參數(shù)資料
型號(hào)： KS57C2504
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
元件分類(lèi)： 4位微控制器
英文描述： 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述： 4位單片機(jī)的小型通用紅外遙控器
文件頁(yè)數(shù)： 28/94頁(yè)
文件大?。?/td> 763K
代理商： KS57C2504
PRODUCT SPECIFICATION
S3C7254
4–28
Table 13. IMOD0, 1 and 2 Register Organization
IMOD0
IMOD0.3
0
1
0
IMOD0.1
IMOD0.0
Effect of IMOD0 Settings
Select CPU clock for sampling
Select fxx/64 sampling clock
Rising edge detection
Falling edge detection
Both rising and falling edge detection
IRQ0 flag cannot be set to "1"
0
0
1
1
0
1
0
1
IMOD1
IMOD2
0
0
0
IMOD1.0
IMOD2.0
0
1
Effect of IMOD1 and IMOD2 Settings
Rising edge detection
Falling edge detection
When a sampling clock rate of fxx/64 is used for INT0, an interrupt request flag must be cleared before 16 ma-
chine cycles have elapsed. Since the INT0 pin has a clock-driven noise filtering circuit built into it, please take
the following precautions when you use it:
— To trigger an interrupt, the input signal width at INT0 must be at least two times wider than the pulse width of
the clock selected by IMOD0. This is true even when the INT0 pin is used for general-purpose input.
— you can use INT0 to release idle mode, when fxx/64 is selected as a sampling clock.
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