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參數(shù)資料
| 型號： | AT43USB351M-AC |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Full-speed/Low-speed USB Microcontroller with ADC and PWM |
| 中文描述： | 8-BIT, MROM, 24 MHz, RISC MICROCONTROLLER, PQFP48 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, PLASTIC, MS-026BBC, LQFP-48 |
| 文件頁數(shù)： | 27/101頁 |
| 文件大?。?/td> | 624K |
| 代理商： | AT43USB351M-AC |
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27
AT43USB351M
3302E–USB–7/04
Timer/Counter Interrupt Flag Register – TIFR
Bit 7 – TOV1: Timer/Counter1 Overflow Flag
The TOV1 is set (one) when an overflow occurs in Timer/Counter1. TOV1 is cleared by the
hardware when executing the corresponding interrupt handling vector. Alternatively, TOV1 is
cleared by writing a logic one to the flag. When the I-bit in SREG, and TOIE1 (Timer/Counter1
Overflow Interrupt Enable), and TOV1 are set (one), the Timer/Counter1 Overflow Interrupt is
executed. In PWM mode, this bit is set when Timer/Counter1 changes counting direction at
$0000.
Bit 6 – OCF1A: Output Compare Flag 1A
The OCF1A bit is set (one) when compare match occurs between the Timer/Counter1 and the
data in OCR1A - Output Compare Register 1A. OCF1A is cleared by the hardware when exe-
cuting the corresponding interrupt handling vector. Alternatively, OCF1A is cleared by writing a
logic one to the flag. When the I-bit in SREG, and OCIE1A (Timer/Counter1 Compare match
InterruptA Enable), and the OCF1A are set (one), the Timer/Counter1 Compare A match Inter-
rupt is executed.
Bit 5 – OCF1B: Output Compare Flag 1B
The OCF1B bit is set (one) when compare match occurs between the Timer/Counter1 and the
data in OCR1B - Output Compare Register 1B. OCF1B is cleared by the hardware when exe-
cuting the corresponding interrupt handling vector. Alternatively, OCF1B is cleared by writing a
logic one to the flag. When the I-bit in SREG, and OCIE1B (Timer/Counter1 Compare match
InterruptB Enable), and the OCF1B are set (one), the Timer/Counter1 Compare B match Inter-
rupt is executed.
Bit 4 – Res: Reserved Bit
This bit is a reserved bit in the AT43USB351M and always reads zero.
Bit 3 – ICF1: - Input Capture Flag 1
The ICF1 bit is set (one) to flag an input capture event, indicating that the Timer/Counter1
value has been transferred to the input capture register - ICR1. ICF1 is cleared by the hard-
ware when executing the corresponding interrupt handling vector. Alternatively, ICF1 is
cleared by writing a logic one to the flag. When the SREG I-bit, and TICIE1 (Timer/Counter1
Input Capture Interrupt Enable), and ICF1 are set (one), the Timer/Counter1 Capture Interrupt
is executed.
Bit 2 – Res: Reserved Bit
This bit is a reserved bit in the AT43USB351M and always reads zero.
Bit 1 – TOV: Timer/Counter0 Overflow Flag
The bit TOV0 is set (one) when an overflow occurs in Timer/Counter0. TOV0 is cleared by the
hardware when executing the corresponding interrupt handling vector. Alternatively, TOV0 is
cleared by writing a logic one to the flag. When the SREG I- bit, and TOIE0 (Timer/Counter0
Overflow Interrupt Enable), and TOV0 are set (one), the Timer/Counter0 Overflow interrupt is
executed.
Bit 0 – Res: Reserved Bit
This bit is a reserved bit in the AT43USB351M and always reads zero.
Bit
7
6
5
4
3
2
1
0
$38 ($58)
TOV1
OCF1A
OCIFB
–
ICF1
–
TOV0
–
TIFR
Read/Write
R/W
R/W
R/W
R
R/W
R
R/W
R
Initial Value
0
0
0
0
0
0
0
0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT43USB353M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset |
| AT43USB353M_03 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low Cost USB Microcontroller with Hub, ADC and PWM |
| AT43USB353M_04 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM |
| AT43USB353M-AC | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM |
| AT43USB355 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset |
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