Datasheet

MSP430x241x, MSP430x261x
MIXED SIGNAL MICROCONTROLLER
SLAS541 -- JUNE 2007
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
NAME
64-
Pin
NO.
80-
Pin
NO.
I/O DESCRIPTION
AV
CC
64 80 Analog supply voltage, positive terminal. Supplies only the analog portion of ADC12 and DAC12.
AV
SS
62 78 Analog supply voltage, negative terminal. Supplies only the analog portion of ADC12 and DAC12.
DV
CC1
1 1 Digital supply voltage, positive terminal. Supplies all digital parts.
DV
SS1
63 79 Digital supply voltage, negative terminal. Supplies all digital parts.
DV
CC2
52 Digital supply voltage, positive terminal. Supplies all digital parts.
DV
SS2
53 Digital supply voltage, negative terminal. Supplies all digital parts.
P1.0/TACLK/
CAOUT
12 12 I/O General-purpose digital I/O pin/Timer_A, clock signal TACLK input/Comparator_A output
P1.1/TA0 13 13 I/O General-purpose digital I/O pin/Timer_A, capture: CCI0A input, compare: Out0 output/BSL transmit
P1.2/TA1 14 14 I/O General-purpose digital I/O pin/Timer_A, capture: CCI1A input, compare: Out1 output
P1.3/TA2 15 15 I/O General-purpose digital I/O pin/Timer_A, capture: CCI2A input, compare: Out2 output
P1.4/SMCLK 16 16 I/O General-purpose digital I/O pin/SMCLK signal output
P1.5/TA0 17 17 I/O General-purpose digital I/O pin/Timer_A, compare: Out0 output
P1.6/TA1 18 18 I/O General-purpose digital I/O pin/Timer_A, compare: Out1 output
P1.7/TA2 19 19 I/O General-purpose digital I/O pin/Timer_A, compare: Out2 output
P2.0/ACLK/CA2 20 20 I/O General-purpose digital I/O pin/ACLK output/Comparator_A input
P2.1/TAINCLK/
CA3
21 21 I/O General-purpose digital I/O pin/Timer_A, clock signal at INCLK
P2.2/CAOUT/
TA0/CA4
22 22 I/O General-purpose digital I/O pin/Timer_A, capture: CCI0B input/Comparator_A output/BSL
receive/Comparator_A input
P2.3/CA0/TA1 23 23 I/O General-purpose digital I/O pin/Timer_A, compare: Out1 output/Comparator_A input
P2.4/CA1/TA2 24 24 I/O General-purpose digital I/O pin/Timer_A, compare: Out2 output/Comparator_A input
P2.5/Rosc/CA5 25 25 I/O General-purpose digital I/O pin/input for external resistor defining the DCO nominal
frequency/Comparator_A input
P2.6/ADC12CLK/
DMAE0†/CA6
26 26 I/O General-purpose digital I/O pin/conversion clock – 12-bit ADC/DMA channel 0 external
trigger/Comparator_A input
P2.7/TA0/CA7 27 27 I/O General-purpose digital I/O pin/Timer_A, compare: Out0 output/Comparator_A input
P3.0/UCB0STE/
UCA0CLK
28 28 I/O General-purpose digital I/O pin/USCI B0 slave transmit enable/USCI A0 clock input/output
P3.1/UCB0SIMO/
UCB0SDA
29 29 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
Cmode
P3.2/UCB0SOMI/
UCB0SCL
30 30 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
Cmode
P3.3/UCB0CLK/
UCA0STE
31 31 I/O General-purpose digital I/O/USCI B0 clock input/output, USCI A0 slave transmit enable
P3.4/UCA0TXD/
UCA0SIMO
32 32 I/O General-purpose digital I/O pin/USCIA transmit data output in UART mode, slave data in/master out
in SPI mode
P3.5/UCA0RXD/
UCA0SOMI
33 33 I/O General-purpose digital I/O pin/USCI A0 receive data input in UART mode, slave data out/master
in in SPI mode
P3.6/UCA1TXD/
UCA1SIMO
34 32 I/O General-purpose digital I/O pin/USCI A1 transmit data output in UART mode, slave data in/master
out in SPI mode
P3.7/UCA1RXD/
UCA1SOMI
35 33 I/O General-purpose digital I/O pin/USCIA1 receive data input in UART mode, slave data out/master
in in SPI mode
P4.0/TB0 36 36 I/O General-purpose digital I/O pin/Timer_B, capture: CCI0A/B input, compare: Out0 output
P4.1/TB1 37 37 I/O General-purpose digital I/O pin/Timer_B, capture: CCI1A/B input, compare: Out1 output
†
MSP430F261x devices only
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