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AT89C5131-RDTIL Folha de dados(PDF) 163 Page - ATMEL Corporation

Nome de Peças AT89C5131-RDTIL
Descrição Electrónicos  8-bit Flash Microcontroller with Full Speed USB Device
PDF  176 Pages
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Fabricante Electrônico  ATMEL [ATMEL Corporation]
Página de início  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5131-RDTIL Folha de dados(HTML) 163 Page - ATMEL Corporation

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AT89C5131
4136B–USB–09/03
Shift Register Timing Waveform
External Clock Drive
Characteristics (XTAL1)
Table 121. AC Parameters
External Clock Drive
Waveforms
AC Testing Input/Output
Waveforms
AC inputs during testing are driven at V
CC - 0.5 for a logic “1” and 0.45V for a logic “0”.
Timing measurement are made at V
IH min for a logic “1” and VIL max for a logic “0”.
Float Waveforms
For timing purposes as port pin is no longer floating when a 100 mV change from load
voltage occurs and begins to float when a 100 mV change from the loaded VOH/VOL level
occurs. IOL/IOH ≥ ±20 mA.
VALID
VALID
VALID
VALID
VALID
VALID
INPUT DATA
VALID
01
23
45
6
8
7
ALE
CLOCK
OUTPUT DATA
WRITE to SBUF
CLEAR RI
T
XLXL
T
QVXH
TXHQX
T
XHDV
T
XHDX
SET TI
SET RI
INSTRUCTION
01
2345
6
7
VALID
Symbol
Parameter
Min
Max
Units
T
CLCL
Oscillator Period
25
ns
T
CHCX
High Time
5
ns
T
CLCX
Low Time
5
ns
T
CLCH
Rise Time
5
ns
T
CHCL
Fall Time
5
ns
T
CHCX/TCLCX
Cyclic ratio in X2 mode
40
60
%
VCC-0.5V
0.45V
0.7V
CC
0.2VCC-0.1
T
CHCL
T
CLCX
T
CLCL
T
CLCH
T
CHCX
INPUT/OUTPUT
0.2 V
CC + 0.9
0.2 V
CC - 0.1
V
CC -0.5V
0.45V
FLOAT
V
OH - 0.1 V
V
OL + 0.1 V
VLOAD
V
LOAD + 0.1 V
V
LOAD - 0.1 V



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