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17

Pin No.

Terminal Name

I/O Setting

Contents of Control

Remark

1

P12

O

LED-K6

Low:active

2

P11

I

Not in use

Connecting to GND

3

P10

I

Not in use

Connecting to GND

4

P47/KR07

O

LED-C1

Hi:active

5

P46/KR06

O

LED-C2

Hi:active

6

P45/KR05

O

LED-C3

Hi:active

7

P44/KR04

O

LED-C4

Hi:active

8

P43/KR03

I

Not in use 

Connecting to GND

9

P42/KR02

I

KEY-IN3

Low:push

10

P41/KR01

I

KEY-IN2

Low:push

11

P40/KR00

I

KEY-IN1

Low:push

12

P31/BZO90

I

Not in use

Connecting to GND

13

IC0

-

Not in use

Connecting to GND

14

X2

O

4.0MHz ceralock

15

X1

I

4.0MHz ceralock

16

Vss0

-

DG

17

Vdd0

-

Power terminal

+3.3V

18

XT2

-

Not in use

OPEN

19

XT1

I

Not in use

Connecting to GND

20

nRESET

I

Receive from IP-PT(RESET_OUT)

Low:active

21

P30/TO90

I

Not in use

Connecting to GND

22

P27/TI80/TO80

I

Not in use

Connecting to GND

23

P26/INTP2/CPT90

I

Not in use

Connecting to GND

24

P25/INTP1

I

Not in use

Connecting to GND

25

P24/INTP0

I

Not in use

Connecting to GND

26

P23/SS20

I

Receive from IP-PT(RX_RDY)

27

P22/SI20/RxD20

I

Receive from IP-PT(TXD)

28

P21/SO20/TxD20

O

Transmit to IP-PT(RXD_OPT)

29

P20/SCK20/ASCK20

I

Receive from IP-PT(SCLK_OPT)

30

P07

I

Mode select-1

OPEN

31

P06

I

Mode select-2

OPEN

32

P05

I

Not in use

Connecting to GND

33

P04

I

Not in use

Connecting to GND

34

P03

I

Not in use

Connecting to GND

35

P02

I

Not in use

Connecting to GND

36

P01

I

Not in use

Connecting to GND

37

P00

I

Not in use

Connecting to GND

38

Vdd1

-

Power terminal

+3.3V

39

Vss1

-

DG

40

P17

O

LED-K1

Low:active

41

P16

O

LED-K2

Low:active

42

P15

O

LED-K3

Low:active

43

P14

O

LED-K4

Low:active

44

P13

O

LED-K5

Low:active

18

19

20

Note:

1. RTL (Retention Time Limited)

The marking (RTL) indicates that the Retention Time is
limited for this item.
After the discontinuation of this assembly in production,
the item will continue to be available for a specific period
of time. The retention period of availability depends on
the type of assembly and the laws governing parts and
product retention. At the end of this period, the assembly
will no longer be available.

2. Important safety notice

Components identified by the   mark indicates special
characteristics important for safety. When replacing any
of these components, only use specified manufacture's
parts.

3. The S mark means the part is one of some identical parts.

For that reason, it may be different from the installed part.

4. ISO code (Example: ABS-94HB) of the remarks column

shows quality of the material and a flame resisting grade
about plastics.

5. RESISTORS & CAPACITORS

Unless otherwise specified;
All resistors are in ohms (

Ω), k=1000Ω, M=1000kΩ

All capacitors are in MICRO FARADS (

µF), p=µµF

*Type & Wattage of Resistor

NK

KXNT303X

KXNT303X-B