米6体育平台手机版

ZHCSDO6B May 2015 – September 2020 MSP430FG6425 , MSP430FG6426 , MSP430FG6625 , MSP430FG6626

PRODUCTION DATA

封装选项

机械数据 (封装 | 引脚)

PZ|100
- MTQF013A

散热焊盘机械数据 (封装 | 引脚)

PZ|100
- QFND428

订购信息

7.6 Connection of Unused Pins

Table 7-4 lists the correct termination of all unused pins.

Table 7-4 Connection of Unused Pins

⁽¹⁾PIN	POTENTIAL	COMMENT
AVCC	DV_CC
AVSS	DV_SS
CPCAP	Open	For devices where the charge pump is not used (no rail-to-rail OA and no rail-to-rail CTSD16).
LCDCAP	DV_SS
LDOI	DV_SS	For devices with LDO-PWR module when not being used in the application.
LDOO	Open	For devices with LDO-PWR module when not being used in the application.
NC	Open
PJ.0/TDO PJ.1/TDI PJ.2/TMS PJ.3/TCK	Open	The JTAG pins are shared with general-purpose I/O function (PJ.x). If not being used, these must be switched to port function, output direction (PJDIR.n = 1). When used as JTAG pins, these pins must remain open.
PU.0/DP PU.1/DM	Open	For USB devices only when USB module is not being used in the application
PUR⁽³⁾	DV_SS	For USB devices only when USB module is not being used in the application
Px.y	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)
RST/NMI	DV_CC or V_CC	47-kΩ pullup or internal pullup selected with 10-nF (2.2 nF) pulldown⁽²⁾
Reserved	DV_SS
TEST	Open	This pin always has an internal pulldown enabled.
V18	Open	For USB devices only when USB module is not being used in the application
VBAK	Open	For devices where no separate battery backup supply is used in the system. Set bit BAKDIS = 1.
VBAT	DV_CC	For devices where no separate battery backup supply is used in the system. Set bit BAKDIS = 1.
VBUS, VSSU	DV_SS	For USB devices only when USB module is not being used in the application
VUSB	Open	For USB devices only when USB module is not being used in the application
XIN	DV_SS	For dedicated XIN pins only. XIN pins with shared GPIO functions must be programmed to GPIO and follow Px.y recommendations.
XOUT	Open	For dedicated XOUT pins only. XOUT pins with shared GPIO functions must be programmed to GPIO and follow Px.y recommendations.
XT2IN	DV_SS	For dedicated XT2IN pins only. XT2IN pins with shared GPIO functions must be programmed to GPIO and follow Px.y recommendations.
XT2OUT	Open	For dedicated XT2OUT pins only. XT2OUT pins with shared GPIO functions must be programmed to GPIO and follow Px.y recommendations.

(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.

(3) The default USB BSL evaluates the state of the PUR pin after a BOR reset. If it is pulled high externally, then the BSL is invoked. Therefore, unless invoking the BSL, it is important to keep PUR pulled low after a BOR reset, even if BSL or USB is never used. TI recommends a 1-MΩ resistor to ground.