Datasheet
39
TMS320F28379S
,
TMS320F28377S
TMS320F28376S, TMS320F28375S, TMS320F28374S
www.ti.com
SPRS881C –AUGUST 2014–REVISED MAY 2016
Submit Documentation Feedback
Product Folder Links: TMS320F28379S TMS320F28377S TMS320F28376S TMS320F28375S TMS320F28374S
Terminal Configuration and FunctionsCopyright © 2014–2016, Texas Instruments Incorporated
4.4 Connections for Unused Pins
For applications that do not need to use all functions of the device, Table 4-3 lists acceptable conditioning
for any unused pins. When multiple options are listed in Table 4-3, any are acceptable. Pins not listed in
Table 4-3 must be connected according to Table 4-1.
Table 4-3. Connections for Unused Pins
SIGNAL NAME ACCEPTABLE PRACTICE
Analog
V
REFHIx
Tie to V
DDA
V
REFLOx
Tie to V
SSA
ADCINx
• No Connect
• Tie to V
SSA
Digital
GPIOx
• Input mode with internal pullup enabled
• Input mode with external pullup or pulldown resistor
• Output mode with internal pullup disabled
X1 Tie to V
SS
X2 No Connect
TCK
• No Connect
• Pullup resistor
TDI
• No Connect
• Pullup resistor
TDO No Connect
TMS No Connect
TRST Pulldown resistor (2.2 kΩ or smaller)
VREGENZ Tie to V
DDIO
ERRORSTS No Connect
FLT1 No Connect
FLT2 No Connect
Power and Ground
V
DD
All V
DD
pins must be connected per Table 4-1.
V
DDA
If a separate analog supply is not used, tie to V
DDIO
.
V
DDIO
All V
DDIO
pins must be connected per Table 4-1.
V
DD3VFL
Must be tied to V
DDIO
V
DDOSC
Must be tied to V
DDIO
V
SS
All V
SS
pins must be connected to board ground.
V
SSA
If a separate analog ground is not used, tie to V
SS
.
V
SSOSC
If an external crystal is not used, this pin may be connected to the board ground.