M48T201V datasheet(29/35 Pages) STMICROELECTRONICS

No de pièce	M48T201V

Description	5.0 or 3.3V TIMEKEEPER짰 supervisor

PDF	35 Pages

Scroll/Zoom	100%

Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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29 / 35 page

M48T201Y, M48T201V

DC and AC parameters

29/35

Figure 14.

Power down/up mode AC waveforms

Table 14.

Power down/up mode AC characteristic

Symbol

Parameter(1)

Valid for Ambient Operating Temperature: TA = 0 to 70°C; VCC = 4.5 to 5.5V or 3.0 to 3.6V (except where noted).

Min

Max

Unit

(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).

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

300

µs

tFB

(3)

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

VPFD (min) to VSS VCC Fall Time

M48T201Y

µs

M48T201V

150

µs

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

µs

tREC

VPFD (max) to RST High

200

tRB

VSS to VPFD (min) VCC Rise Time

µs

AI03519

VCC

INPUTS

RST

OUTPUTS

DON'T CARE

HIGH-Z

tFB

tREC

tRB

VALID

VPFD (max)

VPFD (min)

VSO

VALID

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