ATtiny26(L) has an On-chip Brown-out Detection (BOD) circuit for monitoring the V<" />
參數(shù)資料
型號: ATTINY26L-8PU
廠商: Atmel
文件頁數(shù): 99/169頁
文件大?。?/td> 0K
描述: IC MCU AVR 2K 5V 8MHZ 20-DIP
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
tinyAVR Introduction
標(biāo)準(zhǔn)包裝: 18
系列: AVR® ATtiny
核心處理器: AVR
芯體尺寸: 8-位
速度: 8MHz
連通性: USI
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 16
程序存儲器容量: 2KB(1K x 16)
程序存儲器類型: 閃存
EEPROM 大小: 128 x 8
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 11x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-DIP(0.300",7.62mm)
包裝: 管件
產(chǎn)品目錄頁面: 612 (CN2011-ZH PDF)
配用: ATSTK600-RC08-ND - STK600 ROUTING CARD AVR
ATSTK600-ND - DEV KIT FOR AVR/AVR32
ATAVRISP2-ND - PROGRAMMER AVR IN SYSTEM
ATSTK505-ND - ADAPTER KIT FOR 14PIN AVR MCU
其它名稱: ATTINY26L-8PJ
ATTINY26L-8PJ-ND
35
1477K–AVR–08/10
ATtiny26(L)
Brown-out
Detection
ATtiny26(L) has an On-chip Brown-out Detection (BOD) circuit for monitoring the VCC level dur-
ing the operation. The BOD circuit can be enabled/disabled by the fuse BODEN. When the BOD
is enabled (BODEN programmed), and VCC decreases below the trigger level, the Brown-out
Reset is immediately activated. When VCC increases above the trigger level, the Brown-out
Reset is deactivated after a delay. The delay is defined by the user in the same way as the delay
of POR signal, in Table 29. The trigger level for the BOD can be selected by the fuse
BODLEVEL to be 2.7V (BODLEVEL unprogrammed), or 4.0V (BODLEVEL programmed). The
trigger level has a hysteresis of 50 mV to ensure spike free Brown-out Detection.
The BOD circuit will only detect a drop in VCC if the voltage stays below the trigger level for lon-
ger than tBOD given in Table 16.
Figure 29. Brown-out Reset During Operation
Watchdog Reset
When the Watchdog times out, it will generate a short reset pulse of one CK cycle duration. On
the falling edge of this pulse, the delay timer starts counting the Time-out period tTOUT. Refer to
page 78 for details on operation of the Watchdog.
Figure 30. Watchdog Time-out
VCC
RESET
TIME-OUT
INTERNAL
RESET
VBOT-
VBOT+
tTOUT
1 CK Cycle
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