参数资料
型号: PIC16CR77T-I/ML
厂商: Microchip Technology
文件页数: 58/172页
文件大小: 0K
描述: IC PIC MCU 8KX14 44QFN
标准包装: 1,600
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 33
程序存储器容量: 14KB(8K x 14)
程序存储器类型: ROM
RAM 容量: 368 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
数据转换器: A/D 8x8b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-VQFN 裸露焊盘
包装: 带卷 (TR)
PIC18F2220/2320/4220/4320
DS39599G-page 148
2007 Microchip Technology Inc.
FIGURE 16-8:
PWM DIRECTION CHANGE
FIGURE 16-9:
PWM DIRECTION CHANGE AT NEAR 100% DUTY CYCLE(1)
DC
Period(1)
SIGNAL
Note 1: The direction bit in the CCP1 Control register (CCP1CON<7>) is written any time during the PWM cycle.
2: When changing directions, the P1A and P1C signals switch before the end of the current PWM cycle at intervals of
4 TOSC, 16 TOSC or 64 TOSC, depending on the Timer2 prescaler value. The modulated P1B and P1D signals are
inactive at this time.
Period
(Note 2)
P1A (Active High)
P1B (Active High)
P1C (Active High)
P1D (Active High)
DC
Forward Period
Reverse Period
P1A
ton
(2)
toff(3)
t = toff – ton
(2,3)
P1B
P1C
P1D
External Switch D
Potential
Shoot-Through
Current
Note 1: All signals are shown as active-high.
2: ton is the turn-on delay of power switch QC and its driver.
3: toff is the turn-off delay of power switch QD and its driver.
External Switch C
t1
DC
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