参数资料
型号: W83L951DG
厂商: Nuvoton Technology Corporation of America
文件页数: 84/112页
文件大小: 0K
描述: IC EMBEDDED CNTRLR 128-LQFP
标准包装: 90
系列: W83
核心处理器: 8051
芯体尺寸: 8-位
速度: 24MHz
连通性: 主机接口,PS/2,SMBus,UART/USART
外围设备: PWM,WDT
输入/输出数: 104
程序存储器容量: 64KB(64K x 8)
程序存储器类型: 闪存
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 3.6 V
数据转换器: A/D 8x10b; D/A 2x8b
振荡器型: 外部
工作温度: 0°C ~ 70°C
封装/外壳: 128-LQFP
包装: 托盘
W83L951DG/W83L951FG
Publication Release Date: August 2006
- 69 -
Revision 1.0
6.9
Pulse Width Modulator Block
W83L 951D provides 4 Pulse Width Modulator Output.
8-bit PWM has two: PWM1 and PWM2. The fixed resolution is about 64us(Input clock=24MHz) or
128us(Input clock=12MHz).
16-bit PWM has two: PWM3 and PWM4. The minimum resolution can be selected by frequency select
in PWM Control Register.
Table 6-17.Pulse Width Modulator Register Define
PULSE WIDTH MEASURER BLOCK(13)
EXTADDR
NAME
7
6
5
4
3
2
1
0
20
PWMCON
Reserved
PWM4 Freq. Select
Reserved
PWM3 Freq. Select
21
PWM1P
PWM 1 Period Register [7:0]
22
PWM1H
PWM 1 High Level Register [7:0]
23
PWM2P
PWM 2 Period Register [7:0]
24
PWM2H
PWM 2 High Level Register [7:0]
25
PWM3PL
PWM 3 Period Register [7:0]
26
PWM3PH
PWM 3 Period Register [15:8]
27
PWM3HL
PWM 3 High Level Register [7:0]
28
PWM3HH
PWM 3 High Level Register [15:8]
29
PWM4PL
PWM 4 Period Register [7:0]
2A
PWM4PH
PWM 4 Period Register [15:8]
2B
PWM4HL
PWM 4 High Level Register [7:0]
2C
PWM4HH
PWM 4 High Level Register [15:8]
Gray: Only with System Reset to initial.
Note:
If {PWM High Level Register} = 0, the output keeps in low level.
If {PWM High Level Register} >= {PWM Period Register} ,the PWM1/PWM2 output will keep
in high level with 1us low pulse , PWM3/PWM4 output will keep in high level without pulse.
If PWM1/PWM2 is {PWM Period Level Register} > {PWM High Level Register} >0, then
Period Width: 64
× {PWM Period Level Register} + 4units.
Low Width : 64
× ({PWM Period Level Register} - {PWM High Level Register}) + 1unit.
High Width : 64
× {PWM High Level Register} + 3 units.
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