参数资料
型号: PIC16C433T-I/SO
厂商: Microchip Technology
文件页数: 117/126页
文件大小: 0K
描述: IC MCU CMOS 8BIT 10MHZ 2K 18SOIC
标准包装: 1,100
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 10MHz
连通性: LIN(本地互连网络)
外围设备: POR,WDT
输入/输出数: 5
程序存储器容量: 3.5KB(2K x 14)
程序存储器类型: OTP
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
数据转换器: A/D 4x8b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 18-SOIC(0.295",7.50mm 宽)
包装: 带卷 (TR)
90
4378C–AVR–09/08
AT90PWM1
Bits 7:6 – COM0A1:0: Compare Match Output A Mode
These bits control the Output Compare pin (OC0A) behavior. If one or both of the COM0A1:0
bits are set, the OC0A output overrides the normal port functionality of the I/O pin it is connected
to. However, note that the Data Direction Register (DDR) bit corresponding to the OC0A pin
must be set in order to enable the output driver.
When OC0A is connected to the pin, the function of the COM0A1:0 bits depends on the
WGM02:0 bit setting. Table 20 shows the COM0A1:0 bit functionality when the WGM02:0 bits
are set to a normal or CTC mode (non-PWM).
Table 21 shows the COM0A1:0 bit functionality when the WGM01:0 bits are set to fast PWM
mode.
Note:
1. A special case occurs when OCR0A equals TOP and COM0A1 is set. In this case, the Com-
pare Match is ignored, but the set or clear is done at TOP. See “Fast PWM Mode” on page 85
for more details.
Table 22 shows the COM0A1:0 bit functionality when the WGM02:0 bits are set to phase correct
PWM mode.
Note:
1. A special case occurs when OCR0A equals TOP and COM0A1 is set. In this case, the Com-
pare Match is ignored, but the set or clear is done at TOP. See “Phase Correct PWM Mode” on
page 111 for more details.
Bits 5:4 – COM0B1:0: Compare Match Output B Mode
Table 20. Compare Output Mode, non-PWM Mode
COM0A1
COM0A0
Description
0
Normal port operation, OC0A disconnected.
0
1
Toggle OC0A on Compare Match
1
0
Clear OC0A on Compare Match
1
Set OC0A on Compare Match
Table 21. Compare Output Mode, Fast PWM Mode(1)
COM0A1
COM0A0
Description
0
Normal port operation, OC0A disconnected.
01
WGM02 = 0: Normal Port Operation, OC0A Disconnected.
WGM02 = 1: Toggle OC0A on Compare Match.
1
0
Clear OC0A on Compare Match, set OC0A at TOP
1
Set OC0A on Compare Match, clear OC0A at TOP
Table 22. Compare Output Mode, Phase Correct PWM Mode(1)
COM0A1
COM0A0
Description
0
Normal port operation, OC0A disconnected.
01
WGM02 = 0: Normal Port Operation, OC0A Disconnected.
WGM02 = 1: Toggle OC0A on Compare Match.
10
Clear OC0A on Compare Match when up-counting. Set OC0A on
Compare Match when down-counting.
11
Set OC0A on Compare Match when up-counting. Clear OC0A on
Compare Match when down-counting.
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