Rainbow-electronics ATmega64M1 Manuel d'utilisateur télécharger pdf (Page 314)

100

101

314

8209A–AVR–08/09

ATmega16M1/32M1/64M1

29.7 PLL Characteristics

Note: While connected to external clock or external oscillator, PLL Input Frequency must be selected to

provide outputs with frequency in accordance with driven parts of the circuit (CPU core, PSC...)

29.8 SPI Timing Characteristics

See Figure 29-3 and Figure 29-4 for details.

Note: In SPI Programming mode the minimum SCK high/low period is:

- 2 t

CLCL

for f

< 12 MHz

- 3 t

CLCL

for f

>12 MHz

Table 2. PLL Characteristics - V

= 2.7V to 5.5V (unless otherwise noted)

Symbol Parameter Min. Typ. Max. Units

PLL

Input Frequency 0.5 1 2 MHz

PLL

PLL Factor 64

PLL

Lock-in Time 64 µS

Table 3. SPI Timing Parameters

Description Mode Min. Typ. Max.

1 SCK period Master See Table 19-5

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

11 SCK high/low

(1)

Slave 2 • t

12 Rise/Fall time Slave 1600

13 Setup Slave 10

14 Hold Slave t

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

1 2 ... 309 310 311 312 313 314 315 316 317 318 319 ... 342 343

Commentaires sur ces manuels

Pas de commentaire

Rainbow-electronics ATmega64M1 Manuel d'utilisateur Page 314

Commentaires sur ces manuels

Produits connexes et manuels pour Capteurs Rainbow-electronics ATmega64M1