參數(shù)資料
型號(hào): ATMEGA328P-15AZ
廠商: Atmel
文件頁(yè)數(shù): 55/83頁(yè)
文件大?。?/td> 0K
描述: MCU AVR 32K FLASH 15MHZ 32-TQFP
產(chǎn)品培訓(xùn)模塊: megaAVR Introduction
標(biāo)準(zhǔn)包裝: 1
系列: AVR® ATmega
核心處理器: AVR
芯體尺寸: 8-位
速度: 16MHz
連通性: I²C,SPI,UART/USART
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 23
程序存儲(chǔ)器容量: 32KB(16K x 16)
程序存儲(chǔ)器類型: 閃存
EEPROM 大小: 1K x 8
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 125°C
封裝/外殼: 32-TQFP
包裝: 剪切帶 (CT)
其它名稱: ATMEGA328P-15AZCT
2010-2012 Microchip Technology Inc.
DS41413C-page 217
PIC12(L)F1822/PIC16(L)F1823
24.4.1
HALF-BRIDGE MODE
In Half-Bridge mode, two pins are used as outputs to
drive push-pull loads. The PWM output signal is output
on the CCP1/P1A pin, while the complementary PWM
output signal is output on the P1B pin (see Figure 24-9).
This mode can be used for Half-Bridge applications, as
shown in Figure 24-9, or for Full-Bridge applications,
where four power switches are being modulated with
two PWM signals.
In Half-Bridge mode, the programmable dead-band delay
can be used to prevent shoot-through current in Half-
Bridge power devices. The value of the PDC<6:0> bits of
the PWM1CON register sets the number of instruction
cycles before the output is driven active. If the value is
greater than the duty cycle, the corresponding output
remains inactive
during
the
entire
cycle.
See
for more details of the dead-band delay
operations.
Since the P1A and P1B outputs are multiplexed with
the PORT data latches, the associated TRIS bits must
be cleared to configure P1A and P1B as outputs.
FIGURE 24-8:
EXAMPLE OF HALF-
BRIDGE PWM OUTPUT
FIGURE 24-9:
EXAMPLE OF HALF-BRIDGE APPLICATIONS
Period
Pulse Width
td
(1)
P1A(2)
P1B(2)
td = Dead-Band Delay
Period
(1)
Note 1:
At this time, the TMR2 register is equal to the
PR2 register.
2:
Output signals are shown as active-high.
P1A
P1B
FET
Driver
FET
Driver
Load
+
-
+
-
FET
Driver
FET
Driver
V+
Load
FET
Driver
FET
Driver
P1A
P1B
Standard Half-Bridge Circuit (“Push-Pull”)
Half-Bridge Output Driving a Full-Bridge Circuit
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