MSP430x31x

MIXED SIGNAL MICROCONTROLLERS

SLAS165D – FEBRUARY 1998 – REVISED APRIL 2000

3

POST OFFICE BOX 655303

Terminal Functions

56-pin SSOP package

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

CIN

27

I

Counter enable. CIN input enables counter (TPCNT1) (timer/port).

COM0 – COM3

52 – 55

O

Common output pins. COM0 – COM3 are used for LCD back planes.

P0.0

13

I/O

General-purpose digital I/O pin

P0.1/RXD

14

I/O

General-purpose digital I/O pin, receive data input port – 8-bit (timer/counter)

P0.2/TXD

15

I/O

General-purpose digital I/O pin, transmit data output port – 8-bit (timer/counter)

P0.3 – P0.7

16 – 20

I/O

Five general-purpose digital I/O pins, bit 3–7

R23

9

I

Input of second positive analog LCD level (V2) (LCD)

R13

10

I

Input of third positive analog LCD level (V3 of V4) (LCD)

RST/NMI

5

I

Reset input or nonmaskable interrupt input

S0

29

O

Segment line S0 (LCD)

S1

30

O

Segment line S1 (LCD)

S2/O2 – S5/O5

31 – 34

O

Segment lines (S2 to S5) or digital output port O2 to O5, group 1 (LCD)

S6/O6 – S9/O9

35 – 38

O

Segment lines (S6 to S9) or digital output port O6 to O9, group 2 (LCD)

S10/O10 – S13/O13

39 – 42

O

Segment lines (S10 to S13) or digital output port O10 to O13, group 3 (LCD)

S14/O14 – S17/O17

43 – 46

O

Segment lines (S14 to S17) or digital output port O14 to O17, group 4 (LCD)

S18/O18

47

O

Segment line (S18) or digital output port O18 , group 5 (LCD)

S22/O22 – S23/O23

48,49

O

Segment lines (S22 to S23) or digital output port O22 to O23, group 6 (LCD)

S26/O26

50

O

Segment line (S26) or digital output port O26, group 7 (LCD)

S27/O27/CMPI

51

I/O

Segment line (S27) or digital output port O27 group 7, can be used as a comparator input port CMPI

(timer/port)

TCK

4

I

Test clock. TCK is a clock input terminal for device programming and test.

TDI/VPP

2

I

Test data input port. TDI/VPP is used as a data input terminal or an input for programming voltage.

TDO/TDI

1

I/O

Test data output port. TDO/TDI is used as a data output terminal or as a data input during

programming.

TMS

3

I

Test mode select. TMS is an input terminal for device programming and test.

TP0.0

21

O/Z

General-purpose 3-state digital output port, bit 0 (timer/port)

TP0.1

22

O/Z

General-purpose 3-state digital output port, bit 1 (timer/port)

TP0.2

23

O/Z

General-purpose 3-state digital output port, bit 2 (timer/port)

TP0.3

24

O/Z

General-purpose 3-state digital output port, bit 3( timer/port)

TP0.4

25

O/Z

General-purpose 3-state digital output port, bit 4 (timer/port)

TP0.5

26

I/O/Z

General-purpose 3-state digital I/O pin, bit 5 (timer/port)

VCC

8

Supply voltage

VSS

7

Ground reference

XBUF

6

O

Clock signal output of system clock (MCLK) or crystal clock (ACLK)

Xin

11

I

Input terminal of crystal oscillator

Xout/TCLK

12

I/O

Output terminal of crystal oscillator or test clock input

† MSP430P313/E313 not recommended for new designs – replaced by MSP430P315/E315.