M38867E8AHP MITSUBISHI [Mitsubishi Electric Semiconductor], M38867E8AHP Datasheet - Page 39

• Manufacturer Part Number: M38867E8AHP
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER??
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Table 8 Function description of control I/O pins at bus interface function selected
P4
P5
P5
P5
P5
P4
P4
P4
7
0
1
2
3
2
3
6
/SRDY
/A
/INT
/INT
/INT
/INT
/INT
/S
/S
/S
/R
/W
/OBF
/OBF
/OBF
Pin
1
0
0
CLK1
20
30
40
0
1
00
01
10
1
S
A
S
R
W
OBF00
OBF01
OBF10
1
0
0
Name
enable bit
OBF
output
–
–
–
–
–
1
0
0
00
enable bit
OBF
output
–
–
–
–
–
0
1
0
01
enable bit
OBF
output
–
–
–
–
–
0
0
1
10
/Output
Output
Output
Output
Output
Input
Input
Input
Input
Input
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Chip select input
This is used for selecting the data bus buffer and is
selected at “L” level.
Address input
This is used for selecting DBBSTS and DBBOUT
when the host CPU is read.
This is used for distinguishing command from data
when writing to the host CPU.
Chip select input
This is used for selecting the data bus buffer and is
selected at “L” level.
This is a timing signal for reading data from the
data bus buffer to the host CPU.
This is a timing signal for writing data to the data
bus buffer by the host CPU.
Status output signal
OBF
Status output signal
OBF
Status output signal
OBF
00
01
10
signal is output.
signal is output.
signal is output.
MITSUBISHI MICROCOMPUTERS
Functions
3886 Group
39