UPD784218 Datasheet, PDF (17/92 Pages) NEC – 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS

µPD784218, 784218Y
6.2 Non-Port Pins (2/2)
Pin Name
NMI
INTP0
INTP1
INTP2
INTP3
INTP4
INTP5
INTP6
PCL
BUZ
RTP0 to RTP7
I/O
Input
Output
Output
Output
Alternate Function
P02/INTP2
P00
P01
P02/NMI
P03
P04
P05
P06
P23
P24
P120 to P127
AD0 to AD7
A0 to A7
A8 to A15
A16 to A19
RD
WR
WAIT
ASTB
I/O
Output
Output
Input
Output
P40 to P47
P80 to P87
P50 to P57
P60 to P63
P64
P65
P66
P67
EXA
RESET
X1
X2
XT1
XT2
ANI0 to ANI7
ANO0, ANO1
AVREF0
AVREF1
AVDD
AVSS
VDD
VSS
TEST
Output
Input
Input
—
Input
—
Input
Output
—
P37
—
—
—
P10 to P17
P130, P131
—
Function
Non-maskable interrupt request input
External interrupt request input
Clock output (for trimming main system clock and subsystem clock)
Buzzer output
Real-time output port that outputs data in synchronization with
trigger
Lower address/data bus for expanding memory externally
Lower address bus for expanding memory externally
Middle address bus for expanding memory externally
Higher address bus for expanding memory externally
Strobe signal output for read operation of external memory
Strobe signal output for write operation of external memory
To insert wait state(s) when external memory is accessed
Strobe output to externally latch address information output to ports
4 through 6 and port 8 to access external memory
Status signal output during external memory access
System reset input
Crystal connection for main system clock oscillation
Crystal connection for subsystem clock oscillation
Analog voltage input for A/D converter
Analog voltage output for D/A converter
To apply reference voltage for A/D converter
To apply reference voltage for D/A converter
Positive power supply for A/D converter. Connect to VDD.
GND for A/D converter and D/A converter. Connect to VSS.
Positive power supply
GND
Connect directly to VSS or pull down (this pin is for the IC test). For
the pull-down connection, use of a resistor whose resistance is
between 470 Ω and 10 kΩ is recommended.
Data Sheet U12304EJ2V0DS00
17