X24320

13

SYMBOL TABLE

WAVEFORM

INPUTS

OUTPUTS

Must be

steady

Will be

steady

May change

from Low to

High

Will change

from Low to

High

May change

from High to

Low

Will change

from High to

Low

Don’t Care:

Changes

Allowed

Changing:

State Not

Known

N/A

Center Line

is High

The write cycle time is the time from a valid stop condition of a write sequence to the end of the internal erase/write cycle.

During the write cycle, the X24320 bus interface circuits are disabled, SDA is allowed to remain HIGH, and the device does

not respond to its slave address.

Bus Timing

t

SU:STA

t

HD:STA

t

HD:DAT

t

SU:DAT

t

LOW

t

SU:STO

t

R

t

BUF

SCL

SDA IN

SDA OUT

t

DH

t

AA

t

F

t

HIGH

7035 FM 14

Write Cycle Limits

7003 FRM T11

Symbol

Parameter

Min.

Typ.

(5)

Max.

Units

Write Cycle Time

5

10

ms

SCL

SDA

8th BIT

WORD n

ACK

t

WC

STOP

CONDITION

START

CONDITION

7035 FM 15

Guidelines for Calculating Typical Values of

Bus Pull-Up Resistors

120

100

80

40

60

20

20

40

60

80 100120

0

0

BUS CAPACITANCE (pF)

MIN.

RESISTANCE

MAX.

RESISTANCE

R

MAX

=

C

BUS

t

R

R

MIN

=

I

OL MIN

V

CC MAX

=1.8KΟ

7035 FM 16

Bus Timing

time the device requires to automatically complete the internal write operation.