参数资料
型号: ATTINY84A-CCU
厂商: Atmel
文件页数: 59/135页
文件大小: 0K
描述: IC MCU 8BIT 8K FLASH 15UFBGA
标准包装: 490
系列: AVR® ATtiny
核心处理器: AVR
芯体尺寸: 8-位
速度: 20MHz
连通性: USI
外围设备: 欠压检测/复位,POR,PWM,温度传感器,WDT
输入/输出数: 12
程序存储器容量: 8KB(4K x 16)
程序存储器类型: 闪存
EEPROM 大小: 512 x 8
RAM 容量: 512 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: 15-UFBGA
包装: 托盘
29
8183F–AVR–06/12
ATtiny24A/44A/84A
use with crystals are given in Table 6-9 below. For ceramic resonators, the capacitor values
given by the manufacturer should be used.
Notes:
1. This option should not be used with crystals, only with ceramic resonators.
The Oscillator can operate in three different modes, each optimized for a specific frequency
range. The operating mode is selected by fuses CKSEL[3:1] as shown in Table 6-9.
The CKSEL0 Fuse together with the SUT[1:0] Fuses select the start-up times as shown in Table
Notes:
1. When the BOD has been disabled by software, the wake-up time from sleep mode will be
approximately 60s to ensure that the BOD is working correctly before the MCU continues
executing code.
2. 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.
3. 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.
Table 6-9.
Crystal Oscillator Operating Modes
CKSEL[3:1]
Frequency Range (MHz)
Recommended C1 and C2 Value (pF)
100(1)
0.4 - 0.9
101
0.9 - 3.0
12 - 22
110
3.0 - 8.0
12 - 22
111
8.0 -
12 - 22
Table 6-10.
Start-up Times for the Crystal Oscillator Clock Selection
CKSEL0
SUT[1:0]
Start-up Time from
Power-down(1)
Additional Delay
from Reset
Recommended Usage
0
00
258 CK(2)
14CK + 4 ms
Ceramic resonator,
fast rising power
0
01
258 CK(2)
14CK + 64 ms
Ceramic resonator,
slowly rising power
010
1K CK(3)
14CK
Ceramic resonator,
BOD enabled
011
1K CK(3)
14CK + 4 ms
Ceramic resonator,
fast rising power
100
1K CK(3)
14CK + 64 ms
Ceramic resonator,
slowly rising power
1
01
16K CK
14CK
Crystal Oscillator,
BOD enabled
1
10
16K CK
14CK + 4 ms
Crystal Oscillator,
fast rising power
1
11
16K CK
14CK + 64 ms
Crystal Oscillator,
slowly rising power
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