X24012

11

WRITE CYCLE LIMITS

Symbol

Parameter

Min.

Typ.

(5)

Max.

Units

t

WR

(6)

Write Cycle Time

5

10

ms

3847 PGM T10

The write cycle time is the time from a valid stop

condition of a write sequence to the end of the internal

erase/program cycle. During the write cycle, the X24012

bus interface circuits are disabled, SDA is allowed to remain

high, and the device does not respond to its slave

address.

Write Cycle Timing

3847 FHD F04

Guidelines for Calculating Typical Values of Bus

Pull-Up Resistors

SYMBOL TABLE

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

Impedance

OUTPUTS

INPUTS

WAVEFORM

3847 FHD F16

120

100

80

40

60

20

20 40

60

80100120

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

requires to perform the internal write operation.

SDA

8th BIT

WORD n

ACK

t

WR

STOP

CONDITION

START

CONDITION

X24012

ADDRESS

SCL