參數(shù)資料
型號(hào): ATMEGA164P-B15AZ
廠商: Atmel
文件頁(yè)數(shù): 41/70頁(yè)
文件大?。?/td> 0K
描述: IC MCU 8BIT 16KB FLASH 44TQFP
標(biāo)準(zhǔn)包裝: 1,500
系列: AVR® ATmega
核心處理器: AVR
芯體尺寸: 8-位
速度: 16MHz
連通性: I²C,SPI,UART/USART
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲(chǔ)器容量: 16KB(8K x 16)
程序存儲(chǔ)器類型: 閃存
EEPROM 大小: 512 x 8
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 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 ~ 125°C
封裝/外殼: 44-TQFP
包裝: 帶卷 (TR)
其它名稱: ATMEGA164P-B15AZ-ND
30
7674F–AVR–09/09
ATmega164P/324P/644P
7.1.3
Flash Clock – clk
FLASH
The Flash clock controls operation of the Flash interface. The Flash clock is usually active simul-
taneously with the CPU clock.
7.1.4
Asynchronous Timer Clock – clk
ASY
The Asynchronous Timer clock allows the Asynchronous Timer/Counter to be clocked directly
from an external clock or an external 32 kHz clock crystal. The dedicated clock domain allows
using this Timer/Counter as a real-time counter even when the device is in sleep mode.
7.1.5
ADC Clock – clk
ADC
The ADC is provided with a dedicated clock domain. This allows halting the CPU and I/O clocks
in order to reduce noise generated by digital circuitry. This gives more accurate ADC conversion
results.
7.2
Clock Sources
The device has the following clock source options, selectable by Flash Fuse bits as shown
below. The clock from the selected source is input to the AVR clock generator, and routed to the
appropriate modules.
Note:
1. For all fuses “1” means unprogrammed while “0” means programmed.
7.2.1
Default Clock Source
The device is shipped with internal RC oscillator at 8.0MHz and with the fuse CKDIV8 pro-
grammed, resulting in 1.0MHz system clock. The startup time is set to maximum and time-out
period enabled. (CKSEL = "0010", SUT = "10", CKDIV8 = "0"). The default setting ensures that
all users can make their desired clock source setting using any available programming interface.
Table 7-1.
Device Clocking Options Select
Device Clocking Option
CKSEL3..0
Low Power Crystal Oscillator
1111 - 1000
Full Swing Crystal Oscillator
0111 - 0110
Low Frequency Crystal Oscillator
0101 - 0100
Internal 128 kHz RC Oscillator
0011
Calibrated Internal RC Oscillator
0010
External Clock
0000
Reserved
0001
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