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參數(shù)資料
| 型號(hào)： | MR80C32-20/883:RD |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, 20 MHz, MICROCONTROLLER, CQCC44 |
| 封裝： | LCC-44 |
| 文件頁(yè)數(shù)： | 40/81頁(yè) |
| 文件大小： | 663K |
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45
ATtiny28L/V
1062F–AVR–07/06
ing the corresponding interrupt handling vector. Alternatively, ACI is cleared by writing a
logical “1” to the flag.
Bit 3 – ACIE: Analog Comparator Interrupt Enable
When the ACIE bit is set (one) and the I-bit in the Status Register is set (one), the ana-
log comparator interrupt is activated. When cleared (zero), the interrupt is disabled.
Bit 2 – RES: Reserved Bit
This bit is a reserved bit in the ATtiny28 and will always read as zero.
Bits 1, 0 - ACIS1, ACIS0: Analog Comparator Interrupt Mode Select
These bits determine which comparator events trigger the Analog Comparator Interrupt.
The different settings are shown in Table 19.
Note:
When changing the ACIS1/ACIS0 bits, the Analog Comparator Interrupt must be dis-
abled by clearing its Interrupt Enable bit in the ACSR register. Otherwise, an interrupt can
occur when the bits are changed.
Caution: Using the SBI or CBI instruction on bits other than ACI in this register will write
a one back into ACI if it is read as set, thus clearing the flag.
Table 19. ACIS1/ACIS0 Settings
ACIS1
ACIS0
Interrupt Mode
0
Comparator Interrupt on Output Toggle
01
Reserved
1
0
Comparator Interrupt on Falling Output Edge
1
Comparator Interrupt on Rising Output Edge
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