NEC 78K0 Series User Manual page 35

(2) Non-port pins (2/2)
Function Name I/O
TO50 Output
TO51
TOH0
TOH1
PCL Output
BUZ Output
ANI0 to ANI7 Input
AV Input
REF
−
AV
SS
KR0 to KR7 Input
−
REGC
RESET Input
EXLVI Input
X1 Input
−
X2
EXCLK Input
XT1 Input
−
XT2
EXCLKS Input
−
V
DD
−
EV
DD
−
V
SS
−
EV
SS
−
FLMD0
Note
OCD0A
Input
Note
OCD1A
Note
−
OCD0B
Note
OCD1B
µ
Note PD78F0537D only
CHAPTER 2 PIN FUNCTIONS
Function
8-bit timer/event counter 50 output
8-bit timer/event counter 51 output
8-bit timer H0 output
8-bit timer H1 output
Clock output (for trimming of high-speed system clock,
subsystem clock)
Buzzer output
A/D converter analog input
A/D converter reference voltage input and positive power
supply for P20 to P27 and A/D converter
A/D converter ground potential. Make the same potential as
EV or V .
SS SS
Key interrupt input
Connecting regulator output (2.5 V) stabilization capacitance
for internal operation.
Connect to V via a capacitor (0.47
SS
System reset input
Potential input for external low-voltage detection
Connecting resonator for main system clock
External clock input for main system clock
Connecting resonator for subsystem clock
External clock input for subsystem clock
Positive power supply (P121 to P124 and except for ports)
Positive power supply for ports (except for P20 to P27 and
P121 to P124)
Ground potential (P121 to P124 and except for ports)
Ground potential for ports (except for P20 to P27 and P121 to
P124)
Flash memory programming mode setting
Connection for on-chip debug mode setting pins
µ
( PD78F0537D only)
Preliminary User's Manual U17260EJ3V1UD
After Reset
Input port
Input port
Input port
Analog input
Input port
µ
F: target).
Input port
Input port
Input port
Input port
Input port
Input port
Input port
Alternate Function
P17/TI50
P33/TI51/INTP4
P15
P16/INTP5
P140/INTP6
P141/INTP7
P20 to P27
− −
− −
P70 to P77
− −
− −
P120/INTP0
Note
P121/OCD0A
P122/EXCLK/
Note
OCD0B
P122/X2/
Note
OCD0B
P123
P124/EXCLKS
P124/XT2
− −
− −
− −
− −
− −
P121/X1
P31/INTP2
P122/X2/EXCLK
P32/INTP3
35