Datasheet

MSP430x22x2, MSP430x22x4
MIXED SIGNAL MICROCONTROLLER
SLAS504B − JULY 2006 − REVISED JULY 2007
58
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
Port P1 pin schematic: P1.4 to P1.6, input/output with Schmitt trigger and in-system access features
Bus
Keeper
EN
Direction
0: Input
1: Output
P1SEL.x
1
0
P1DIR.x
P1IN.x
P1IRQ.x
D
EN
Module X IN
1
0
Module X OUT
P1OUT.x
Interrupt
Edge
Select
Q
EN
Set
P1SEL.x
P1IES.x
P1IFG.x
P1IE.x
P1.4/SMCLK/TCK
P1.5/TA0/TMS
P1.6/TA1/TDI
1
0
DVSS
DVCC
P1REN.x
To JTAG
From JTAG
1
Pad Logic
Port P1 (P1.4 to P1.6) pin functions
PIN NAME (P1 X)
X
FUNCTION
CONTROL BITS / SIGNALS
PIN NAME (P1.X)
X FUNCTION
P1DIR.x P1SEL.x 4-Wire JTAG
P1.4/SMCLK/TCK 4 P1.4† (I/O) I: 0; O: 1 0 0
SMCLK 1 1 0
TCK X X 1
P1.5/TA0/TMS 5 P1.5† (I/O) I: 0; O: 1 0 0
Timer_A3.TA0 1 1 0
TMS X X 1
P1.6/TA1/TDI/TCLK 6 P1.6† (I/O) I: 0; O: 1 0 0
Timer_A3.TA1 1 1 0
TDI/TCLK (see Note 3) X X 1
†
Default after reset (PUC/POR)
NOTES: 1. N/A: Not available or not applicable
2. X: Don’t care
3. Function controlled by JTAG.