DS1312S 데이터 시트보기 (PDF) - Maxim Integrated

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DS1312S

Nonvolatile Controller with Lithium Battery Monitor

Maxim Integrated 

VCC/VBAT Switch Point

Output Current @ 2.4V

Output Current @ 0.4V

Input Leakage

Output Leakage

Battery Monitoring Test Load

DS1312

VSW

2.6

2.7

2.8

V

2

IOH

-1

mA

8, 11

IOL

4

mA

8, 11

IIL

-1.0

+1.0

µA

ILO

-1.0

+1.0

µA

RINT

0.8

1.2

1.5

MΩ

DC ELECTRICAL CHARACTERISTICS (-40°C to +85°C; VCCI < VBAT; VCCI < VSW)

PARAMETER

SYMBOL MIN TYP MAX UNITS NOTES

Battery Current

IBAT

100

nA

3

Battery Backup Current

ICCO2

500

µA

7

Supply Voltage

VCCO

VBAT-0.2

V

2

CEO Output

VOHL

VBAT-0.2

V

2, 9

CAPACITANCE

PARAMETER

Input Capacitance ( CEI , TOL)

Output Capacitance

( CEO , BW , RST )

SYMBOL

CIN

COUT

MIN

TYP

MAX

7

7

(TA = +25°C)

UNITS NOTES

pF

pF

AC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CEI to CEO Propagation Delay

tPD

CE Pulse Width

tCE

VCC Valid to End of

tREC

Write Protection

VCC Valid to CEI Inactive

tPU

VCC Valid to RST Inactive

tRPU

VCC Valid to BW Valid

tBPU

MIN

150

(-40°C to +85°C; VCCI > VCCTP)

TYP MAX UNITS NOTES

5

10

ns

1.5

µs

12

12

125

ms

10

2

ms

200

350

ms

11

1

s

11

AC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL MIN

VCC Slew Rate

tF

150

VCC Fail Detect to RST Active

tRPD

VCC Slew Rate

tR

150

(-40°C to +85°C; VCCI < VCCTP)

TYP MAX UNITS NOTES

µs

5

15

µs

11

µs

AC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

Battery Test to BW Active

tBW

Battery Test Cycle-Normal

tBTCN

Battery Test Cycle-Warning

tBTCW

Battery Test Pulse Width

tBTPW

Battery Detach to Battery Attach

tBDBA

Battery Attach to BW Inactive

tBABW

MIN

7

(-40°C to +85°C; VCCI > VCCTP)

TYP MAX UNITS NOTES

1

s

11

24

5

1

1

hr

s

s

s

s

11

6 of 12

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