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AT89LP428 датащи(PDF) 133 Page - ATMEL Corporation

номер детали AT89LP428
подробное описание детали  8-bit Microcontroller with 4K/8K Bytes In-System Programmable Flash
PDF  149 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89LP428 датащи(HTML) 133 Page - ATMEL Corporation

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133
3654A–MICRO–8/09
AT89LP428/828
24.6
Serial Peripheral Interface Timing
The values shown in this table are valid for T
A = -40°C to 85°C and VCC = 2.4 to 5.5V, unless otherwise noted.
Table 24-4.
SPI Master Characteristics
Symbol
Parameter
Min
Max
Units
t
CLCL
Oscillator Period
50
ns
tSCK
Serial Clock Cycle Time
4tCLCL
ns
t
SHSL
Clock High Time
t
SCK/2 - 25
ns
tSLSH
Clock Low Time
tSCK/2 - 25
ns
tSR
Rise Time
25
ns
t
SF
Fall Time
25
ns
tSIS
Serial Input Setup Time
10
ns
tSIH
Serial Input Hold Time
10
ns
t
SOH
Serial Output Hold Time
10
ns
tSOV
Serial Output Valid Time
35
ns
Table 24-5.
SPI Slave Characteristics
Symbol
Parameter
Min
Max
Units
t
CLCL
Oscillator Period
50
ns
tSCK
Serial Clock Cycle Time
4tCLCL
ns
t
SHSL
Clock High Time
1.5 t
CLCL - 25
ns
t
SLSH
Clock Low Time
1.5 t
CLCL - 25
ns
tSR
Rise Time
25
ns
t
SF
Fall Time
25
ns
t
SIS
Serial Input Setup Time
10
ns
tSIH
Serial Input Hold Time
10
ns
t
SOH
Serial Output Hold Time
10
ns
t
SOV
Serial Output Valid Time
35
ns
tSOE
Output Enable Time
10
ns
t
SOX
Output Disable Time
25
ns
t
SSE
Slave Enable Lead Time
10
ns
tSSD
Slave Disable Lag Time
0
ns



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