Mechanical Information

Table 7–1. Signal and Pad Descriptions for the MSP50C614

SIGNAL

PIN NUMBER

PAD NUMBER

I/O

DESCRIPTION

 

 

 

Input/Output Ports

 

 

 

 

 

 

 

 

 

PA0 – PA7

66 – 59

75

– 68

I/O

Port A general-purpose I/O

(1 Byte)

PB0 – PB7

76 – 69

85

– 78

I/O

Port B general-purpose I/O

(1 Byte)

PC0 – PC7

90 – 83

8

– 1

I/O

Port C general-purpose I/O

(1 Byte)

PD0 – PD7

100 – 93

18 – 11

I/O

Port D general-purpose I/O

(1 Byte)

PE0 – PE7

51 – 44

63

– 56

I/O

Port E general-purpose I/O

(1 Byte)

PF0 – PF7

16 – 9

31

– 24

I

Port F dedicated input

(1 Byte)

PG0 – PG7

37 – 30

49

– 42

O

Port G dedicated output

(1 Byte)

PG8 – PG15

25 – 18

39

– 32

O

Port G dedicated output

(1 Byte)

Pins PD4 and PD5 may be dedicated to the comparator function, if the comparator enable bit is set. Refer to Section 3.3, Comparator, for details.

Scan Port Control Signals

SCANIN

42

54

I

Scan port data input

SCANOUT

38

50

O

Scan port data output

SCANCLK

41

53

I

Scan port clock

SYNC

40

52

I

Scan port synchronization

TEST

39

51

I

MSP50C6xx: test modes

The scan port pins must be bonded out on any MSP50C6xx production board.

Consult the “Important Note regarding Scan Port Bond Out”.

Reference Oscillator Signals

OSCOUT

56

65

O

Resistor/crystal reference out

OSCIN

57

66

I

Resistor/crystal reference in

PLL

58

67

O

Phase-lock-loop filter

 

 

 

 

 

 

 

 

 

Digital-to-Analog Sound Outputs

 

 

 

 

 

 

 

DACP

7

22

O

Digital-to-analog plus output (+)

DACM

5

20

O

Digital-to-analog minus output (–)

 

 

 

 

 

 

 

 

 

 

 

 

Initialization

 

 

 

 

 

 

 

 

 

43

55

I

Initialization

 

RESET

 

 

 

 

 

 

 

 

 

 

 

 

 

Power Signals

 

 

 

 

 

VSS

1, 26, 52, 67, 91

9, 19, 40, 64, 76

Ground

VDD

6, 8, 27, 68, 92

10, 21, 23, 41, 77

Processor power (+)

The VSS and VDD connections service the DAC circuitry. Their pins tend to sustain a higher current draw. A dedicated decoupling capacitor across these pins is therefore required.

Customer Information

7-3

Page 369
Image 369
Texas Instruments MSP50C6xx manual Signal and Pad Descriptions for the MSP50C614, Customer Information