M48T201Y datasheet(30/37 Pages) STMICROELECTRONICS

部件名	M48T201Y

功能描述	5.0 or 3.3 V TIMEKEEPER® supervisor

PDF	37 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

30 / 37 page

DC and AC parameters

M48T201Y, M48T201V

30/37

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 5.5 V or 3.0 to 3.6 V (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 200 µs 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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