參數資料
型號: AT43USB353M-AC
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
中文描述: 8-BIT, MROM, 24 MHz, RISC MICROCONTROLLER, PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, PLASTIC, MS-026BBC, LQFP-48
文件頁數: 86/95頁
文件大?。?/td> 568K
代理商: AT43USB353M-AC
86
AT43USB353M
3307B–USB–4/04
Table 30.
PA and PD
Note:
VCEXT is the voltage of CEXT1, CEXT2 and CEXTA.
Note:
XTAL2 must not be used to drive other circuitry.
Note:
1. With external 27
series resistor.
Symbol
Parameter
Condition
Min
Max
Unit
V
OL2
Output Low Level, PA and PD
IOL = 2 mA
0.5
V
V
OH2
Output High Level
IOH = 2mA
VCEXT - 0.4
V
V
IL2
Input Low Level
-0.3
0.3 VCEXT
V
V
IH2
Input High Level
0.7 VCEXT
VCEXT + 0.3
V
RPU
PC Pull-up resistor current
V = 0
90
280
μA
C
Input/Output capacitance
1 MHz
10
pF
Table 31.
Oscillator Signals: XTAL1, XTAL2
Symbol
Parameter
Condition
Min
Max
Unit
V
LH
OSC1 switching level
0.47
1.20
V
V
HL
OSC1 switching level
0.67
1.44
V
CX1
Input capacitance, XTAL1
10
pF
CX2
Output capacitance, XTAL2
10
pF
C12
OSC1/2 capacitance
5
pF
t
SU
Start-up time
6 MHz, fundamental
2
ms
DL
Drive level
50
μW
Table 32.
USB Driver Characteristics, Full Speed Operation
Symbol
Parameter
Condition
Min
Max
Unit
TR
Rise time
C
L
= 50 pF
4
20
ns
TF
Fall time
C
L
= 50 pF
4
20
ns
TRFM
TR/TF matching
90
110
%
ZDRV
Driver output resistance
(1)
Steady state drive
28
44
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