M48T86PC1 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M48T86PC1

5.0 V PC real-time clock

STMicroelectronics 

M48T86

DC and AC parameters

Figure 14. Power down/up mode AC waveforms

VCC

4.5V

VPFD

VSO

tF

tR

trec

E

AI01646

t(s) Table 13. Power down/up mode AC characteristics

uc Symbol

Parameter(1)

Min

Max

Unit

rod ) tF(2)

VCC fall time

300

µs

P t(s tR

VCC rise time

100

µs

lete uc trec

VPFD to E high

20

200

ms

d 1. Valid for ambient operating temperature: TA = 0 to 70°C; VCC = 4.5 to 5.5 V (except where noted).

so ro 2. VCC fall time of less than tF may result in deselection/write protection not occurring until 200 µs after VCC passes VPFD.

b P P

- O te Table 14. Power down/up trip points DC characteristics

) le Symbol

Parameter(1)(2)

Min

Typ

Max

Unit

t(s so VPFD Power-fail deselect voltage

4.0

4.35

c b VSO Battery backup switchover voltage

3.0

du - O tDR(3) Expected data retention time

10

ro ) 1. Valid for ambient operating temperature: TA = 0 to 70°C; VCC = 4.5 to 5.5 V (except where noted).

P t(s 2. All voltages referenced to VSS.

OObbssoolleettee Produc 3. At 25°C, VCC = 0 V.

V

V

YEARS

27/36

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