MSP430F6779A Datasheet, PDF (25/176 Pages) Texas Instruments – Polyphase Metering SoCs

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MSP430F6779A, MSP430F6778A, MSP430F6777A, MSP430F6776A, MSP430F6775A
MSP430F6769A, MSP430F6768A, MSP430F6767A, MSP430F6766A, MSP430F6765A
MSP430F6749A, MSP430F6748A, MSP430F6747A, MSP430F6746A, MSP430F6745A
SLAS982 – MAY 2014
4.3 Pin Multiplexing
Pin multiplexing for these devices is controlled by both register settings and operating modes (for
example, if the device is in test mode). For details of the settings for each pin and schematics of the
multiplexed ports, see Section 6.11.28.
4.4 Connection of Unused Pins
The correct termination of all unused pins is listed in Table 4-5.
Table 4-5. Connection of Unused Pins⁽¹⁾
Pin
Potential
Comment
AVCC
AVSS
Px.y
DV_CC
DV_SS
Open
Switched to port function, output direction (PxDIR.n = 1). Px.y represents port x and bit y
of port x (for example, P1.0, P1.1, P2.2, PJ.0, PJ.1)
XIN
DV_SS
For dedicated XIN pins only. XIN pins with shared GPIO functions should be
programmed to GPIO and follow Px.y recommendations.
XOUT
Open
For dedicated XOUT pins only. XOUT pins with shared GPIO functions should be
programmed to GPIO and follow Px.y recommendations.
LCDCAP
RST/NMI
PJ.0/TDO
PJ.1/TDI
PJ.2/TMS
PJ.3/TCK
DV_SS
DV_CC or V_CC
Open
47-kΩ pullup or internal pullup selected with 10-nF (2.2 nF) pulldown⁽²⁾
The JTAG pins are shared with general purpose I/O function (PJ.x). If not being used,
these should be switched to port function, output direction (PJDIR.n = 1). When used as
JTAG pins, these pins should remain open.
TEST
Open
This pin always has an internal pulldown enabled.
(1) Any unused pin with a secondary function that is shared with general purpose I/O should follow the Px.y unused pin connection
guidelines.
(2) The pulldown capacitor should not exceed 2.2 nF when using devices with Spy-Bi-Wire interface in Spy-Bi-Wire mode or in 4-wire JTAG
mode with TI tools such as FET interfaces or GANG programmers.
Copyright © 2014, Texas Instruments Incorporated
Terminal Configuration and Functions
25
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Product Folder Links: MSP430F6779A MSP430F6778A MSP430F6777A MSP430F6776A MSP430F6775A
MSP430F6769A MSP430F6768A MSP430F6767A MSP430F6766A MSP430F6765A MSP430F6749A
MSP430F6748A MSP430F6747A MSP430F6746A MSP430F6745A