
16
Mitsubishi microcomputers
M16C / 62T Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Reset
Table 1.6.1 shows the statuses of the other pins while the RESET pin level is “L”. Figures 1.6.3 and 1.6.4
show the internal status of the microcomputer immediately after the reset is cancelled.
Table 1.6.1. Pin status when RESET pin level is “L”
Status
CNV
SS
= V
CC
CNV
SS
= V
SS
BYTE = V
SS
(Note 1)
BYTE = V
CC
Pin
name
P0
P1
P2, P3, P4
0
to P4
3
P4
4
P4
5
to P4
7
P5
0
P5
1
P5
2
P5
3
P5
4
P5
5
P5
6
P5
7
P6, P7, P8
0
to P8
4
,
P8
6
, P8
7
, P9, P10
Note 1: In M30623(80-pin package), the BYTE signal has no external pin, and is internally connected to the CNV
SS
signal.
Accordingly, in the microprocessor mode, BYTE = CNV
SS
= V
CC
.
Note 2: In M30623(80-pin package), Port P1, P4
4
to P4
7
, P7
2
to P7
5
and P9
1
have no external pin, and are internally the
above conditions. After reset, set these ports to one of the following conditions.
Be output mode, and output “L” level.
Pull-up resister is on.
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
(pull-up resistor is on)
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
Data input (floating)
Data input (floating)
Address output (undefined)
BCLK output
ALE output (“L” level is output)
CS0 output (“H” level is output)
WR output (“H” level is output)
RD output (“H” level is output)
RDY input (floating)
Input port (floating)
BCLK output
BHE output (undefined)
HLDA output (The output value
depends on the input to the
HOLD pin)
HOLD input (floating)
Data input (floating)
Address output (undefined)
CS0 output (“H” level is output)
Input port (floating)
(pull-up resistor is on)
Input port (floating)
Input port (floating)
RDY input (floating)
ALE output (“L” level is output)
HOLD input (floating)
HLDA output (The output value
depends on the input to the
HOLD pin)
RD output (“H” level is output)
BHE output (undefined)
WR output (“H” level is output)
Input port (floating)
(pull-up resistor is on)