參數(shù)資料
型號： AT90S4433-8AC
廠商： Atmel
文件頁數(shù)： 4/126頁
文件大?。?/td> 0K
描述： IC MCU 4K FLSH 8MHZ A/D 32TQFP
標(biāo)準(zhǔn)包裝： 250
系列： AVR® 90S
核心處理器： AVR
芯體尺寸： 8-位
速度： 8MHz
連通性： SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 20
程序存儲器容量： 4KB（2K x 16）
程序存儲器類型： 閃存
EEPROM 大小： 256 x 8
RAM 容量： 128 x 8
電壓 - 電源 (Vcc/Vdd)： 4 V ~ 6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 6x10b
振蕩器型： 外部
工作溫度： 0°C ~ 70°C
封裝/外殼： 32-TQFP
包裝： 托盤
101
AT90S/LS4433
1042H–AVR–04/03
Typical
Characteristics
The following charts show typical behavior. These figures are not tested during manu-
facturing. All current consumption measurements are performed with all I/O pins
configured as inputs and with internal pull-ups enabled. A sine wave generator with rail-
to-rail output is used as clock source.
The power consumption in Power-down mode is independent of clock selection.
The current consumption is a function of several factors, such as: operating voltage,
operating frequency, loading of I/O pins, switching rate of I/O pins, code executed and
ambient temperature. The dominating factors are operating voltage and frequency.
The current drawn from capacitive loaded pins may be estimated (for one pin) as
C
L VCC f, where CL = load capacitance, VCC = operating voltage and f = average
switching frequency of I/O pin.
The parts are characterized at frequencies higher than test limits. Parts are not guaran-
teed to function properly at frequencies higher than the ordering code indicates.
The difference between current consumption in Power-down mode with Watchdog
Timer enabled and Power-down mode with Watchdog Timer disabled represents the dif-
ferential current drawn by the Watchdog Timer.
The difference between Power-down mode with Brown-out Detector enabled and
Power-down mode with Watchdog Timer disabled represents the differential current
drawn by the Brown-out Detector.
Figure 70. Active Supply Current vs. Frequency
0
5
10
15
20
25
30
35
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
ACTIVE SUPPLY CURRENT vs. FREQUENCY
TA = 25C
VCC = 6V
VCC = 5.5V
VCC = 5V
VCC = 4.5V
VCC = 4V
VCC = 3.6V
VCC = 3.3V
VCC = 3.0V
VCC = 2.7V
Frequency (MHz)
I CC
(mA)
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