参数资料
型号: ATTINY15L-1SI
厂商: Atmel
文件页数: 9/85页
文件大小: 0K
描述: IC AVR MCU 1K FLASH 2.7V SO8
标准包装: 95
系列: AVR® ATtiny
核心处理器: AVR
芯体尺寸: 8-位
速度: 1.6MHz
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 6
程序存储器容量: 1KB(512 x 16)
程序存储器类型: 闪存
EEPROM 大小: 64 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.209",5.30mm 宽)
包装: 管件
17
ATtiny15L
1187H–AVR–09/07
Brown-out Detection
ATtiny15L has an On-chip Brown-out Detection (BOD) circuit for monitoring the V
CC
level during the operation. The BOD circuit can be enabled/disabled by the fuse
BODEN. When BODEN is enabled (BODEN programmed), and V
CC decreases below
the trigger level, the Brown-out Reset is immediately activated. When V
CC 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 5. 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 V
CC if the voltage stays below the trigger level
for longer than 3 s for trigger level 4.0V, 7 s for trigger level 2.7V (typical values).
Figure 16. Brown-out Reset during Operation
Note:
1. The hysteresis on V
BOT: VBOT+ = VBOT + 25 mV, VBOT- = VBOT - 25 mV.
Watchdog Reset
When the Watchdog times out, it will generate a short reset pulse of one CK cycle dura-
tion. On the falling edge of this pulse, the delay timer starts counting the Time-out period
t
TOUT. Refer to page 34 for details on operation of the Watchdog Timer.
Figure 17. Watchdog Reset during Operation
VCC
RESET
TIME-OUT
INTERNAL
RESET
VBOT-
VBOT+
tTOUT
1 CK Cycle
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