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1 application circuits – Texas Instruments MSP50C6xx User Manual

Page 356

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Application Circuits

6-2

6.1

Application Circuits

Figure 6–1. Minimum Circuit Configuration for the C614/P614 Using a Resistor-Trimmed
Oscillator

To pin 2 of Scan Port Connector

MSP50C614/
MSP50P614

To pin 1 of Scan Port Connector

(optional )

5 V

0.1

µ

F

(5)

R

REFERENCE

470 k

(1%)

3300 pF

OSC

IN

OSC

OUT

PLL

DAC

P

DAC

M

V

PP

V

DD

1N914

32

RESET

V

SS

5

5

1

µ

F

20%

1 k

100 k

5 V

1N914

Reset

Switch

† The diode across VDD and VPP may be omitted (shorted), if the application does not require use of the scan port interface.

The same applies for the 1-k

resistor which appears at the RESET pin; the resistor may be shorted if not using the scan

port. However, the footprint for the resistor is strongly recommended for any MSP50C614 production board. Refer to the
Important Note regarding Scan Port Bond Out appearing in Chapter 7.

(optional )

(MSP50P614 only)

Note, that there are five V

DD

pins and five V

SS

pins. Each of these should be

connected, with the separate decoupling capacitors (0.1

µ

F) included for each

V

DD

.