參數(shù)資料
型號(hào)： KS57C2504
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
元件分類： 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
文件頁數(shù)： 65/94頁
文件大?。?/td> 763K
代理商： KS57C2504
S3C7254
PRODUCT SPECIFICATION
4–65
COMPARATOR
P1.0 and P1.1 can be used as a analog input port
for a comparator. The reference voltage for the 2-
channel comparator can be supplied either internally
or externally at P1.0. When an internal reference
voltage is used, two channels (P1.0–P1.1) are used
for analog inputs and the internal reference voltage
is varied in 16 levels. If an external reference
voltage is input at P1.0, the other P1.1 pins are used
for analog input.
When a conversion is completed, the result is saved
in the comparison result register CMPREG. The
initial values of the CMPREG are undefined and the
comparator operation is disabled by a
RESET
. The
comparator module has the following components:
P1.0 /CIN0 /INT0
P1.1 /CIN1 /INT1
COMPARISON
RESULT
REGISTER
(CMPREG)
8
M
U
X
V
DD
1/2R
R
R
1/2R
CMOD.7
CMOD.6
CMOD.5
0
CMOD.3
CMOD.2
CMOD.1
CMOD.0
V
REF
(INTERNAL)
+
–
I
M
U
X
4
M
U
X
V
REF
(EXTERNAL)
Note:
INT occures only for digital input selecting: for analog input, any INT doesn't.
Figure 42. Comparator Circuit Diagram
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