Non-port Pins (2/2)
Содержание mPD780065 Series
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