VRS51C1100-40-L ETC1 [List of Unclassifed Manufacturers], VRS51C1100-40-L Datasheet - Page 36

• Manufacturer Part Number: VRS51C1100-40-L
• Description: Versa 8051 MCU with 128KB of IAP/ISP Flash
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

PWM Data Registers
The following tables describe the PWM data registers.
The PWMDx bits hold the content of the PWM data
register and determine the duty cycle of the PWM
output waveforms. The NPx[2:0] bits will insert narrow
pulses into the 8-PWM-cycle frame.
T
T
T
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ABLE
ABLE
ABLE
Bit
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
VRS51C1100
PWMD0.4
PWMD0.0
PWMD1.4
PWMD1.0
PWMD2.4
PWMD2.0
40: PWM D
41: PWM D
42: PWM D
Mnemonic
PWMD0.4
PWMD0.3
PWMD0.2
PWMD0.1
PWMD0.0
NP0.2
NP0.1
NP0.0
Mnemonic
PWMD1.4
PWMD1.3
PWMD1.2
PWMD1.1
PWMD1.0
NP1.2
NP1.1
NP1.0
7
3
7
3
7
3
ATA
ATA
ATA
R
R
R
EGISTER
EGISTER
EGISTER
PWMD0.3
PWMD1.3
PWMD2.3
NP0.2
NP1.2
NP2.2
6
2
Description
Contents of PWM Data Register 0 Bit 4
Contents of PWM Data Register 0 Bit 3
Contents of PWM Data Register 0 Bit 2
Contents of PWM Data Register 0 Bit 1
Contents of PWM Data Register 0 Bit 0
Inserts Narrow Pulses in a 8-PWM-Cycle
Frame
6
2
Description
Contents of PWM Data Register 1 Bit 4
Contents of PWM Data Register 1 Bit 3
Contents of PWM Data Register 1 Bit 2
Contents of PWM Data Register 1 Bit 1
Contents of PWM Data Register 1 Bit 0
Inserts Narrow Pulses in a 8-PWM-Cycle
Frame
6
2
0 (PWMD0) – SFR A4
1 (PWMD1) – SFR A5
2 (PWMD2) – SFR A6
PWMD0.2
PWMD1.2
PWMD2.2
NP0.1
NP1.1
NP2.1
5
1
5
1
5
1
H
H
H
PWMD0.1
PWMD1.1
PWMD2.1
NP0.0
NP1.0
NP2.0
4
0
4
0
4
0
T
The table below shows the number of PWM cycles
inserted into an 8-cycle frame when we vary the NP
number.
ABLE
Bit
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
2
1
NP[2:0]
PWMD3.4
PWMD3.0
43: PWM D
Mnemonic
PWMD2.4
PWMD2.3
PWMD2.2
PWMD2.1
PWMD2.0
NP2.2
NP2.1
NP2.0
Mnemonic
PWMD3.4
PWMD3.3
PWMD3.2
PWMD3.1
PWMD3.0
NP3.2
NP3.1
7
3
000
001
010
011
100
101
110
111
ATA
R
EGISTER
PWMD3.3
NP3.2
Description
Contents of PWM Data Register 2 Bit 4
Contents of PWM Data Register 2 Bit 3
Contents of PWM Data Register 2 Bit 2
Contents of PWM Data Register 2 Bit 1
Contents of PWM Data Register 2 Bit 0
Inserts Narrow Pulses in a 8-PWM-Cycle
Frame
Description
Contents of PWM Data Register 3 Bit 4
Contents of PWM Data Register 3 Bit 3
Contents of PWM Data Register 3 Bit 2
Contents of PWM Data Register 3 Bit 1
Contents of PWM Data Register 3 Bit 0
Inserts Narrow Pulses in a 8-PWM-Cycle
Frame
6
2
3 (PWMD3) – SFR A7
Number of PWM cycles inserted
in an 8-cycle frame
PWMD3.2
NP3.1
5
1
H
0
1
2
3
4
5
6
7
page 36 of 50
PWMD3.1
NP3.0
4
0