參數(shù)資料
型號: ATTINY43U-SU
廠商: Atmel
文件頁數(shù): 97/158頁
文件大小: 0K
描述: MCU AVR 4K FLASH 8MHZ 20-SOIC
產(chǎn)品培訓(xùn)模塊: ATtiny43U Overview
MCU Product Line Introduction
tinyAVR Introduction
標(biāo)準(zhǔn)包裝: 37
系列: AVR® ATtiny
核心處理器: AVR
芯體尺寸: 8-位
速度: 8MHz
連通性: USI
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 16
程序存儲(chǔ)器容量: 4KB(2K x 16)
程序存儲(chǔ)器類型: 閃存
EEPROM 大?。?/td> 64 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
包裝: 管件
產(chǎn)品目錄頁面: 613 (CN2011-ZH PDF)
配用: ATSTK600-TINYX3U-ND - STK600 SOCKET/ADAPTER TINYX3U
43
8048C–AVR–02/12
ATtiny43U
L, and may not work reliably if other inductance values are used. See “Boost Converter Compo-
The inductor must be able to tolerate the following input current:
... where
η is the efficiency of the converter at given voltages and load current. See “Boost Con-
The inductor must also be able to tolerate short peak currents. At steady state, i.e. when the
converter has stabilised after a constant load current has been introduced, the peak current is
calculated as follows:
... where D is the duty cycle and T
S the switching period of the boost converter. See “Boost Con-
verter Characteristics” on page 162 for limits. The steady-state duty cycle is calculated as
follows:
Overall efficiency of the boost converter is affected by the series resistance and the core loss of
the inductor.
8.6.2
Diode
It is recommended to use a Schottky diode with forward voltage, V
F, and reverse leakage cur-
rent, I
R, values as low as possible. This is because converter efficiency mainly depends on the
forward voltage of the diode when I
LOAD is at maximum and VBAT is at minimum. It should be
noted that the reverse leakage current easily becomes a dominant factor, especially in Active
Low Current Mode. For reference, see converter current consumption during Low Current Mode
The diode is subject to peak currents the same magnitude as the inductor. See “Inductor” on
It should be noted that reverse leakage current is a highly temperature dependent variable.
8.6.3
Input Capacitors
A voltage drop occurs between the voltage source and inductor L
1 because voltage sources are
not ideal and tracks have a non-zero resistance. The voltage drop is application specific and
depends on the quality of the voltage source, inductor current, track size and track length.
I
IN
V
CC
I
LOAD
×
V
BAT
η
×
--------------------------------
=
I
PEAK
V
BAT
T
S
D
×
L
------------------------------------
=
D
V
CC
V
BAT
-------------
1
2
---
I
LOAD
×
=
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ATTINY44 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
ATTINY44-15MZ 功能描述:8位微控制器 -MCU 4KB Flash 15MHz Auto 125-degrees C RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ATTINY44-15SSZ 功能描述:8位微控制器 -MCU 4KB Flash 15MHz Auto 125-degrees C RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ATTINY441-MMH 制造商:Atmel Corporation 功能描述:16MHZ, 3X3MM, 20 VQFN, IND. GRADE, GREEN - Bulk 制造商:Atmel Corporation 功能描述:IC MCU 8BIT 4KB FLASH 20VQFN