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PCIF0 Folha de dados(PDF) 267 Page - ATMEL Corporation

Nome de Peças PCIF0
Descrição Electrónicos  High Performance, Low Power Atmel AVR 8-bit Microcontroller Advanced RISC Architecture
PDF  294 Pages
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Fabricante Electrônico  ATMEL [ATMEL Corporation]
Página de início  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

PCIF0 Folha de dados(HTML) 267 Page - ATMEL Corporation

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267
9219A–RFID–01/11
Atmel ATA5505 [Preliminary]
23.11 SPI Timing Characteristics
See Figure 23-6 and Figure 23-7 for details.
Note:
In SPI Programming mode the minimum SCK high/low period is:
- 2 t
CLCL for fCK < 12MHz
- 3 tCLCL for fCK >12MHz
Figure 23-6. SPI Interface Timing Requirements (Master Mode)
Table 23-12. SPI Timing Parameters
Description
Mode
Min.
Typ.
Max.
1
SCK period
Master
See Table 13-4
ns
2
SCK high/low
Master
50% duty cycle
3
Rise/Fall time
Master
3.6
4
Setup
Master
10
5
Hold
Master
10
6
Out to SCK
Master
0.5 • t
sck
7
SCK to out
Master
10
8
SCK to out high
Master
10
9
SS low to out
Slave
15
10
SCK period
Slave
4 • t
ck
11
SCK high/low (1)
Slave
2 • tck
12
Rise/Fall time
Slave
1.6
µs
13
Setup
Slave
10
ns
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
2 • t
ck
MOSI
(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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