24C01B/02B

 2004 Microchip Technology Inc.

Preliminary

DS21233B-page 3

FIGURE 1-2:

BUS TIMING DATA

TABLE 1-2:

AC CHARACTERISTICS

All Parameters apply across the

specified operating ranges unless

otherwise noted

Vcc = 4.5V to 5.5V

Automotive (E):

Tamb = -40°C to +125°C,

Parameter

Symbol

Min.

Max.

Units

Remarks

Clock frequency

—

100

kHz

Clock high time

4000

—

ns

Clock low time

4700

—

ns

SDA and SCL rise time

—

1000

ns

(Note 1)

SDA and SCL fall time

—

300

ns

(Note 1)

START condition hold time

4000

—

ns

After this period the first clock pulse is

generated

START condition setup time

4700

—

ns

Only relevant for repeated

START condition

Data input hold time

0—

ns

(Note 2)

Data input setup time

250

—

ns

STOP condition setup time

4000

—

ns

Output valid from clock

—

3500

ns

(Note 2)

Bus free time

4700

—

ns

Time the bus must be free before a new

transmission can start

—

250

ns

(Note 1), CB ð 100 pF

Input filter spike suppression

(SDA and SCL pins)

—50

ns

(Note 3)

Write cycle time

—

10

ms

Byte or Page mode

Endurance

—

1M

—

cycles

25°C, Vcc = 5.0V, Block Mode (Note 4)

Note 1: Not 100% tested. CB = total capacitance of one bus line in pF.

2: As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region

(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of START or STOP conditions.

spike suppression. This eliminates the need for a TI specification for standard operation.

4: This parameter is not tested but guaranteed by characterization. For endurance estimates in a specific

application, please consult the Total Endurance Model which can be obtained on our BBS or website.

SCL

SDA

IN

SDA

OUT