M48T201VMH datasheet(27/33 Pages) STMICROELECTRONICS

Nome de Peças	M48T201VMH

Descrição Electrónicos	3.3V-5V TIMEKEEPER CONTROLLER

PDF	33 Pages

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Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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M48T201Y, M48T201V

Figure 15. Power Down/Up Mode AC Waveforms

Table 14. Power Down/Up Mode AC Characteristics

Note: 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).

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

es VPFD (min).

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

Symbol

Parameter(1)

Min

Max

Unit

(2)

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

300

µs

tFB

(3)

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

5µs

AI03519

VCC

INPUTS

RST

OUTPUTS

DON'T CARE

HIGH-Z

tFB

tREC

tRB

VALID

VPFD (max)

VPFD (min)

VSO

VALID

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