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ATmega324P Datasheet(PDF) 333 Page - ATMEL Corporation

Part # ATmega324P
Description  8-bit Microcontroller with 16/32/64K Bytes In-System Programmable Flash
PDF  377 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega324P Datasheet(HTML) 333 Page - ATMEL Corporation

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333
7674F–AVR–09/09
ATmega164P/324P/644P
26.5
SPI Timing Characteristics
See Figure 26-3 on page 333 and Figure 26-4 on page 334 for details.
Note:
1. In SPI Programming mode the minimum SCK high/low period is:
- 2 t
CLCL for fCK < 12 MHz
- 3 tCLCL for fCK > 12 MHz
2. Values indicated represent typical data from design simulation.
Figure 26-3. SPI Interface Timing Requirements (Master Mode)
Table 26-6.
SPI Timing Parameters
(2)
Description
Mode
Min
Typ
Max
1
SCK period
Master
See Table 16-5
ns
2
SCK high/low
Master
50% duty cycle
3
Rise/Fall time
Master
TBD
4
Setup
Master
10
5
Hold
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
TBD
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
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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