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SH79F084BL/016LU Datasheet(PDF) 64 Page - SINOWEALTH Electronic Ltd

Part # SH79F084BL/016LU
Description  Enhanced 8051 Microcontroller with 10bit ADC
PDF  86 Pages
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Manufacturer  SINOWEALTH [SINOWEALTH Electronic Ltd]
Direct Link  https://en.sinowealth.com
Logo SINOWEALTH - SINOWEALTH Electronic Ltd

SH79F084BL/016LU Datasheet(HTML) 64 Page - SINOWEALTH Electronic Ltd

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SH79F084B
64
9.3 PWM Module
9.3.1 Feature
 8-bit PWM modules
 Provided interrupt function on period and duty overflow
 Selectable output polarity
The SH79F084B has a 8-bit PWM modules. The PWM modules can provide the pulse width modulation waveform with the
period and the duty being controlled, individually. The PWMCON is used to control the PWM module operation with proper
clocks. The PWMP is used to control the period cycle of the PWM module output. And the PWMD is used to control the duty in
the waveform of the PWM module output.
9.3.2 Register
Table 9.9 PWM Control Register
D1H
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
PWMCON
PWMEN
PWMS
PWMCK1
PWMCK0
-
-
PWMIF
PWMSS
R/W
R/W
R/W
R/W
R/W
-
-
R/W
R/W
Reset Value
(POR/WDT/LVR/PIN)
0
0
0
0
-
-
0
0
Bit Number
Bit Mnemonic
Description
7
PWMEN
PWM Enable
0: Disable PWM module
1: Enable PWM module
6
PWMS
PWM output Polarity Selection
0: High Active, PWMN output high during duty time, output low during remain
period time
1: Low Active, PWMN output low during duty time, output high during remain
period time
5-4
PWMCK[1:0]
PWM clock select bit
00: System clock/2
01: System clock/4
10: System clock/8
11: System clock/16
1
PWMIF
PWM interrupt flag
0: PWM period counter not overflow
1: Set by hardware to indicate that the PWM period counter overflow
0
PWMSS
PWM output share selection
0: PWM output disable, used as I/O port
1: PWM output enable
Table 9.10 PWM Period Control Register
D2H
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
PWMP
PWMP.7
PWMP.6
PWMP.5
PWMP.4
PWMP.3
PWMP.2
PWMP.1
PWMP.0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset Value
(POR/WDT/LVR/PIN)
0
0
0
0
0
0
0
0
Bit Number
Bit Mnemonic
Description
7-0
PWMP[7:0]
PWM output period cycle = PWMP * PWM clock
When PWMP = 00H, PWM pin outputs GND if the PWMS = 0
When PWMP = 00H, PWM pin outputs HIGH if the PWMS = 1



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