ADP3402

–5–

REV. 0

ABSOLUTE MAXIMUM RATINGS

*

Voltage on Any Pin with Respect to Any

GND Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +10 V

Voltage on Any Pin May Not Exceed VBAT,

with the Following Exceptions: VRTC,

VSIM, CAP+, PWRONIN, I/O, CLK, RST

Storage Temperature Range . . . . . . . . . . . . –65

Operating Temperature Range . . . . . . . . . . . –20

Maximum Junction Temperature . . . . . . . . . . . . . . . . . 125

θ

θ

Lead Temperature Range (Soldering, 60 sec) . . . . . . . . 300

*This is a stress rating only, operation beyond these limits can cause the device to

be permanently damaged.

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection.

Although the ADP3402 features proprietary ESD protection circuitry, permanent damage may

occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD

precautions are recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

PIN CONFIGURATION

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

ADP3402

SIMGND

CLKIN

RESETIN

DATAIO

SIMBAT

CAP

VRTC

VBAT

VCC

PWRONKEY

ANALOGON

CHRON

ROWX

PWRONIN

I/O

RST

SIMPROG

SIMON

CLK

VSIM

CAP+

AGND

VCCA

REFOUT

RESET

RESCAP

DGND

VTCXO

PIN FUNCTION DESCRIPTIONS

Pin

Mnemonic

Function

1

VBAT

Battery Input Voltage

2

VCC

Digital Low Dropout Regulator

3

PWRONKEY

Power On/Off Key

4

ANALOGON

VTCXO Enable

5

PWRONIN

Power On/Off Signal from

Microprocessor

6

ROWX

Microprocessor Keyboard Output

7

CHRON

Charger On/Off Input

8

VRTC

Real-Time Clock Supply/Coin

Cell Battery Charger

9

CAP–

Negative Side of Boost Capacitor

10

SIMBAT

Battery Input for the SIM

Charge Pump

11

DATAIO

Non-Level-Shifted Bidirectional

Data I/O

12

RESETIN

Non-Level-Shifted SIM Reset

13

CLKIN

Non-Level-Shifted Clock

14

SIMGND

Charge Pump Ground

15

I/O

Level-Shifted Bidirectional SIM

Data Input/Output

16

RST

Level-Shifted SIM Reset

17

SIMPROG

VSIM Programming:

Low = 3 V, High = 5 V

18

SIMON

VSIM Enable

19

CLK

Level-Shifted SIM Clock

20

VSIM

SIM Supply

21

CAP+

Positive Side of Boost Capacitor

22

RESCAP

Reset Delay Timing Cap

23

DGND

Digital Ground

24

VTCXO

Crystal Oscillator Low Dropout

Regulator

25

RESET

Main Reset

26

REFOUT

Reference Output

27

VCCA

Analog Low Dropout Regulator

28

AGND

Analog Ground

ORDERING GUIDE

Temperature

Package

Package

Model

Range

Description

Option

ADP3402ARU –20