M41T00CAP

DC and AC parameters

Table 9: Power down/up trip points DC characteristics

Sym

Parameter

(1)(2)

Min

Typ

Max

Unit

VPFD

Power-fail deselect

2.5

2.6

2.7

V

Hysteresis

25

mV

VSO

Battery backup switchover voltage

VBAT < VPFD

VBAT

V

VBAT > VPFD

VPFD

V

Hysteresis

40

mV

tDR

(3)

Expected data retention time

10

Years

Notes:

(1)

Valid for ambient operating temperature: TA = –40 to 85 °C; VCC = 2.7 to 5.5 V (except where noted).

(2)

All voltages referenced to VSS.

(3)

TA = 25°C, VCC = 0 V, oscillator on.

Figure 14: Bus timing requirements sequence

Table 10: AC characteristics

Sym

Parameter

(1)

Min

Typ

Max

Units

fSCL

SCL clock frequency

0

-

400

kHz

tLOW

Clock low period

1.3

-

µs

tHIGH

Clock high period

600

-

ns

tR

SDA and SCL rise time

-

300

ns

tF

SDA and SCL fall time

-

300

ns

tHD:STA

START condition hold time

(after this period the first clock pulse is

generated)

600

-

ns

tSU:STA

START condition setup time

(only relevant for a repeated start condition)

600

-

ns

tSU:DAT

(2)

Data setup time

100

-

ns

tHD:DAT

Data hold time

0

-

µs

tSU:STO

STOP condition setup time

600

-

ns

tBUF

Time the bus must be free before a new

transmission can start

1.3

-

µs

Notes:

(1)

Valid for ambient operating temperature: TA = 0 to 70 °C; VCC = 2.7 to 5.5 V (except where noted).

(2)

Transmitter must internally provide a hold time to bridge the undefined region (300 ns max) of the falling edge of SCL.

AI00589

S DA

P

tSU:S TO

tSU:S TA

tHD:S TA

Sr

SCL

tSU:DAT

tF

tHD:DAT

tR

tHIGH

tLOW

tHD:S TA

tBUF

S

P

DocID014557 Rev 6

19/24