sm59264 SyncMOS Technologies,Inc, sm59264 Datasheet - Page 21

• Manufacturer Part Number: sm59264
• Description: 8-bits Micro-controller With 128kb Flash & 1kb Ram & Twsi & Spwm Embedded
• Manufacturer: SyncMOS Technologies,Inc

SPWM Registers -SPWM Data Register (SPWMD[4:0], $AC, $A7 ~$A4)
SPWMD[4:0] : content of SPWM Data Register. It determines duty cycle of SPWM output waveform.
BRM[2:0] : will insert certain narrow pulses among an 8-SPWM-cycle frame
Example of SPWM timing diagram:
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M012 Ver B SM59264
SPFS[1:0] : These two bits is 2’s power parameter to form a frequency divider for input clock.
Read / Write:
Reset value:
MOV P1CON , #08H
MOV SPWMD0 , #83H
SPFS1
SyncMOS Technologies International, Inc.
0
0
1
1
N = BRM[2:0]
SPFS0
SPWMD
000
001
010
011
100
101
110
111
[4:0]4
bit-7
R/W
0
1
0
1
0
Divider
SPWMD
[4:0]3
16
R/W
2
4
8
0
; SPWMD0[4:0]=10h (=16T high, 16T low), BRM[2:0] = 3
; Enable P1.3 as SPWM output pin
SPWMD
Number of SPWM cycles inserted in an 8-cycle frame
SPWM clock, Fosc=20MHz
[4:0]2
R/W
0
with 128KB flash & 1KB RAM & TWSI & SPWM embedded
1.25MHz
2.5MHz
10MHz
5MHz
SPWMD
[4:0]1
R/W
21
0
SPWMD
[4:0]0
R/W
0
1
2
3
4
5
6
7
0
SPWM clock, Fosc=24MHz
[2:0]2
BRM
R/W
0
1.5MHz
12MHz
6MHz
3MHz
8-Bits Micro-controller
[2:0]1
BRM
R/W
0
SM59264
[2:0]0
BRM
bit-0
R/W
05/2009
0