M41ST84W datasheet(25/29 Pages) STMICROELECTRONICS

Part #	M41ST84W

Description	3.0/3.3V I2C Serial RTC with Supervisory Functions

PDF	29 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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M41ST84W

Figure 19. Power Down/Up Mode AC Waveforms

Table 14. Power Down/Up AC Characteristics

Note: 1. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 2.7 to 3.6V (except where noted).

2. VPFD(max) to VPFD(min) fall time of less than tF may result in deselection/write protection not occurring until 200µs after VCC passes

VPFD(min).

3. VPFD(min) to VSS fall time of less than tFB may cause corruption of RAM data.

4. Programmable (see Table 7., page 22)

Symbol

Parameter(1)

Min

Typ

Max

Unit

(2)

VPFD(max) to VPFD(min) VCC Fall Time

300

µs

tFB

(3)

VPFD(min) to VSS VCC Fall Time

µs

tPFD

PFI to PFO Propagation Delay

µs

VPFD(min) to VPFD(max) VCC Rise Time

µs

tRB

VSS to VPFD(min) VCC Rise Time

1µs

trec(4)

Power up Deselect Time

200

AI03681

VCC

INPUTS

(PER CONTROL INPUT)

OUTPUTS

DON'T CARE

HIGH-Z

tFB

tRB

tDR

VALID

(PER CONTROL INPUT)

RECOGNIZED

VPFD (max)

VPFD (min)

VSO

tREC

RST

PFO

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