
MSP430x22x2, MSP430x22x4
MIXED SIGNAL MICROCONTROLLER
SLAS504B − JULY 2006 − REVISED JULY 2007
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
Terminal Functions, MSP430x22x4
TERMINAL
DA RHA
DESCRIPTION
NAME
NO. NO.
I/O
P1.0/TACLK/
ADC10CLK
31 29 I/O General-purpose digital I/O pin
Timer_A, clock signal TACLK input
ADC10, conversion clock
P1.1/TA0 32 30 I/O General-purpose digital I/O pin
Timer_A, capture: CCI0A input, compare: OUT0 output/BSL transmit
P1.2/TA1 33 31 I/O General-purpose digital I/O pin
Timer_A, capture: CCI1A input, compare: OUT1 output
P1.3/TA2 34 32 I/O General-purpose digital I/O pin
Timer_A, capture: CCI2A input, compare: OUT2 output
P1.4/SMCLK/
TCK
35 33 I/O General-purpose digital I/O pin / SMCLK signal output
Test Clock input for device programming and test
P1.5/TA0/
TMS
36 34 I/O General-purpose digital I/O pin / Timer_A, compare: OUT0 output
Test Mode Select input for device programming and test
P1.6/TA1/
TDI/TCLK
37 35 I/O General-purpose digital I/O pin / Timer_A, compare: OUT1 output
Test Data Input or Test Clock Input for programming and test
P1.7/TA2/
TDO/TDI
†
38 36 I/O General-purpose digital I/O pin / Timer_A, compare: OUT2 output
Test Data Output or Test Data Input for programming and test
P2.0/ACLK/A0/OA0I0 8 6 I/O General-purpose digital I/O pin / ACLK output
ADC10, analog input A0 / OA0, analog input I0
P2.1/TAINCLK/SMCLK/
A1/OA0O
9 7 I/O General-purpose digital I/O pin / Timer_A, clock signal at INCLK
SMCLK signal output
ADC10, analog input A1 / OA0, analog output
P2.2/TA0/
A2/OA0I1
10 8 I/O General-purpose digital I/O pin
Timer_A, capture: CCI0B input/BSL receive, compare: OUT0 output
ADC10, analog input A2 / OA0, analog input I1
P2.3/TA1/
A3/V
REF−
/V
eREF−
/OA1I1/OA1O
29 27 I/O General-purpose digital I/O pin
Timer_A, capture CCI1B input, compare: OUT1 output
ADC10, analog input A3 / negative reference voltage output/input
OA1, analog input I1 / OA1, analog output
P2.4/TA2/
A4/V
REF+
/V
eREF+
/OA1I0
30 28 I/O General-purpose digital I/O pin / Timer_A, compare: OUT2 output
ADC10, analog input A4 / positive reference voltage output/input
OA1, analog input I0
P2.5/
R
OSC
3 40 I/O General-purpose digital I/O pin
Input for external DCO resistor to define DCO frequency
XIN/P2.6 6 3 I/O Input terminal of crystal oscillator
General-purpose digital I/O pin
XOUT/P2.7 5 2 I/O Output terminal of crystal oscillator
General-purpose digital I/O pin
P3.0/
UCB0STE/UCA0CLK/
A5
11 9 I/O General-purpose digital I/O pin
USCI_B0 slave transmit enable / USCI_A0 clock input/output
ADC10, analog input A5
P3.1/
UCB0SIMO/UCB0SDA
12 10 I/O General-purpose digital I/O pin
USCI_B0 slave in/master out in SPI mode, SDA I
2
C data in I
2
C mode
P3.2/
UCB01SOMI/UCB0SCL
13 11 I/O General-purpose digital I/O pin
USCI_B0 slave out/master in in SPI mode, SCL I
2
C clock in I
2
C mode
P3.3/
UCB0CLK/UCA0STE
14 12 I/O General-purpose digital I/O pin
USCI_B0 clock input/output / USCI_A0 slave transmit enable
P3.4/
UCA0TXD/UCA0SIMO
25 23 I/O General-purpose digital I/O pin
USCI_A0 transmit data output in UART mode, slave in/master out in SPI mode