參數(shù)資料
型號(hào)： EM785842M
廠商： ELAN Microelctronics Corp .
英文描述： 8-BIT MICRO-CONTROLLER
中文描述： 8位微控制器
文件頁(yè)數(shù)： 23/45頁(yè)
文件大?。?/td> 461K
代理商： EM785842M
EM785840/5841/5842
8-bit Micro-controller
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
2004/11/10 V1.2
PAGE1 (PORT switch)
7
-
R/W-0
Bit 0: Always set this bit to “1” otherwise partial ADC function cannot be used)
Bit 1 ~ Bit 7:
(undefined) not allowed to use
IOCD (TONE1 control, Clock source, Prescaler of CN1)
PAGE0 (Reserved)
PAGE1 (Clock source and prescaler for COUNTER1)
7
6
5
CNTI/ES
X
X
R/W-0
-
-
Bit 0 ~ Bit 2 (C1_PSC0 ~ C1_PSC2) : COUNTER1 prescaler ratio
C1_PSC2
C1_PSC1
C1_PSC0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Bit 3(CNT1S) : COUNTER1 clock source. This bit will un-effect on RC mode (RC mode’s CLK is always
equal to oscillator frequency).
0/1
16.384kHz / system clock.
6
-
5
-
4
-
3
-
2
-
1
-
0
1
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W/0
4
X
-
3
2
1
0
CNT1S
R/W-0
C1_PSC2
R/W-0
C1_PSC1 C1_PSC0
R/W-0
R/W-0
COUNTER1
1:2
1:4
1:8
1:16
1:32
1:64
1:128
1:256
Fig 7: Timer CLK source diagram
Bit4 ~ Bit6: Unused register. These three bits are not allowed to use.
Bit7 (CNTI/ES):Counter source select.
CNTI/ES = 0
Timer counter CLK come from system CLK or Crystal output and P94 is defined to
general propose IO.
CHTI/ES = 1
P94 is defined to input and Timer counter’s CLK will come from P94’s falling edge.
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