參數(shù)資料
型號: MQ80C52XXX-36/883
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CQFP44
封裝: CERAMIC, QFP-44
文件頁數(shù): 19/152頁
文件大小: 2528K
代理商: MQ80C52XXX-36/883
115
2486AA–AVR–02/2013
ATmega8(L)
Note:
1. The CTC2 and PWM2 bit definition names are now obsolete. Use the WGM21:0 definitions.
However, the functionality and location of these bits are compatible with previous versions of
the timer
Bit 5:4 – COM21:0: Compare Match Output Mode
These bits control the Output Compare Pin (OC2) behavior. If one or both of the COM21:0 bits
are set, the OC2 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 OC2 pin must be set
in order to enable the output driver.
When OC2 is connected to the pin, the function of the COM21:0 bits depends on the WGM21:0
bit setting.
Table 43 shows the COM21:0 bit functionality when the WGM21:0 bits are set to a normal or
CTC mode (non-PWM).
Table 44 shows the COM21:0 bit functionality when the WGM21:0 bits are set to fast PWM
mode.
Note:
1. A special case occurs when OCR2 equals TOP and COM21 is set. In this case, the Compare
Match is ignored, but the set or clear is done at BOTTOM. See “Fast PWM Mode” on page 110
for more details
Table 42. Waveform Generation Mode Bit Description
Mode
WGM21
(CTC2)
WGM20
(PWM2)
Timer/Counter Mode
of Operation(1)
TOP
Update of
OCR2
TOV2 Flag
Set
0
Normal
0xFF
Immediate
MAX
1
0
1
PWM, Phase Correct
0xFF
TOP
BOTTOM
2
1
0
CTC
OCR2
Immediate
MAX
3
1
Fast PWM
0xFF
BOTTOM
MAX
Table 43. Compare Output Mode, Non-PWM Mode
COM21
COM20
Description
0
Normal port operation, OC2 disconnected
0
1
Toggle OC2 on Compare Match
1
0
Clear OC2 on Compare Match
1
Set OC2 on Compare Match
Table 44. Compare Output Mode, Fast PWM Mode
COM21
COM20
Description
0
Normal port operation, OC2 disconnected
01
Reserved
1
0
Clear OC2 on Compare Match, set OC2 at BOTTOM,
(non-inverting mode)
1
Set OC2 on Compare Match, clear OC2 at BOTTOM,
(inverting mode)
相關(guān)PDF資料
PDF描述
S80C32-L16D 8-BIT, 16 MHz, MICROCONTROLLER, PQCC44
MP80C51C-36D 8-BIT, MROM, 36 MHz, MICROCONTROLLER, PDIP40
MR80C52EXXX-16SHXXX:R 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQCC44
MD83C154DCXXX-25P883D 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CDIP40
S80C32E-20R 8-BIT, 20 MHz, MICROCONTROLLER, PQCC44
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MQ82370-20 制造商:Rochester Electronics LLC 功能描述:- Bulk
MQ8238020 制造商:Intel 功能描述:CONTROLLER: OTHER
MQ82380-20 制造商:Rochester Electronics LLC 功能描述:- Bulk
MQ82380-20/R 制造商:Rochester Electronics LLC 功能描述:
MQ82592 制造商:Rochester Electronics LLC 功能描述:- Bulk