参数资料
型号: M37641F8FP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQFP80
封装: 14 X 20 MM, 0.80 MM, PLASTIC, QFP-80
文件页数: 103/140页
文件大小: 1694K
代理商: M37641F8FP
7641 Group
Rev.4.00
Aug 28, 2006
page 63 of 135
REJ03B0191-0400
Status output signal.
OBF0 signal is output.
Status output signal.
IBF0 signal is output.
Chip select input.
This is used for selecting the data bus buffer, which is
selected at “L” level.
Address input.
This is used for selecting DBBSTS and DBBOUT
when the host CPU reads.
This is used for distinguishing command from data
when the host CPU writes.
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.
Chip select input.
This is used for selecting the data bus buffer, which is
selected at “L” level.
Status output signal.
IBF1 signal is output.
Status output signal.
OBF1 signal is output.
P52/OBF0
Table 8 Function description of control I/O pins of master CPU bus interface
Pin
Name
OBF0
output
enable
bit
IBF0
output
enable
bit
OBF1
output
enable
bit
Input/
Output
Functions
OBF0
1
0
00
IBF1
output
enable
bit
Output
P53/IBF0
P54/S0
P55/A0
P56/R (E)
P57/W (R/W)
P72/S1
P73/IBF1/HLDA
P74/OBF1
IBF0
S0
A0
R (E)
W (R/W)
S1
IBF1
OBF1
0
0
1
0
0
1
0
1
0
Output
Input
Output
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