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參數資料
型號: PIC16CR77T-I/ML
廠商: Microchip Technology
文件頁數: 58/172頁
文件大?。?/td> 0K
描述: IC PIC MCU 8KX14 44QFN
標準包裝: 1,600
系列: PIC® 16C
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數: 33
程序存儲器容量: 14KB(8K x 14)
程序存儲器類型: ROM
RAM 容量: 368 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
數據轉換器: A/D 8x8b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-VQFN 裸露焊盤
包裝: 帶卷 (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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