参数资料
型号: ATMEGA329V-8MUR
厂商: Atmel
文件页数: 114/146页
文件大小: 0K
描述: MCU AVR 32K FLASH 8MHZ 64QFN
产品培训模块: megaAVR Introduction
标准包装: 4,000
系列: AVR® ATmega
核心处理器: AVR
芯体尺寸: 8-位
速度: 8MHz
连通性: SPI,UART/USART,USI
外围设备: 欠压检测/复位,LCD,POR,PWM,WDT
输入/输出数: 54
程序存储器容量: 32KB(16K x 16)
程序存储器类型: 闪存
EEPROM 大小: 1K x 8
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 1.8 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: 64-VFQFN 裸露焊盘
包装: 带卷 (TR)
其它名称: ATMEGA329V-8MUR-ND
ATMEGA329V-8MURTR
43
2552K–AVR–04/11
ATmega329/3290/649/6490
Figure 10-3. MCU Start-up, RESET Extended Externally
10.4
External Reset
An External Reset is generated by a low level on the RESET pin. Reset pulses longer than the
minimum pulse width (see “System and Reset Characteristics” on page 330) will generate 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 10-4. External Reset During Operation
10.5
Brown-out Detection
ATmega329/3290/649/6490 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+ = VBOT + 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
10-5), the Brown-out Reset is immediately activated. When V
CC increases above the trigger
level (V
BOT+ in Figure 10-5), 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
RESET
TIME-OUT
INTERNAL
RESET
t
TOUT
V
POT
V
RST
VCC
CC
相关PDF资料
PDF描述
D38999/20WC98SA CONN RCPT 10POS WALL MNT W/SCKT
MS27508E16B55P CONN RCPT 55POS BOX MNT W/PINS
MS27508E16F55P CONN RCPT 55POS BOX MNT W/PINS
MS27474T18F35P CONN RCPT 66POS JAM NUT W/PINS
MS27484T18B11P CONN PLUG 11POS STRAIGHT W/PINS
相关代理商/技术参数
参数描述
ATMEGA32A 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 32K Bytes In-System Programmable Flash
ATMEGA32A_09 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 32K Bytes In-System Programmable Flash
ATMEGA32A_1 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 32K Bytes In-System Programmable Flash
ATMEGA32A-AN 功能描述:8位微控制器 -MCU AVR 32KB FL 1KB EE 2KB SRAM 16MHz Grn RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ATMEGA32A-ANR 功能描述:8位微控制器 -MCU AVR 32KB FL 1KB EE 2KB SRAM 16MHz Grn RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT