Datasheet

MSP430x241x, MSP430x261x
MIXED SIGNAL MICROCONTROLLER
SLAS541 -- JUNE 2007
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Terminal Functions (Continued)
TERMINAL
NAME
64-
Pin
NO.
80-
Pin
NO.
I/O DESCRIPTION
P8.6/XT2OUT 68 O General-purpose digital I/O pin/Output terminal of crystal oscillator XT2
P8.7/XT2IN 69 I General-purpose digital I/O pin/Input port for crystal oscillator XT2. Only standard crystals can be
connected.
XT2OUT 52 O Output terminal of crystal oscillator XT2
XT2IN 53 I Input port for crystal oscillator XT2
RST/NMI 58 74 I Reset input, nonmaskable interrupt input port, or bootstrap loader start (in Flash devices).
TCK 57 73 I Test clock (JTAG). TCK is the clock input port for device programming test and bootstrap loader start
TDI/TCLK 55 71 I Test data input or test clock input. The device protection fuse i s connected to TDI/TCLK.
TDO/TDI 54 70 I/O Test data output port. TDO/TDI data output or programming data input terminal
TMS 56 72 I Test mode select. TMS is used as an input port for device programming and test.
Ve
REF+
/DAC0† 10 10 I Input for an external reference voltage/DAC12.0 output
V
REF+
7 7 O Output of positive terminal of the reference voltage in the ADC12
V
REF--
/Ve
REF--
11 11 I Negative terminal for the reference voltage for both sources, the internal reference voltage, or an
external applied reference voltage
XIN 8 8 I Input port for crystal oscillator XT1. Standard or watch crystals can be connected.
XOUT 9 9 O Output port for crystal oscillator XT1. Standard or watch crystals can be connected.
†
MSP430F261x devices only
PRODUCT PRE
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IEW