M41T94MH6TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M41T94MH6TR

Serial Real Time Clock with 44Bytes NVRAM and Reset

STMicroelectronics 

DC and AC parameters

Figure 17. Power down/up mode AC Waveforms

VCC

VPFD (max)

VPFD (min)

VSO

tF

tFB

tRB

tDR

INPUTS

RECOGNIZED

DON'T CARE

M41T94

tR

tREC

RECOGNIZED

RST

OUTPUTS

VALID

(PER CONTROL INPUT)

HIGH-Z

VALID

(PER CONTROL INPUT)

AI03687

Table 15. Power Down/Up AC Characteristics

Symbol

Parameter(1)

Min

Typ

Max Unit

tF(2)

tFB(3)

tR

tRB

tREC(4)

tDR

VPFD (max) to VPFD (min) VCC fall time

VPFD (min) to VSS VCC fall time

VPFD (min) to VPFD (max) VCC rise time

VSS to VPFD (min) VCC rise time

Power up deselect time

Expected data retention time

300

10

10

1

40

10(5)

µs

µs

µs

µs

200

ms

YEARS

1. Valid for ambient operating temperature: TA = –40 to 85°C; VCC = 2.7 to 5.5V (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 passes VPFD (min).

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

4. Programmable (seeTable 8 on page 28).

5. At 25°C, VCC = 0V (when using SOH28 + M4T28-BR12SH SNAPHAT top).

32/40

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