DS1302Z Datasheet DS1302SN, DS1302Z, DS1302SN-16 | P10-P12

DS1302 Trickle-Charge Timekeeping Chip

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ABSOLUTE MAXIMUM RATINGS

Voltage Range on Any Pin Relative to Ground……………………………………………………………….-0.5Vto +7.0V

Operating Temperature Range, Commercial………………………………………………………………….0°C to +70°C

Operating Temperature Range, Indu

strial (IND)………

……………………………………………………-40°C to +85°C

Storage Temperature Range……………………………………………………………………………..….-55°C to +125°C

Soldering Temperature (leads, 10 seconds)………………………………………………………………..………….260°C

Soldering Temperature (surface mount)……………

………………………………

…..…….See IPC/JEDEC J-STD-020

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent da

mage to the device. These are stress ratings only,

and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is

not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability.

RECOMMENDED DC OPERATING CONDITIONS

(T

A

= 0°C to +70°C or T

A

= -40°C to +85°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V

CC1

, V

CC2

V

CC1,

V

CC2

(Notes 2, 10) 2.0 3.3 5.5 V

Logic 1 Input V

IH

(Note 2) 2.0

V

CC

+

0.3

V

CC

= 2.0V -0.3 +0.3

Logic 0 Input V

IL

V

CC

= 5V

(Note 2)

-0.3 +0.8

V

DC ELECTRICAL CHARACTERISTICS

(T

A

= 0°C to +70°C or T

A

= -40°C to +85°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Input Leakage I

LI

(Notes 5, 13) 85 500

μA

I/O Leakage I

LO

(Notes 5, 13) 85 500

μA

Logic 1 Output (I

OH

= -0.4mA) V

CC

= 2.0V 1.6

Logic 1 Output (I

OH

= -1.0mA)

V

OH

V

CC

= 5V

(Note 2)

2.4

V

Logic 0 Output (I

OL

= 1.5mA) V

CC

= 2.0V 0.4

Logic 0 Output (I

OL

= 4.0mA)

V

OL

V

CC

= 5V

(Note 2)

0.4

V

CC1

= 2.0V 0.4

Active Supply Current

(Oscillator Enabled)

I

CC1A

V

CC1

= 5V

CH = 0

(Notes 4, 11)

1.2

mA

V

CC1

= 2.0V 0.2 0.3

Timekeeping Current

(Oscillator Enabled)

I

CC1T

V

CC1

= 5V

CH = 0

(Notes 3, 11,13)

0.45 1

μA

V

CC1

= 2.0V 1 100

V

CC1

= 5V 1 100

Standby Current (Oscillator

Disabled)

I

CC1S

IND

CH = 1

(Notes 9, 11, 13)

5 200

nA

V

CC2

= 2.0V 0.425

Active Supply Current

(Oscillator Enabled)

I

CC2A

V

CC2

= 5V

CH = 0

(Notes 4, 12)

1.28

mA

V

CC2

= 2.0V 25.3

Timekeeping Current

(Oscillator Enabled)

I

CC2T

V

CC2

= 5V

CH = 0

(Notes 3, 12)

81

μA

V

CC2

= 2.0V

CH = 1

(Notes 9, 12)

25

Standby Current (Oscillator

Disabled)

I

CC2S

V

CC2

= 5V 80

μA

R1

2

R2

4

Trickle-Charge Resistors

R3

8

kΩ

Trickle-Charge Diode Voltage

Drop

V

TD

0.7 V

DS1302 Trickle-Charge Timekeeping Chip

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CAPACITANCE

(T

A

= +25°C)

PARAMETER SYMBOL MIN TYP MAX UNITS

Input Capacitance C

I

10 pF

I/O Capacitance C

I/O

15 pF

AC ELECTRICAL CHARACTERISTICS

(T

A

= 0°C to +70°C or T

A

= -40°C to +85°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

V

CC

= 2.0V 200

Data to CLK Setup t

DC

V

CC

= 5V

(Note 6)

50

ns

V

CC

= 2.0V 280

CLK to Data Hold t

CDH

V

CC

= 5V

(Note 6)

70

ns

V

CC

= 2.0V 800

CLK to Data Delay t

CDD

V

CC

= 5V

(Notes 6, 7, 8)

200

ns

V

CC

= 2.0V 1000

CLK Low Time t

CL

V

CC

= 5V

(Note 6)

250

ns

V

CC

= 2.0V 1000

CLK High Time t

CH

V

CC

= 5V

(Note 6)

250

ns

V

CC

= 2.0V 0.5

CLK Frequency t

CLK

V

CC

= 5V

(Note 6)

DC 2.0

MHz

V

CC

= 2.0V 2000

CLK Rise and Fall t

R

, t

F

V

CC

= 5V

500

ns

V

CC

= 2.0V 4

CE to CLK Setup t

CC

V

CC

= 5V

(Note 6)

1

μs

V

CC

= 2.0V 240

CLK to CE Hold t

CCH

V

CC

= 5V

(Note 6)

60

ns

V

CC

= 2.0V 4

CE Inactive Time t

CWH

V

CC

= 5V

(Note 6)

1

μs

V

CC

= 2.0V 280

CE to I/O High Impedance t

CDZ

V

CC

= 5V

(Note 6)

70

ns

V

CC

= 2.0V 280

SCLK to I/O High Impedance t

CCZ

V

CC

= 5V

(Note 6)

70

ns

Note 1:

Limits at -40°C are guaranteed by design and are not production tested.

Not

e 2:

All voltages are referenced to ground.

Note 3:

I

CC1T

and I

CC2T

are specified with I/O open, CE and SCLK set to a logic 0.

Note 4:

I

CC1A

and I

CC2A

are specified with the I/O pin open, CE high, SCLK = 2MHz at V

CC

= 5V; SCLK = 500kHz, V

CC

= 2.0V.

Note 5:

CE, SCLK, and I/O all have 40kΩ

pulldown resistors to ground.

Note 6

:

Measured at V

IH

= 2.0V or V

IL

= 0.8V and 10ns maximum rise and fall time.

Note 7:

Measured at V

OH

= 2.4V or V

OL

= 0.4V.

Note 8:

Load capacitance = 50pF.

Note 9:

I

CC1S

and I

CC2S

are specified with CE, I/O, and SCLK open.

Note 10:

V

CC

= V

CC2

, when V

CC2

> V

CC1

+ 0.2V; V

CC

= V

CC1

, when V

CC1

> V

CC2

.

Note 11:

V

CC2

= 0V.

Note 12:

V

CC1

= 0V.

Note 13:

Typical values are at +25°C.

DS1302 Trickle-Charge Timekeeping Chip

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Figure 6. Timing Diagram: Read Data Transfer

CE

SCLK

I/O

t

DC

t

CDH

t

CC

t

CDZ

t

CDD

t

R

t

F

t

CL

t

CH

ADDRESS/COMMAND BYTE

READ DATA BYTE

t

CCZ

Figure 7. Timing Diagram: Write Data Transfer

CE

SCLK

I/O

t

DC

t

CDH

t

CC

t

R

t

F

t

CL

t

CCH

t

CWH

ADDRESS/COMMAND BYTE WRITE DATA BYTE

t

CH

CHIP INFORMATION

TRANSISTOR COUNT: 11,500

THERMAL INFORMATION

PACKAGE

THETA-JA

(°C/W)

THETA-JC

(°C/

W)

8 DIP 110 40

8 SO (150 mils) 170 40

PACKAGE INFORMATION

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.

PACKAGE TYPE PACKAGE CODE DOCUMENT NO.

8 PDIP — 21-0043

8 SO (208 mils) — 21-0262

8 SO (150 mils) — 21-0041

DS1302Z

DS1302Z

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