1

2

NC

SCLK

3

PRES

4

TS2

MRST

5

6

PFIN

7

SRN

8

VSS

VCELL-

XALERT

SRP

TS1

21

22

9

10

23

24

26

25

CLKOUT

VCC

NC

RBI

VCELL+

VSS

SAFE

SDATA

SMBD

19

20

LED5

11

12

LED4

NC

27

28

30

29

13

14

15

18

16

17

SMBC

DISP

NC

LED3

LED2

LED1

bq20z60-R1

www.ti.com

SLUS991 – DECEMBER 2009

PIN OUT DIAGRAM

TSSOP (PW)

(TOP VIEW)

PIN FUNCTIONS

PIN

DESCRIPTION

NO.

NAME

1

NC

–

Not used— leave floating

2

XALERT

I

Input from bq29330 XALERT output.

3

SDATA

I/O

Data transfer to and from bq29330

4

SCLK

I/O

Communication clock to the bq29330

5

CLKOUT

O

32.768-kHz output for the bq29330. This pin should be directly connected to the AFE.

6

TS1

I

7

TS2

I

8

PRES

I

Active low input to sense system insertion. Typically requires additional ESD protection.

Active low input to detect secondary protector output status, and to allow the bq20z60-R1 to report

9

PFIN

I

10

SAFE

OD

Active high output to enforce additional level of safety protection; e.g., fuse blow.

SMBus data open-drain bidirectional pin used to transfer address and data to and from the

11

SMBD

I/OD

bq20z60-R1

12

NC

–

Not used— leave floating

13

SMBC

I/OD

SMBus clock open-drain bidirectional pin used to clock the data transfer to and from the bq20z60-R1

Display control for the LEDs. This pin is typically connected to bq29330 REG via a 100K

Ω resistor

14

DISP

I

and a push button switch connect to VSS

15

NC

–

Not used— leave floating

16

LED1

O

LED1 display segment that drives an external LED depending on the firmware configuration

17

LED2

O

LED2 display segment that drives an external LED depending on the firmware configuration

18

LED3

O

LED3 display segment that drives an external LED depending on the firmware configuration

19

LED4

O

LED4 display segment that drives an external LED depending on the firmware configuration

20

LED5

O

LED5 display segment that drives an external LED depending on the firmware configuration

21

VSS

–

Negative supply voltage

(1)

I = Input, IA = Analog input, I/O = Input/output, I/OD = Input/Open-drain output, O = Output, P = Power

Copyright © 2009, Texas Instruments Incorporated

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