Datasheet

Bus
Keeper
EN
P1.7/SDI/SDA/A7/TDO/TDI
To Module
From US I
PxOUT.y
DV
SS
DV
CC
1
1
0
PxIN.y
PxREN.y
1
0
PxIRQ.y
PxIE.y
EN
Set
Q
Interrupt
Edge
Select
PxSEL.y
PxIES.y
PxIFG.y
Direction
0: Input
1: Output
PxDIR.y
USIPE7
0
1
From JTAG
To JTAG
INCHx
To ADC10
ADC10AE0.y
from USI
PxSEL.y
PxSEL.y or
USIPE7
PxSEL.y
From JTAG
To JTAG
USI in I2C mode: Output driver drives low level only. Driver is disabled in JTAG mode.
MSP430G2x31
MSP430G2x21
www.ti.com SLAS694J –FEBRUARY 2010–REVISED FEBRUARY 2013
Port P1 Pin Schematic: P1.7, Input/Output With Schmitt Trigger – MSP430G2x31
Table 23. Port P1 (P1.7) Pin Functions – MSP430G2x31
CONTROL BITS / SIGNALS
(1)
PIN NAME (P1.x) x FUNCTION
ADC10AE.x JTAG
P1DIR.x P1SEL.x USIP.x
(INCH.x = 1) Mode
P1.7/ P1.x (I/O) I: 0; O: 1 0 0 0 0
A7/ A7 X X 0 1 (y = 7) 0
7
SDI/SDO SDI/SDO X X 1 0 0
TDO/TDI TDO/TDI X X 0 0 1
(1) X = don't care
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