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參數(shù)資料
| 型號： | R5F2L36ACDFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 10 X 10 MM, 0.50 MM PITCH, PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 41/74頁 |
| 文件大小： | 959K |
| 代理商： | R5F2L36ACDFP |
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47
2588F–AVR–06/2013
ATtiny261/461/861
8.4
Register Description
8.4.1
MCUSR – MCU Status Register
The MCU Status Register provides information on which reset source caused an MCU Reset.
Bits 7:4 – Res: Reserved Bits
These bits are reserved bits in the ATtiny261/461/861 and will always read as zero.
Bit 3 – WDRF: Watchdog Reset Flag
This bit is set if a Watchdog Reset occurs. The bit is reset by a Power-on Reset, or by writing a
logic zero to the flag.
Bit 2 – BORF: Brown-out Reset Flag
This bit is set if a Brown-out Reset occurs. The bit is reset by a Power-on Reset, or by writing a
logic zero to the flag.
Bit 1 – EXTRF: External Reset Flag
This bit is set if an External Reset occurs. The bit is reset by a Power-on Reset, or by writing a
logic zero to the flag.
Bit 0 – PORF: Power-on Reset Flag
This bit is set if a Power-on Reset occurs. The bit is reset only by writing a logic zero to the flag.
To make use of the Reset Flags to identify a reset condition, the user should read and then reset
the MCUSR as early as possible in the program. If the register is cleared before another reset
occurs, the source of the reset can be found by examining the Reset Flags.
8.4.2
WDTCR – Watchdog Timer Control Register
Bit 7 – WDIF: Watchdog Timeout Interrupt Flag
This bit is set when a time-out occurs in the Watchdog Timer and the Watchdog Timer is config-
ured for interrupt. WDIF is cleared by hardware when executing the corresponding interrupt
handling vector. Alternatively, WDIF is cleared by writing a logic one to the flag. When the I-bit in
SREG and WDIE are set, the Watchdog Time-out Interrupt is executed.
Bit 6 – WDIE: Watchdog Timeout Interrupt Enable
When this bit is written to one, WDE is cleared, and the I-bit in the Status Register is set, the
Watchdog Time-out Interrupt is enabled. In this mode the corresponding interrupt is executed
instead of a reset if a timeout in the Watchdog Timer occurs.
If WDE is set, WDIE is automatically cleared by hardware when a time-out occurs. This is useful
for keeping the Watchdog Reset security while using the interrupt. After the WDIE bit is cleared,
Bit
7
6
5
43
21
0
–
WDRF
BORF
EXTRF
PORF
MCUSR
Read/Write
R
R/W
Initial Value
0
See Bit Description
Bit
7
65
43
21
0
WDIF
WDIE
WDP3
WDCE
WDE
WDP2
WDP1
WDP0
WDTCR
Read/Write
R/WR/W
Initial Value
0
X
0
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相關代理商/技術參數(shù) |
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|---|---|
| R5F2L36ACDFP#30 | 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 96KB FLASH 64LQFP |
| R5F2L36ACDFP#U1 | 制造商:Renesas Electronics Corporation 功能描述: |
| R5F2L36ACDFP#V2 | 制造商:Renesas Electronics Corporation 功能描述:R8C/L36C 96+4/10 64LQFP 10X10 制造商:Renesas Electronics Corporation 功能描述:R8C/L36C 96+4/10 64LQFP 10X10 -40 TO +85 - Trays 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT 96KB FLASH 64LQFP |
| R5F2L36ACNFP#30 | 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 96KB FLASH 64LQFP |
| R5F2L36ACNFP#V2 | 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 96KB FLASH 64LQFP |
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