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AT90SCR100 Datasheet(PDF) 413 Page - ATMEL Corporation

Part # AT90SCR100
Description  8-bit Microcontroller for Smart Card Readers
PDF  433 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90SCR100 Datasheet(HTML) 413 Page - ATMEL Corporation

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413
TPR0327AY–SMS–30Jan09
AT90SCR100
31.5.3
SPI Timing Characteristics TBC/TBD
See Figure 31-2 and Figure 31-3 for details.
Notes:
1. In SPI Programming mode the minimum SCK high/low period is:
- 2 tCLCL for fCK < 12 MHz
- 3 tCLCL for fCK > 12 MHz
2. These values are for information only. They are not tested to production test flow. They are deduced from characterization
session.
Figure 31-2.
SPI Interface Timing Requirements (Master Mode)
Table 31-4.
SPI Timing Parameters(2)
Description
Mode
Min
Typ
Max
1
SCK period
Master
See Table 20-4
ns
2
SCK high/low
Master
50% duty cycle
3
Rise/Fall time
Master
3.6
4
Setup
Master
10
5Hold
Master
10
6
Out to SCK
Master
0.5 • tsck
7
SCK to out
Master
10
8
SCK to out high
Master
10
9SS low to out
Slave
15
10
SCK period
Slave
4 • tck
11
SCK high/low(1)
Slave
2 • tck
12
Rise/Fall time
Slave
1600
13
Setup
Slave
10
14
Hold
Slave
tck
15
SCK to out
Slave
15
16
SCK to SS high
Slave
20
17
SS high to tri-state
Slave
10
18
SS low to SCK
Slave
20
MO SI
(Data Output)
SCK
(CPOL = 1)
MISO
(Data Input)
SCK
(CPOL = 0)
SS
MSB
LSB
LSB
MSB
...
...
61
22
3
45
8
7



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