Appendix Standard Serial I/O Mode (Flash Memory Version)
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Mitsubishi microcomputers
M30220 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
186
Pin
Description
VCC,VSS
Apply a 3.0 - 3.6 V (Note 2) or 4.5 - 5.5 V (Note 3) voltage on the Vcc
pin, and 0 V voltage on the Vss pin.
CNVSS
Connect to VCC when VCC = 4.5V to 5.5 V.
Connect to Vpp (=4.5 V to 5.5 V) when VCC = 3.0V to 3.6 V.
RESET
Reset input pin. While reset is "L" level, a 20 cycle or longer clock
must be input to XIN pin.
XIN
Connect a ceramic resonator or crystal oscillator between XIN and
XOUT pins. To input an externally generated clock, input it to XIN pin
and open XOUT pin.
XOUT
AVCC, AVSS
VREF
Connect AVSS to VSS and AVCC to VCC, respectively.
Enter the reference voltage for AD from this pin.
P00 to P07
Input "H" or "L" level signal or open.
P10 to P17
Input "H" or "L" level signal or open.
P20 to P27
Input "H" or "L" level signal or open.
P30 to P35
Input "H" or "L" level signal or open.
P40 to P47
Input "H" or "L" level signal or open.
P70 to P73,
P75, P76
Input "H" or "L" level signal or open.
P74
Input "H" level signal.
P77
P64 to P67
Input "H" or "L" level signal or open.
P60
Standard serial mode 1: BUSY signal output pin
Standard serial mode 2: Monitors the program operation check
P61
P62
Serial data input pin
P63
Serial data output pin
P80 to P87
Input "H" or "L" level signal or open.
P90 to P97
Input "H" or "L" level signal or open.
P100 to P107
Input "H" or "L" level signal or open.
Name
Power input
CNVSS
Reset input
Clock input
Clock output
Analog power supply input
Reference voltage input
Input port P0
Input port P1
Input port P2
Input port P3
Input port P4
Input port P7
CE input
NMI input
Input port P6
BUSY output
SCLK input
RxD input
TxD output
Input port P8
Input port P9
Input port P10
I/O
I
O
I
O
I
O
I
Standard serial mode 1: Serial clock input pin
Standard serial mode 2: Input "L".
XIN
Connect a ceramic resonator or crystal oscillator between XIN and
XOUT pins. To input an externally generated clock, input it to XIN pin
and open XOUT pin.
XOUT
Clock input
Clock output
I
O
XCIN
Connect a crystal oscillator between XCIN and XCOUT pins. To input
an externally generated clock, input it to XCIN pin and open XCOUT
pin.
XCOUT
Sub-clock input
Sub-clock output
I
O
P50 to P57
Input "H" or "L" level signal or open.
Input port P5
I
Connect this pin to Vcc.
P110 to P117
Input "H" or "L" level signal or open.
Input port P11
I
P120 to P127
Input "H" or "L" level signal or open.
Input port P12
I
P130 to P132
Input "H" or "L" level signal or open.
Input port P13
I
SEG0 to SEG15
Open when not used LCD control circuit.
Segment output
O
COM0 to COM3
Open when not used LCD control circuit.
Common output
O
VL3 to VL1
Input LCD power source. However, do not input the power when the
power supply voltages for VCC and LCD are different.
Power supply input for LCD
C1 to C2
Charge-pump capacitor
pin
Connect a condenser between C1 and C2 when used LCD charge-
pump.
Note 1: About the unused pins, see the example of processing for unused pins in the single-chip mode.
Note 2: The power supply voltage is VCC=2.7 - 3.6 V in the single-chip mode.
Note 3: The power supply voltage is VCC=2.7 - 5.5 V in the single-chip mode.
Pin functions (Flash memory standard serial I/O mode) (Note 1)