M41T81M6(2006) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M41T81M6
(Rev.:2006)

Serial access Real-Time Clock with alarm

STMicroelectronics 

DC and AC parameters

M41T81

Table 11. Power down/up AC characteristics

Symbol

Parameter(1) (2)

Min

Typ

Max

Unit

tPD

SCL and SDA at VIH before power down

0

trec

SCL and SDA at VIH after power Up

10

1. VCC fall time should not exceed 5mV/µs.

2. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 2.0 to 5.5V (except where noted).

Table 12. Power down/up trip points DC characteristics

Sym

Parameter(1) (2)

Min

Typ

nS

µS

Max

Unit

VSO Battery back-up switchover voltage

VBAT – 0.80 VBAT – 0.50 VBAT – 0.30 V

1. All voltages referenced to VSS.

2. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 2.0 to 5.5V (except where noted).

Figure 16. Bus timing requirements sequence

SDA

tBUF

SCL

P

tHD:STA

tR

tF

tHIGH

S

tLOW

tSU:DAT

tHD:DAT

tHD:STA

tSU:STA

SR

tSU:STO

P

AI00589

24/30

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