AT90PWM2B-16SE ATMEL [ATMEL Corporation], AT90PWM2B-16SE Datasheet - Page 303

• Manufacturer Part Number: AT90PWM2B-16SE
• Description: 8-bit Microcontroller with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

26.6
4317J–AVR–08/10
SPI Timing Characteristics
See
Table 26-4.
Note:
Figure 26-3. SPI Interface Timing Requirements (Master Mode)
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
Figure 26-3
In SPI Programming mode the minimum SCK high/low period is:
- 2 t
- 3 t
(Data Output)
(Data Input)
(CPOL = 0)
(CPOL = 1)
CLCL
CLCL
SS high to tri-state
SCK to out high
SCK high/low
SCK to SS high
SS low to SCK
Rise/Fall time
Rise/Fall time
SCK high/low
SS low to out
SPI Timing Parameters
Description
MISO
MOSI
SCK period
SCK period
Out to SCK
SCK to out
SCK to out
for f
for f
SCK
SCK
and
SS
Setup
Setup
Hold
Hold
CK
CK
Figure 26-4
< 12 MHz
>12 MHz
(1)
6
4
MSB
5
for details.
MSB
Master
Master
Master
Master
Master
Master
Master
Master
Mode
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
7
4 • t
2 • t
2 • t
Min.
10
t
20
ck
...
ck
ck
ck
...
AT90PWM2/3/2B/3B
See
50% duty cycle
0.5 • t
Table 17-4
Typ.
3.6
10
10
15
10
10
15
10
2
sck
LSB
1
LSB
2
Max.
1.6
3
8
ns
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