Table 1.5.1 shows the statuses of the other pins while the RESET pin level is 鈥淟鈥? Figures 1.5.3 and 1.5.4
show the internal status of the microcomputer immediately after the reset is cancelled.
Table 1.5.1. Pin status when RESET pin level is 鈥淟鈥?/div>
Status
Pin name
P0
P1
P2, P3, P4
0
to P4
3
P4
4
P4
5
to P4
7
CNV
SS
= V
CC
CNV
SS
= V
SS
BYTE = V
SS
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
Data input (floating)
Data input (floating)
Address output (undefined)
CS0 output (鈥淗鈥?level is output)
Input port (floating)
(pull-up resistor is on)
WR output (鈥淗鈥?level is output)
BHE output (undefined)
RD output (鈥淗鈥?level is output)
BCLK output
BYTE = V
CC
Data input (floating)
Input port (floating)
Address output (undefined)
CS0 output (鈥淗鈥?level is output)
Input port (floating)
(pull-up resistor is on)
WR output (鈥淗鈥?level is output)
BHE output (undefined)
RD output (鈥淗鈥?level is output)
BCLK output
P5
0
P5
1
P5
2
P5
3
P5
4
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
Input port (floating)
HLDA output (The output value HLDA output (The output value
depends on the input to the
depends on the input to the
HOLD pin)
HOLD pin)
HOLD input (floating)
ALE output (鈥淟鈥?level is output)
RDY input (floating)
Input port (floating)
HOLD input (floating)
ALE output (鈥淟鈥?level is output)
RDY input (floating)
Input port (floating)
P5
5
P5
6
P5
7
Input port (floating)
Input port (floating)
Input port (floating)
P6, P7, P8
0
to P8
4
,
P8
6
, P8
7
, P9, P10 Input port (floating)
15