VRS51C1100-40-L ETC1 [List of Unclassifed Manufacturers], VRS51C1100-40-L Datasheet - Page 37
![no-image](/images/no-image-200.jpg)
VRS51C1100-40-L
Manufacturer Part Number
VRS51C1100-40-L
Description
Versa 8051 MCU with 128KB of IAP/ISP Flash
Manufacturer
ETC1 [List of Unclassifed Manufacturers]
Datasheet
1.VRS51C1100-40-L.pdf
(50 pages)
- Current page: 37 of 50
- Download datasheet (3Mb)
Example of PWM Timing Diagram
F
If Fosc = 20MHz, PDCK[1:0] of PWMC = #03H, then PWM clock = 20MHz/2^4 = 20MHz/16 = 1.25MHz. PWM output
cycle frame frequency = (20MHz/2^4)/32 = 39.1 kHz.
______________________________________________________________________________________________
www.ramtron.com
IGURE
VRS51C1100
22: PWM T
16
1st Cycle
MOV PWMD0 #83H
MOV PWME, #08H
frame
IMING
32T
D
IAGRAM
1T
(Narrow pulse inserted by NP0[2:0]=3)
PWM clock= 1/T= Fosc / 2^(PDIV+1)
The SPWM output cycle frame frequency = SPWM clock/32 = [Fosc/2^(PDIV+1)]/32
2nd Cycle
frame
32T
; PWMD04:0]=10h (=16T high, 16T low), NP02:0] = 3
; Enable P1.3 as PWM output pin
16
3rd Cycle
frame
32T
1T
4th Cycle
frame
32T
5th Cycle
16
frame
32T
1T
6th Cycle
frame
32T
7th Cycle
16
frame
32T
page 37 of 50
16
8th Cycle
frame
32T
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