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
文件頁數(shù)： 17/79頁
文件大?。?/td> 606K
代理商： S1C6N3B0D0A0100
16
EPSON
S1C6N3B0 TECHNICAL MANUAL
CHAPTER 4: PERIPHERAL CIARCUITS AND OPERATION (Input Ports)
4.3 Input Ports (K00–K03)
4.3.1 Configuration of input port
The S1C6N3B0 Series has 4 bits of general-purpose input port. Each of the input port terminals (K00–K03)
has an internal pull-up resistor. The pull-up resistor can be selected for each bit with the mask option.
Figure 4.3.1.1 shows the configuration of input port.
VDD
VSS
K
Interrupt
request
Data
bus
Address
Mask
option
Fig. 4.3.1.1 Configuration of input port
Selecting "pull-up resistor enabled" with the mask option allows input from a push button, key matrix,
and so forth. When "pull-up resistor disabled" is selected, the port can be used for slide switch input and
interfacing with other LSIs.
4.3.2 Interrupt function
All four input port bits (K00–K03) provide the interrupt function.
Figure 4.3.2.1 shows the configuration of K00–K03.
Data
bus
Kxx
Address
Mask option
Interrupt factor
flag (IK0)
Interrupt
request
Interrupt mask
register (EIK)
Noise
reject
circuit
Fig. 4.3.2.1 Input interrupt circuit configuration (K00–K03)
The interrupt mask registers (EIK00–EIK03) enable the interrupt mask to be selected individually for
K00–K03. An interrupt occurs at the falling edge of the input signal which is not masked and the inter-
rupt factor flag (IK0) is set to "1".
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