deveopmen
Appendix Standard Serial I/O Mode (Flash Memory Version)
Rev.B2 for proof reading
Mitsubishi Microcomputers
M32C/83 group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
401
Pin
Description
V
CC
,V
SS
Apply 4.2V to 5.5V to Vcc pin and 0 V to Vss pin.
CNV
SS
Connect to Vcc pin.
RESET
Reset input pin. While reset is "L" level, a 20 cycle or longer clock
must be input to XIN pin.
X
IN
Connect a ceramic resonator or crystal oscillator between X
IN
and X
OUT
pins. To input an externally generated clock, input it
to X
IN
pin and open X
OUT
pin.
X
OUT
BYTE
Connect this pin to Vcc or Vss.
AV
CC
, AV
SS
V
REF
Connect AVSS to Vss and AVcc to Vcc, respectively.
Enter the reference voltage for A-D converter from this pin.
P0
0
to P0
7
Input "H" or "L" level signal or open.
P1
0
to P1
7
Input "H" or "L" level signal or open.
P2
0
to P2
7
Input "H" or "L" level signal or open.
P3
0
to P3
7
Input "H" or "L" level signal or open.
P4
0
to P4
7
Input "H" or "L" level signal or open.
P5
1
to P5
4,
P5
6,
P5
7
Input "H" or "L" level signal or open.
P5
0
Input "H" level signal.
P5
5
Input "L" level signal.
P6
0
to P6
3
Input "H" or "L" level signal or open.
P6
4
P6
5
P6
6
Serial data input pin
P6
7
P7
0
to P7
7
Input "H" or "L" level signal or open.
P8
0
to P8
4
, P8
6
,
P8
7
P8
5
Input "H" or "L" level signal or open.
P9
0
to P9
7
Input "H" or "L" level signal or open.
P10
0
to P10
7
Input "H" or "L" level signal or open.
Name
Power input
CNV
SS
Reset input
Clock input
Clock output
BYTE
Analog power supply input
Reference voltage input
Input port P0
Input port P1
Input port P2
Input port P3
Input port P4
Input port P5
CE input
EPM input
Input port P6
BUSY output
SCLK input
RxD input
TxD output
Input port P7
Input port P8
Input port P9
Input port P10
I/O
I
I
I
O
I
I
I
I
I
I
I
I
I
I
I
O
I
I
O
I
I
I
I
NMI input
I
Connect this pin to Vcc.
I
Standard serial mode 1: BUSY signal output pin
Standard serial mode 2: Monitors the program operation check
Standard serial mode 1: Serial clock input pin
Standard serial mode 2: Input "L" level signal.
P11
0
to P11
4
Input "H" or "L" level signal or open. (Note)
Input port P11
I
P12
0
to P12
7
Input "H" or "L" level signal or open. (Note)
Input port P12
I
P13
0
to P13
7
Input "H" or "L" level signal or open. (Note)
Input port P13
I
P14
0
to P14
6
Input "H" or "L" level signal or open. (Note)
Input port P14
I
P15
0
to P15
7
Input "H" or "L" level signal or open. (Note)
Input port P15
I
Serial data output pin. When using standard serial mode 1, an
"L" level must be input to TxD pin while the RESET pin is
“
L
”
.
For this reason, this pin should be pulled down. After being reset,
this pin functions as a data output pin. Thus adjust pull-down
resistance value with the system not to affect data transfer.
Note: Port P11 to P15 exist in 144-pin version.
Pin functions (Flash memory standard serial I/O mode)