M48T86PC1TR(2007) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M48T86PC1TR
(Rev.:2007)

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

Table 13. Power down/up mode AC characteristics

Symbol

Parameter(1)

Min

Max

tF(2)

VCC fall time

300

tR

VCC rise time

100

trec

VPFD to E high

20

200

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

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

Table 14. Power down/up trip points DC characteristics

Symbol

Parameter(1)(2)

Min

Typ

VPFD Power-fail deselect voltage

4.0

VSO Battery back-up switchover voltage

3.0

tDR(3) Expected data retention time

10

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

2. All voltages referenced to VSS.

3. At 25°C, VCC = 0V.

Max

4.35

AI01646

Unit

µs

µs

ms

Unit

V

V

YEARS

27/36

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