參數(shù)資料
型號: S1C63406D0A0100
元件分類: 微控制器/微處理器
英文描述: MICROCONTROLLER, UUC103
封裝: DIE-103
文件頁數(shù): 85/151頁
文件大?。?/td> 1171K
代理商: S1C63406D0A0100
S1C63406/408 TECHNICAL MANUAL
EPSON
31
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Input Ports)
4.4 Input Ports (K00–K03)
K0x
Mask option
Address
VDD
Interrupt
request
Data
bus
VSS
Fig. 4.4.1.1 Configuration of input port
4.4.1 Configuration of input ports
The S1C63406/408 has four bits of general-purpose
input ports. Each of the input port terminals (K00–K03)
provides internal pull-up resistor. Pull-up resistor can
be selected for each bit with the mask option.
Figure 4.4.1.1 shows the configuration of input port.
Selection of "With pull-up resistor" with the mask
option suits input from the push switch, key matrix,
and so forth. When "Gate direct" is selected, the port
can be used for slide switch input and interfacing with
other LSIs.
4.4.2 Mask option
Internal pull-up resistor can be selected for each of the four bits of the input ports (K00–K03) with the
input port mask option.
When "Gate direct" is selected, take care that the floating status does not occur for the input. Select "With
pull-up resistor" for input ports that are not being used.
4.4.3 Interrupt function
All four bits of the input ports (K00–K03) provide the interrupt function. The conditions for issuing an
interrupt can be set by the software. Further, whether to mask the interrupt function can be selected by
the software.
Figure 4.4.3.1 shows the configuration of K00–K03 interrupt circuit.
Data
bus
Address
Input comparison
register (KCP00)
Noise
rejector
MUX
Interrupt selection
register (SIK00)
Interrupt factor
flag (IK00)
Address
Interrupt mask
register (EIK00)
Address
Noise reject selection
register (K0NR1, 0)
K00
K01
K02
K03
Sleep
cancelation
Interrupt
request
Fig. 4.4.3.1 Input interrupt circuit configuration
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