參數(shù)資料
型號(hào): S1C60N08F0A0100
元件分類: 微控制器/微處理器
英文描述: MICROCONTROLLER, PQFP100
封裝: PLASTIC, QFP-100
文件頁數(shù): 73/145頁
文件大小: 1118K
代理商: S1C60N08F0A0100
S1C60N08 TECHNICAL HARDWARE
EPSON
I-21
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Input Ports)
4.4 Input Ports (K00–K03, K10, K20–K23)
4.4.1 Configuration of input ports
The S1C60N08 Series has nine bits (4 bits
× 2 + 1 bit) of general-purpose input ports. Each of the input
port terminals (K00–K03, K10, K20–K23) provides internal pull-down resistor. Pull-down resistor can be
selected for each bit with the mask option.
Figure 4.4.1.1 shows the configuration of input port.
Interrupt
request
VDD
VSS
Data
bus
K
Address
Mask
option
Fig. 4.4.1.1 Configuration of input port
Selection of "With pull-down 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.
Further, The input port terminal K02 and K03 are used as the input terminals for the event counter. (See
Section 4.12, "Event Counter", for details.)
4.4.2 Input comparison registers and interrupt function
All nine bits of the input ports (K00–K03, K10, K20–K23) provide the interrupt function for the five bits,
K00–K03 and K10. The conditions for issuing an interrupt can be set by the software for the five bits, K00–
K03 and K10. Further, whether to mask the interrupt function can be selected individually for all nine bits
by the software.
Figure 4.4.2.1 shows the configuration of K00–K03 and K10.
Figure 4.4.2.3 shows the configuration of K20–K23.
Data
bus
K
Address
Input comparison
register (KCP)
Address
Interrupt factor
flag (IK)
Noise
rejector
Address
Interrupt mask
register (EIK)
Interrupt request
Mask option
(K00–K03, K10)
One for each terminal series
Fig. 4.4.2.1 Input interrupt circuit configuration (K00–K03, K10)
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