SM89516A_06 Datasheet, PDF (11/22 Pages) SyncMOS Technologies,Inc – 8-Bits Micro-controller With 64KB flash & 1KB RAM embedded

SyncMOS Technologies International, Inc.
5.2 SPWM Registers - P1CON, SPWMC, SPWMD[4:0]
SM89516A
8-Bits Micro-controller
With 64KB flash & 1KB RAM embedded
SPWM Registers - Port1 Configuration Register (P1CON, $9B)
bit-7
bit-0
Read / Write:
Reset value:
SPWME4
R/W
0
SPWME3
R/W
0
SPWME2
R/W
0
SPWME1
R/W
0
SPWME0
R/W
0
Unused
-
*
Unused
-
*
Unused
-
*
SPWME[4:0] : When the bit set to one, the corresponding SPWM pin is active as SPWM function. When the bit reset to
zero, the corresponding SPWM pin is active as I/O pin. Five bits are cleared upon reset.
SPWM Registers -SPWM Control Register (SPWMC, $A3)
bit-7
bit-0
Unused Unused Unused Unused Unused Unused
Read / Write:
-
-
-
-
-
-
Reset value:
*
*
*
*
*
*
SPFS[1:0] : These two bits is 2’s power parameter to form a frequency divider for input clock.
SPFS1
R/W
0
SPFS0
R/W
0
SPFS1
0
0
1
1
SPFS0
0
1
0
1
Divider
2
4
8
16
SPWM clock, Fosc=20MHz
10MHz
5MHz
2.5MHz
1.25MHz
SPWM clock, Fosc=24MHz
12MHz
6MHz
3MHz
1.5MHz
SPWM Registers -SPWM Data Register (SPWMD[4:0], $AC, $A7 ~$A4)
Read / Write:
Reset value:
bit-7
SPWMD
[4:0]4
R/W
0
SPWMD
[4:0]3
R/W
0
SPWMD
[4:0]2
R/W
0
SPWMD
[4:0]1
R/W
0
SPWMD
[4:0]0
R/W
0
BRM
[2:0]2
R/W
0
BRM
[2:0]1
R/W
0
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
bit-0
BRM
[2:0]0
R/W
0
Specifications subject to change without notice contact your sales representatives for the most recent information.
Ver 2.1 SM89516A 08/2006
11