DS12CR887-5 datasheet(3/22 Pages) DALLAS

Part #	DS12CR887-5

Description	RTC with Constant-Voltage Trickle Charger

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Manufacturer	DALLAS [Dallas Semiconductor]

Direct Link	https://www.maximintegrated.com/en.html

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RTC with Constant-Voltage Trickle Charger

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3

DC ELECTRICAL CHARACTERISTICS (DS12R885 Only)

(VCC = 0V, VBACKUP = 3.2V, TA = -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VBACKUP Current (OSC On);

TA = +25°C, VBACKUP = 3.0V

IBACKUP2

(Note 7)

800

1000

nA

VBACKUP Current (Oscillator Off)

IBACKUPDR (Note 7)

100

nA

AC ELECTRICAL CHARACTERISTICS

(VCC = 4.5V to 5.5V, TA = -40°C to +85°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Cycle Time

tCYC

180

DC

ns

Pulse Width, DS Low or R/

W High

PWEL

80

ns

Pulse Width, DS High or R/

W Low

PWEH

65

ns

Input Rise and Fall

tR, tF

30

ns

R/

W Hold Time

tRWH

0ns

R/

W Setup Time Before DS/E

tRWS

10

ns

Chip-Select Setup Time Before

DS or R/

W

tCS

5ns

Chip-Select Hold Time

tCH

0ns

Read-Data Hold Time

tDHR

535

ns

Write-Data Hold Time

tDHW

0ns

Address Valid Time to AS Fall

tASL

20

ns

Address Hold Time to AS Fall

tAHL

5ns

Delay Time DS/E to AS Rise

tASD

10

ns

Pulse Width AS High

PWASH

30

ns

Delay Time, AS to DS/E Rise

tASED

35

ns

Output Data Delay Time from DS

or R/

W

tDDR

(Note 8)

15

60

ns

Data Setup Time

tDSW

50

ns

Reset Pulse Width

tRWL

5µs

IRQ Release from DS

tIRDS

02

µs

IRQ Release from RESET

tIRR

02

µs

Similar Part No. - DS12CR887-5

Manufacturer	Part #	Datasheet	Description
Maxim Integrated Produc...	DS12CR887-5	1Mb / 22P	RTC with Constant-Voltage Trickle Charger Rev 1; 4/04
Maxim Integrated Produc...	DS12CR887-5++	342Kb / 23P	RTCs with Constant-Voltage Trickle Charger Rev 6; 4/10

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Similar Description - DS12CR887-5

Manufacturer	Part #	Datasheet	Description
Maxim Integrated Produc...	DS12R885	356Kb / 23P	RTC with Constant-Voltage Trickle Charger Rev 5; 2/07
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DS12CR887-5 Datasheet(PDF) 3 Page - Dallas Semiconductor

DS12CR887-5 Datasheet(HTML) 3 Page - Dallas Semiconductor

Similar Part No. - DS12CR887-5

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