X76F640

13

CS Timing Diagram (Selecting/Deselecting the Part)

RST Timing Diagram – Response to a Synchronous Reset

GUIDELINES FOR CALCULATING TYPICAL VALUES OF BUS PULL UP RESISTORS

SCL

CS

from

master

7025 FM 20

DATA BIT (1)

DATA BIT (2)

1st

clk

pulse

2nd

clk

pulse

3rd

clk

pulse

CS

I/O

CLK

RST

DATA BIT (N)

DATA BIT (N+1)

CS

I/O

CLK

RST

(N+2)

7025 FM 21

100

80

60

40

20

Bus capacitance in pF

20

40

60

80

100

R

MIN

V

CCMAX

I

OLMIN

--------------------------

1.8

K

Ω

=

=

R

MAX

t

R

C

BUS

------------------

=

7025 FM 22