參數(shù)資料
型號(hào)： ATMEGA329V-8MUR
廠商： Atmel
文件頁數(shù)： 43/146頁
文件大?。?/td> 0K
描述： MCU AVR 32K FLASH 8MHZ 64QFN
產(chǎn)品培訓(xùn)模塊： megaAVR Introduction
標(biāo)準(zhǔn)包裝： 4,000
系列： AVR® ATmega
核心處理器： AVR
芯體尺寸： 8-位
速度： 8MHz
連通性： SPI，UART/USART，USI
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，LCD，POR，PWM，WDT
輸入/輸出數(shù)： 54
程序存儲(chǔ)器容量： 32KB（16K x 16）
程序存儲(chǔ)器類型： 閃存
EEPROM 大?。?/td> 1K x 8
RAM 容量： 2K x 8
電壓 - 電源 (Vcc/Vdd)： 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 64-VFQFN 裸露焊盤
包裝： 帶卷 (TR)
其它名稱： ATMEGA329V-8MUR-ND
ATMEGA329V-8MURTR
29
2552K–AVR–04/11
ATmega329/3290/649/6490
Note:
1. These options should only be used when not operating close to the maximum frequency of the
device, and only if frequency stability at start-up is not important for the application. These
options are not suitable for crystals.
2. These options are intended for use with ceramic resonators and will ensure frequency stability
at start-up. They can also be used with crystals when not operating close to the maximum fre-
quency of the device, and if frequency stability at start-up is not important for the application.
8.4
Low-frequency Crystal Oscillator
To use a 32.768kHz watch crystal as the clock source for the device, the low-frequency crystal
Oscillator must be selected by setting the CKSEL Fuses to “0110” or “0111”. The crystal should
be connected as shown in Figure 8-2. When this Oscillator is selected, start-up times are deter-
mined by the SUT Fuses as shown in Table 8-5 and CKSEL1..0 as shown in Table 8-6.
Note:
1. This option should only be used if frequency stability at start-up is not important for the
application
8.5
Calibrated Internal RC Oscillator
The calibrated Internal RC Oscillator by default provides a 8.0MHz clock. The frequency is nom-
inal value at 3V and 25°C. The device is shipped with the CKDIV8 Fuse programmed. See
011
1K CK(2)
14CK + 4.1ms
Ceramic resonator,
fast rising power
100
1K CK(2)
14CK + 65ms
Ceramic resonator,
slowly rising power
1
01
16K CK
14CK
Crystal Oscillator,
BOD enabled
1
10
16K CK
14CK + 4.1ms
Crystal Oscillator, fast
rising power
1
11
16K CK
14CK + 65ms
Crystal Oscillator,
slowly rising power
Table 8-4.
Start-up Times for the Crystal Oscillator Clock Selection (Continued)
CKSEL0
SUT1..0
Start-up Time from
Power-down and
Power-save
Additional Delay
from Reset
(V
CC = 5.0V)
Recommended
Usage
Table 8-5.
Start-up Times for the Low-frequency Crystal Oscillator Clock Selection
SUT1..0
Additional Delay from Reset (V
CC = 5.0V)
Recommended Usage
00
14CK
Fast rising power or BOD enabled
01
14CK + 4.1ms
Slowly rising power
10
14CK + 65ms
Stable frequency at start-up
11
Reserved
Table 8-6.
Start-up Times for the Low-frequency Crystal Oscillator Clock Selection
CKSEL3..0
Start-up Time from
Power-down and Power-save
Recommended Usage
0110(1)
1K CK
0111
32K CK
Stable frequency at start-up
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