參數(shù)資料
型號： M44C510-P40
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, MICROCONTROLLER, PDIP40
封裝： DIP-40
文件頁數(shù)： 15/57頁
文件大小： 1105K
代理商： M44C510-P40
M44C510
TELEFUNKEN Semiconductors
Rev. A2, 13-Jan-98
22 (57)
Bidir. Port
IN_Enable
Data in
P6CR:
BP60
Bidir. Port
IN_Enable
Data in
BP61
CR0
decode
INT6
INT4
INT2
INT0
INT7
INT5
INT3
INT1
I/O bus
CR7
CR6
0
1
0
1
11
INT6
INT4
INT2
INT0
CR5
CR4
0
1
0
1
11
INT7
INT5
INT3
INT1
CR3
CR2
0
1
0
1
11
Dir.
INT
edge
INT
disabled
Dir.
Edge
Mask
CR1
CR0
out
yes
–
yes
in
–
in
no
CR7
CR6
CR5
CR4
CR3
CR2
CR1
96 11526
Figure 17. Port 6 external interrupts
2.2.5
Bidirectional Port 4
The bidirectional Port 4 is both a bitwise configurable I/O
port and provides the external pins for both the Timer 0
and the internal buzzer generator. As a normal port, it per-
forms in exactly the same way as bidirectional port type
2 (see figure 14). Two additional multiplexers allow data
and port direction control to be passed over to other inter-
nal modules (Timer 0 or Buzzer). Each of the four Port 4
pins can be individually switched by the Timer/Counter
I/O Register (TCIO). Figure 17 shows the internal inter-
faces to Port 4.
Master reset
Q
V
DD
V
DD
BP4y
Mask options
*
P4DATy
I/O Bus
D
I/O Bus
*
Pull-up
Pull-down
(Data out)
*
S
96 11527
P4DDRy
S
Q
D
TCIOy
T0Out
(Direction)
TDir
T0In
Figure 18. Bidirectional Port 4
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