參數(shù)資料
型號： DS80CH11
廠商： DALLAS SEMICONDUCTOR
元件分類： Microcontroller
英文描述： 8-BIT, MICROCONTROLLER, PQFP128
封裝： TQFP-128
文件頁數(shù)： 59/88頁
文件大?。?/td> 598K
代理商： DS80CH11
DS80CH11
011200 62/88
PWM CHANNEL BLOCK DIAGRAM Figure 11–3
8–BIT TIMER
PWM n CLOCK
ZERO COMPARATOR
MATCH COMPARATOR
S
R
Q
PWn
DC
BIT
PWn
OE
BIT
PWn
F
BIT
PWM
V
ALUE
PWM
n
PWn
T/C
BIT
REGISTER
PWO.n
(P6.n ALT.
PIN FUINCTION)
11.5 PWM SPECIAL FUNCTION REGISTERS
A total of 12 SFR’s are used to control the four PWM
channels. The operation of these registers are summa-
rized below:
11.5.1 PW01CS / PW23CS – PWM 0, 1 / PWM 2, 3 Clock Select Registers
PW01CS; SFR ADDR.=0D5H
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
PW0S2
PW0S1
PW0S0
PW0EN
PW1S2
PW1S1
PW1S0
PW1EN
PW23CS; SFR ADDR.=0E5H
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
PW2S2
PW2S1
PW2S0
PW2EN
PW3S2
PW3S1
PW3S0
PW3EN
Read/Write Access: Unrestricted.
Initialization: 00H on any type of reset
PWnS2–0 – PWM n Clock Select Bits.
These three bits select one of four prescale frequencies
or an external pin as the input to the PWM n frequency
generator, which is then used as the clock source for
PWM channel n. The bit selections operate as follows:
PWnS2
PWnS1
PWnS0
PWM n CLOCK
FREQ.
000
tMCLK* 1
001
tMCLK* 4
010
tMCLK* 16
011
tMCLK* 64
1
X
PWI.n pin*
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