参数资料
型号: R5F2L3ACCNFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件页数: 37/74页
文件大小: 959K
代理商: R5F2L3ACCNFP
43
2588F–AVR–06/2013
ATtiny261/461/861
8.1.2
External Reset
An External Reset is generated by a low level on the RESET pin if enabled. Reset pulses longer
than the minimum pulse width (see “System and Reset Characteristics” on page 190) will gener-
ate a reset, even if the clock is not running. Shorter pulses are not guaranteed to generate a
reset. When the applied signal reaches the Reset Threshold Voltage – V
RST – on its positive
edge, the delay counter starts the MCU after the Time-out period – t
TOUT – has expired.
Figure 8-4.
External Reset During Operation
8.1.3
Brown-out Detection
ATtiny261/461/861 has an On-chip Brown-out Detection (BOD) circuit for monitoring the V
CC
level during operation by comparing it to a fixed trigger level. The trigger level for the BOD can
be selected by the BODLEVEL Fuses. The trigger level has a hysteresis to ensure spike free
Brown-out Detection. The hysteresis on the detection level should be interpreted as V
BOT+ =
V
BOT + VHYST/2 and VBOT- = VBOT - VHYST/2.
When the BOD is enabled, and V
CC decreases to a value below the trigger level (VBOT- in Figure
8-5), the Brown-out Reset is immediately activated. When V
CC increases above the trigger level
(V
BOT+ in Figure 8-5), the delay counter starts the MCU after the Time-out period tTOUT has
expired.
The BOD circuit will only detect a drop in V
CC if the voltage stays below the trigger level for lon-
ger than t
Figure 8-5.
Brown-out Reset During Operation
CC
VCC
RESET
TIME-OUT
INTERNAL
RESET
VBOT-
VBOT+
tTOUT
相关PDF资料
PDF描述
R5F2L38ACNFA 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP80
R5F2L38CCNFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP80
R5F2L387CDFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP80
R5F2L387CNFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP80
R5F2L368CDFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP64
相关代理商/技术参数
参数描述
R5F2L3ACCNFP#30 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 128KB FLASH 100LQFP
R5F2L3ACCNFP#U1 制造商:Renesas Electronics Corporation 功能描述:
R5F2L3ACCNFP#V0 功能描述:MCU 1KB FLASH 128K ROM 100-LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:R8C/Lx/3AC 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI,I²C,UART/USART 外围设备:POR,PWM,WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC(J 形引线) 包装:带卷 (TR)
R5F2L3ACMDFA#U0 制造商:Renesas Electronics Corporation 功能描述:R8C/L3AM 128+4/10 100QFP 14X20 制造商:Renesas Electronics Corporation 功能描述:R8C/L3AM 128+4/10 100QFP 14X20 -40 TO +85 - Trays 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 128KB FLASH 100LQFP
R5F2L3ACMNFA#U0 制造商:Renesas Electronics Corporation 功能描述:R8C/L3AM 128+4/10 100QFP 14X20 制造商:Renesas Electronics Corporation 功能描述:R8C/L3AM 128+4/10 100QFP 14X20 -20 TO +85 - Trays 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 128KB FLASH 100LQFP 制造商:Renesas Electronics Corporation 功能描述:MCU,R8C,16bit,20MHz,128KB Flash,QFP100