參數(shù)資料
型號(hào)： S1C6N3B0D0A0100
元件分類： 微控制器/微處理器
英文描述： MICROCONTROLLER, UUC54
封裝： DIE-54
文件頁(yè)數(shù)： 29/79頁(yè)
文件大?。?/td> 606K
代理商： S1C6N3B0D0A0100
S1C6N3B0 TECHNICAL MANUAL
EPSON
27
CHAPTER 4: PERIPHERAL CIARCUITS AND OPERATION (I/O Ports)
4.5.5 Interrupt function
The I/O ports P01 or P03 can generate an input interrupt. To use this function set the P01 or P03 to input
only and select the interrupt function by mask option.
Figure 4.5.5.1 shows the configuration of the interrupt circuit.
P03
P01
Mask option
Interrupt
request
Interrupt mask
register (EIP0)
Data
bus
Noise reject
circuit
Mask option
Address
Interrupt factor
flag (IP0)
Address
Fig. 4.5.5.1 Configuration of interrupt circuit
The input interrupt can be masked using the interrupt mask register EIP0. The input interrupt occurs at
the falling edge of the signal input to the selected port only when the interrupt has been enabled by the
interrupt mask register. When an input interrupt occurs, the interrupt factor flag IP0 is set to "1".
4.5.6 Control of I/O port
Table 4.5.6.1 shows the I/O port control bits and their addresses.
Table 4.5.6.1 I/O memory (I/O port)
Address
Comment
D3
D2
Register
D1
D0
Name
Init 1
10
0E9H
0
EIP0
SIOMODE EISIO
RR/W
0 3
EIP0
SIOMODE
EISIO
– 2
0
–
Enable
Output
Enable
–
Mask
Input
Mask
Unused
Interrupt mask register (P0)
SIO terminal input/output control
Interrupt mask register (serial interface)
0EDH
00
IP0
IK0
R
0 3
IP0 4
IK0 4
– 2
0
–
Yes
–
No
Unused
Interrupt factor flag (P0)
Interrupt factor flag (K00–K03)
1
2
Initial value at initial reset
Not set in the circuit
3
4
Always "0" being read
Reset (0) immediately after being read
0F6H
P03
P02
P01
P00
R/W
P03
P02
P01
P00
– 2
High
Low
P0 I/O port data
0FCH
0
PLON
IOC
RR/W
0 3
PLON
IOC
– 2
0
–
On
Output
–
Off
Input
Unused
I/O port pull-up control
I/O port I/O control
P00–P03: I/O port data (0F6H)
I/O port data can be read and output data can be written through these registers.
Writing
When "1" is written: High level
When "0" is written: Low level
When the I/O port is set to the output mode, the written data is output from the I/O port terminal
unchanged. When "1" is written as the port data, the port terminal goes high (VDD), and when "0" is
written, the level goes low (VSS). Port data can also be written in the input mode.
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