参数资料
型号: IA88C00-PLC68I-R
厂商: Innovasic Semiconductor
英文描述: Microcontroller
中文描述: 微控制器
文件页数: 37/80页
文件大小: 707K
代理商: IA88C00-PLC68I-R
IA88C00
Microcontroller
Data Sheet
As of Production Version -01
Copyright
2005 ENG 21 0 050519-00 www.Innovasic
Innovasic.com
Innovasic Semiconductor
Page 37 of 80 1.888.824.4184
Figure 34. Port 0 Mode Control Register (P0M), R240 Bank 0
Bit
7
D7
0
R/W
6
D6
0
R/W
5
D5
0
R/W
4
D4
1
R/W
3
D3
1
R/W
2
D2
1
R/W
1
D1
1
R/W
0
D0
1
R/W
Initial Value
Read/Write
The Port 0 Mode register programs each bit of Port 0 as an address output (part of an external memory
interface) or as an I/O bit. When a bit of this register is 1, the corresponding bit of Port 0 is defined as an
address output. When 0, the corresponding bit of Port 0 is defined as an I/O bit. D0-D7 - P00-P07 Mode,
0 = I/O, 1 = Address.
Figure 35. Port Mode Register (pm), R241 Bank 0
Bit
7
D7
X
6
D6
X
5
D5
1
4
D4
0
3
D3
0
2
D2
0
1
D1
0
0
D0
1
Initial Value
Read/Write
The Port Mode register provides some additional mode control for Ports 0 and 1.
D0 - Port 0 Direction
- If this bit is a 1, all bits of Port 0 configured as I/O will be inputs. If this bit is a 0,
the I/O lines will be outputs.
D1 - Open-Drain Port 0
- If this bit is a 1, all bits of Port 0 configured as outputs will be open-drain
outputs. If 0, they will be push-pull outputs. This bit has no effect on those bits not configured as outputs.
D2 - Open-Drain Port 1
- If Port 1 is configured as an output port and this bit is a 1, all of the port will
be open-drain outputs. If this bit is a 0, they will be push-pull outputs. This bit has no effect if Port 1 is
not configured as an output port or A/D 0-7.
D3 - Enable /DM
- If this bit is a 1, Port 35 is configured as Data Memory output line /DM.
D4-D5
- This field selects the configuration of Port 1 as an output port, input port, or address/data port as
part of the external memory interface.
Figure 36. Handshake 0 Control (H0C), R244 Bank 0
Bit
7
D7
X
W/O
6
D6
X
W/O
5
D5
X
W/O
4
D4
X
W/O
3
D3
X
W/O
2
D2
0
W/O
1
D1
X
W/O
0
D0
0
W/O
Initial Value
Read/Write
This register controls Handshake Channel 0.
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