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MSP430X21X1 Datasheet(PDF) 3 Page - Texas Instruments

Part No. MSP430X21X1
Description  MIXED SIGNAL MICROCONTROLLER
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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MSP430X21X1 Datasheet(HTML) 3 Page - Texas Instruments

 
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MSP430x21x1
MIXED SIGNAL MICROCONTROLLER
SLAS439C − SEPTEMBER 2004 − REVISED JULY 2006
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
NAME
DW, PW, or DGV
RGE
I/O
DESCRIPTION
NAME
NO.
NO.
I/O
DESCRIPTION
P1.0/TACLK
13
13
I/O
General-purpose digital I/O pin
Timer_A, clock signal TACLK input
P1.1/TA0
14
14
I/O
General-purpose digital I/O pin
Timer_A, capture: CCI0A input, compare: Out0 output/BSL transmit
P1.2/TA1
15
15
I/O
General-purpose digital I/O pin
Timer_A, capture: CCI1A input, compare: Out1 output
P1.3/TA2
16
16
I/O
General-purpose digital I/O pin
Timer_A, capture: CCI2A input, compare: Out2 output
P1.4/SMCLK/TCK
17
17
I/O
General-purpose digital I/O pin / SMCLK signal output
Test Clock input for device programming and test
P1.5/TA0/TMS
18
18
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
19
20
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†
20
21
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/CA2
8
6
I/O
General-purpose digital I/O pin / ACLK output
Comparator_A+, CA2 input
P2.1/INCLK/CA3
9
7
I/O
General-purpose digital I/O pin / Timer_A, clock signal at INCLK
Comparator_A+, CA3 input
P2.2/CAOUT/
TA0/CA4
10
8
I/O
General-purpose digital I/O pin
Timer_A, capture: CCI0B input/BSL receive
Comparator_A+, output / CA4 input
P2.3/CA0/TA1
11
10
I/O
General-purpose digital I/O pin / Timer_A, compare: Out1 output
Comparator_A+, CA0 input
P2.4/CA1/TA2
12
11
I/O
General-purpose digital I/O pin / Timer_A, compare: Out2 output
Comparator_A+, CA1 input
P2.5/CA5
3
24
I/O
General-purpose digital I/O pin
Comparator_A+, CA5 input
XIN/P2.6/CA6
6
4
I/O
Input terminal of crystal oscillator
General-purpose digital I/O pin
Comparator_A+, CA6 input
XOUT/P2.7/CA7
5
3
I/O
Output terminal of crystal oscillator
general-purpose digital I/O pin
Comparator_A+, CA7 input
RST/NMI
7
5
I
Reset or nonmaskable interrupt input
TEST
1
22
I
Selects test mode for JTAG pins on Port1. The device protection fuse
is connected to TEST.
VCC
2
23
Supply voltage
VSS
4
2
Ground reference
QFN Pad
NA
Package Pad
NA
QFN package pad connection to VSS recommended.
† TDO or TDI is selected via JTAG instruction.
NOTE: If XOUT/P2.7/CA7 is used as an input, excess current will flow until P2SEL.7 is cleared. This is due to the oscillator output driver
connection to this pad after reset.


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