NXP Semiconductors

Product Specification

Security Transponder and RISC Controller (STARC 2XLite)

PCF7x41ATJ

2013 Oct 15

7

CONFIDENTIAL

7

PINNING

Table 1. Pin Assignment

FUNCTION

DESCRIPTION

PIN

NOTE

i.c. A

Internally connected (node reference A)

1

2

i.c. A

Internally connected (node reference A)

2

2

i.c. A

Internally connected (node reference A)

3

2

VSS

Common Ground digital section (Battery neg. Terminal)

4

n.c.

Not connected

5

1

n.c.

Not connected

6

1

n.c.

Not connected

7

1

P20

General purpose I/O, Wake Up sense and Digital modulator output

8

P16

General purpose I/O, voltage comparator input

9

P17

General purpose I/O, Digital modulator outpu

10

P15

General purpose I/O and external clock input

11

P10

General purpose I/O with internal pull-up, Wake Up sense

12

P21

General purpose I/O, Wake Up sense and Timer 1 Capture input / Interrupt input

13

n.c.

Not connected

14

i.c. B

Internally connected (node reference B)

15

3

n.c.

Not connected

16

MSDA

ROM Monitor Serial Data with internal pull-up

17

4

i.c. C

Internally connected (node reference C)

18

2

i.c. C

Internally connected (node reference C)

19

2

MSCL

ROM Monitor Serial Clock Output

20

n.c.

Not connected

21

n.c.

Not connected

22

P22

General purpose I/O, Wake Up sense and Timer 1 Compare output (PWM)

23

P11

General purpose I/O with internal pull-up and Wake Up sense

24

P12

General purpose I/O with internal pull-up and Wake Up sense

25

P13

General purpose I/O with internal pull-up and Wake Up sense

26

TEST

Reserved

27

1

TEST

Reserved

28

1

TEST

Reserved

29

1

VBAT

Battery Supply Voltage digital section (Battery pos. Terminal)

30

P14

General purpose I/O

31

i.c. B

Internally connected (node reference B)

32

3

i.c. F

Internally connected (node reference F)

33

2

i.c. F

Internally connected (node reference F)

34

2

i.c. E

Internally connected (node reference E)

35

2

i.c. E

Internally connected (node reference E)

36

2

Note

1. Reserved for device test purposes. Required to be left unconnected or connected to VSS

2. Internally connected to another pin and not connected to the chip.

3. Internally connected to another pin and not connected to the chip, but connected to the chip die attach.

4. MSCL is an output and must be left unconnected in the application. MSDA features an on-chip pull-up to VBAT, and may be

left open or terminated to VBAT, as desired. For details please refer to the ‘PCF7941 Monitor and Download Interface’ (see

13 RELATED DOCUMENTS).