MSP430G2x31
MSP430G2x21
www.ti.com
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
MIXED SIGNAL MICROCONTROLLER
FEATURES
1
•
•
•
•
•
•
Low Supply-Voltage Range: 1.8 V to 3.6 V
Ultra-Low Power Consumption
– Active Mode: 220 µA at 1 MHz, 2.2 V
– Standby Mode: 0.5 µA
– Off Mode (RAM Retention): 0.1 µA
Five Power-Saving Modes
Ultra-Fast Wake-Up From Standby Mode in
Less Than 1 µs
16-Bit RISC Architecture, 62.5-ns Instruction
Cycle Time
Basic Clock Module Configurations
– Internal Frequencies up to 16 MHz With
One Calibrated Frequency
– Internal Very Low Power Low-Frequency
(LF) Oscillator
– 32-kHz Crystal
– External Digital Clock Source
•
•
•
•
•
•
•
•
•
16-Bit Timer_A With Two Capture/Compare
Registers
Universal Serial Interface (USI) Supporting SPI
and I2C (See Table 1)
Brownout Detector
10-Bit 200-ksps A/D Converter With Internal
Reference, Sample-and-Hold, and Autoscan
(See Table 1)
Serial Onboard Programming,
No External Programming Voltage Needed,
Programmable Code Protection by Security
Fuse
On-Chip Emulation Logic With Spy-Bi-Wire
Interface
For Family Members Details, See Table 1
Available in 14-Pin Plastic Small-Outline Thin
Package (TSSOP) (PW), 14-Pin Plastic Dual
Inline Package (PDIP) (N), and 16-Pin QFN
Package (RSA)
For Complete Module Descriptions, See the
MSP430x2xx Family User’s Guide (SLAU144)
DESCRIPTION
The Texas Instruments MSP430 family of ultra-low-power microcontrollers consists of several devices featuring
different sets of peripherals targeted for various applications. The architecture, combined with five low-power
modes, is optimized to achieve extended battery life in portable measurement applications. The device features a
powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency.
The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than 1 µs.
The MSP430G2x21/G2x31 series is an ultra-low-power mixed signal microcontroller with a built-in 16-bit timer
and ten I/O pins. The MSP430G2x31 family members have a 10-bit A/D converter and built-in communication
capability using synchronous protocols (SPI or I2C). For configuration details, see Table 1.
Typical applications include low-cost sensor systems that capture analog signals, convert them to digital values,
and then process the data for display or for transmission to a host system.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2013, Texas Instruments Incorporated
MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
www.ti.com
Table 1. Available Options (1)
BSL
EEM
Flash
(KB)
RAM
(B)
Timer_A
USI
ADC10
Channel
Clock
I/O
Package
Type (2)
MSP430G2231IRSA16
MSP430G2231IPW14
MSP430G2231IN14
-
1
2
128
1x TA2
1
8
LF, DCO, VLO
10
16-QFN
14-TSSOP
14-PDIP
MSP430G2221IRSA16
MSP430G2221IPW14
MSP430G2221IN14
-
1
2
128
1x TA2
1
-
LF, DCO, VLO
10
16-QFN
14-TSSOP
14-PDIP
MSP430G2131IRSA16
MSP430G2131IPW14
MSP430G2131IN14
-
1
1
128
1x TA2
1
8
LF, DCO, VLO
10
16-QFN
14-TSSOP
14-PDIP
MSP430G2121IRSA16
MSP430G2121IPW14
MSP430G2121IN14
-
1
1
128
1x TA2
1
-
LF, DCO, VLO
10
16-QFN
14-TSSOP
14-PDIP
Device
(1)
(2)
2
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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MSP430G2x31
MSP430G2x21
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
Device Pinout, MSP430G2x21
N OR PW PACKAGE
(TOP VIEW)
DVCC
P1.0/TA0CLK/ACLK
1
14
2
13
P1.1/TA0.0
P1.2/TA0.1
P1.3
P1.4/SMCLK/TCK
3
12
4
11
5
10
6
9
P1.5/TA0.0/SCLK/TMS
7
8
DVSS
XIN/P2.6/TA0.1
XOUT/P2.7
TEST/SBWTCK
RST/NMI/SBWTDIO
P1.7/SDI/SDA/TDO/TDI
P1.6/TA0.1/SDO/SCL/TDI/TCLK
NOTE: See port schematics in Application Information for detailed I/O information.
DVSS
DVSS
DVCC
DVCC
RSA PACKAGE
(TOP VIEW)
2
11
XOUT/P2.7
P1.2/TA0.1
3
10
TEST/SBWTCK
P1.3
4
9
RST/NMI/SBWTDIO
5
6
7
8
P1.7/SDI/SDA/TDO/TDI
P1.1/TA0.0
P1.5/TA0.0/SCLK/TMS
16 15 14 13
12
P1.6/TA0.1/SDO/SCL/TDI/TCLK
1
P1.4/SMCLK/TCK
P1.0/TA0CLK/ACLK
XIN/P2.6/TA0.1
NOTE: See port schematics in Application Information for detailed I/O information.
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Device Pinout, MSP430G2x31
N OR PW PACKAGE
(TOP VIEW)
DVCC
P1.0/TA0CLK/ACLK/A0
1
14
2
13
P1.1/TA0.0/A1
P1.2/TA0.1/A2
P1.3/ADC10CLK/A3/VREF-/VEREFP1.4/SMCLK/A4/VREF+/VEREF+/TCK
3
12
4
11
5
10
6
9
P1.5/TA0.0/A5/SCLK/TMS
7
8
DVSS
XIN/P2.6/TA0.1
XOUT/P2.7
TEST/SBWTCK
RST/NMI/SBWTDIO
P1.7/A7/SDI/SDA/TDO/TDI
P1.6/TA0.1/A6/SDO/SCL/TDI/TCLK
NOTE: See port schematics in Application Information for detailed I/O information.
DVSS
DVSS
DVCC
DVCC
RSA PACKAGE
(TOP VIEW)
16 15 14 13
P1.1/TA0.0/A1
2
11
XOUT/P2.7
P1.2/TA0.1/A2
3
10
TEST/SBWTCK
P1.3/ADC10CLK/A3/VREF-/VEREF-
4
9
RST/NMI/SBWTDIO
5
6
7
8
P1.7/SDI/SDA/TDO/TDI
XIN/P2.6/TA0.1
P1.6/TA0.1/SDO/SCL/TDI/TCLK
12
P1.5/TA0.0/SCLK/A5/TMS
1
P1.4/SMCLK/A4/VREF+/VEREF+/TCK
P1.0/TA0CLK/ACLK/A0
NOTE: See port schematics in Application Information for detailed I/O information.
4
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MSP430G2x21
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
Functional Block Diagram, MSP430G2x21
DVCC
XIN XOUT
DVSS
P1.x
P2.x
8
2
Port P1
Port P2
8 I/O
Interrupt
capability
pull-up/down
resistors
2 I/O
Interrupt
capability
pull-up/down
resistors
ACLK
Clock
System
SMCLK
Flash
2KB
1KB
MCLK
16MHz
CPU
MAB
incl. 16
Registers
MDB
RAM
128B
Emulation
2BP
USI
Watchdog
WDT+
Brownout
Protection
JTAG
Interface
15-Bit
Timer0_A2
Universal
Serial
Interface
SPI, I2C
2 CC
Registers
Spy-Bi
Wire
RST/NMI
Functional Block Diagram, MSP430G2x31
XIN XOUT
DVCC
DVSS
P2.x
P1.x
8
2
Port P1
Port P2
8 I/O
Interrupt
capability
pull-up/down
resistors
2 I/O
Interrupt
capability
pull-up/down
resistors
ACLK
Clock
System
ADC
SMCLK
Flash
2kB
1kB
MCLK
16MHz
CPU
MAB
incl. 16
Registers
MDB
Emulation
2BP
JTAG
Interface
RAM
128B
10-Bit
8 Ch.
Autoscan
1 ch DMA
USI
Brownout
Protection
Watchdog
WDT+
15-Bit
Spy-Bi
Wire
Timer0_A2
2 CC
Registers
Universal
Serial
Interface
SPI, I2C
RST/NMI
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Table 2. Terminal Functions
TERMINAL
NAME
NO.
I/O
DESCRIPTION
N, PW
RSA
P1.0/
TA0CLK/
ACLK/
A0
2
1
I/O
General-purpose digital I/O pin
Timer0_A, clock signal TACLK input
ACLK signal output
ADC10 analog input A0 (1)
P1.1/
TA0.0/
A1
3
2
I/O
General-purpose digital I/O pin
Timer0_A, capture: CCI0A input, compare: Out0 output
ADC10 analog input A1 (1)
P1.2/
TA0.1/
A2
4
3
I/O
General-purpose digital I/O pin
Timer0_A, capture: CCI1A input, compare: Out1 output
ADC10 analog input A2 (1)
I/O
General-purpose digital I/O pin
ADC10, conversion clock output (1)
ADC10 analog input A3 (1)
ADC10 negative reference voltage (1)
I/O
General-purpose digital I/O pin
SMCLK signal output
ADC10 analog input A4 (1)
ADC10 positive reference voltage (1)
JTAG test clock, input terminal for device programming and test
I/O
General-purpose digital I/O pin
Timer0_A, compare: Out0 output
ADC10 analog input A5 (1)
USI: clock input in I2C mode; clock input/output in SPI mode
JTAG test mode select, input terminal for device programming and test
I/O
General-purpose digital I/O pin
Timer0_A, capture: CCI1A input, compare: Out1 output
ADC10 analog input A6 (1)
USI: Data output in SPI mode
USI: I2C clock in I2C mode
JTAG test data input or test clock input during programming and test
P1.3/
ADC10CLK/
A3/
VREF-/VEREF
P1.4/
SMCLK/
A4/
VREF+/VEREF+/
TCK
P1.5/
TA0.0/
A5/
SCLK/
TMS
5
6
7
P1.6/
TA0.1/
A6/
SDO/
SCL/
TDI/TCLK
8
4
5
6
7
P1.7/
A7/
SDI/
SDA/
TDO/TDI (2)
9
8
I/O
General-purpose digital I/O pin
ADC10 analog input A7 (1)
USI: Data input in SPI mode
USI: I2C data in I2C mode
JTAG test data output terminal or test data input during programming and test
XIN/
P2.6/
TA0.1
13
12
I/O
Input terminal of crystal oscillator
General-purpose digital I/O pin
Timer0_A, compare: Out1 output
XOUT/
P2.7
12
11
I/O
Output terminal of crystal oscillator (3)
General-purpose digital I/O pin
RST/
NMI/
SBWTDIO
10
9
I
Reset
Nonmaskable interrupt input
Spy-Bi-Wire test data input/output during programming and test
TEST/
SBWTCK
11
10
I
Selects test mode for JTAG pins on Port 1. The device protection fuse is connected to TEST.
Spy-Bi-Wire test clock input during programming and test
DVCC
1
15, 16
NA
Supply voltage
DVSS
14
13, 14
NA
Ground reference
-
Pad
NA
QFN package pad connection to VSS recommended.
QFN Pad
(1)
(2)
(3)
6
MSP430G2x31 only
TDO or TDI is selected via JTAG instruction.
If XOUT/P2.7 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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SHORT-FORM DESCRIPTION
CPU
The MSP430 CPU has a 16-bit RISC architecture
that is highly transparent to the application. All
operations, other than program-flow instructions, are
performed as register operations in conjunction with
seven addressing modes for source operand and four
addressing modes for destination operand.
Program Counter
PC/R0
Stack Pointer
SP/R1
Status Register
SR/CG1/R2
Constant Generator
The CPU is integrated with 16 registers that provide
reduced instruction execution time. The register-toregister operation execution time is one cycle of the
CPU clock.
Four of the registers, R0 to R3, are dedicated as
program counter, stack pointer, status register, and
constant generator, respectively. The remaining
registers are general-purpose registers.
Peripherals are connected to the CPU using data,
address, and control buses, and can be handled with
all instructions.
The instruction set consists of the original 51
instructions with three formats and seven address
modes and additional instructions for the expanded
address range. Each instruction can operate on word
and byte data.
Instruction Set
The instruction set consists of 51 instructions with
three formats and seven address modes. Each
instruction can operate on word and byte data.
Table 3 shows examples of the three types of
instruction formats; Table 4 shows the address
modes.
CG2/R3
General-Purpose Register
R4
General-Purpose Register
R5
General-Purpose Register
R6
General-Purpose Register
R7
General-Purpose Register
R8
General-Purpose Register
R9
General-Purpose Register
R10
General-Purpose Register
R11
General-Purpose Register
R12
General-Purpose Register
R13
General-Purpose Register
R14
General-Purpose Register
R15
Table 3. Instruction Word Formats
INSTRUCTION FORMAT
SYNTAX
OPERATION
Dual operands, source-destination
ADD R4,R5
R4 + R5 ---> R5
Single operands, destination only
CALL R8
PC -->(TOS), R8--> PC
Relative jump, un/conditional
JNE
Jump-on-equal bit = 0
Table 4. Address Mode Descriptions (1)
(1)
ADDRESS MODE
S
D
SYNTAX
EXAMPLE
OPERATION
Register
✓
✓
MOV Rs,Rd
MOV R10,R11
R10 -- --> R11
Indexed
✓
✓
MOV X(Rn),Y(Rm)
MOV 2(R5),6(R6)
M(2+R5) -- --> M(6+R6)
Symbolic (PC relative)
✓
✓
MOV EDE,TONI
M(EDE) -- --> M(TONI)
Absolute
✓
✓
MOV &MEM,&TCDAT
M(MEM) -- --> M(TCDAT)
Indirect
✓
MOV @Rn,Y(Rm)
MOV @R10,Tab(R6)
M(R10) -- --> M(Tab+R6)
Indirect autoincrement
✓
MOV @Rn+,Rm
MOV @R10+,R11
M(R10) -- --> R11
R10 + 2-- --> R10
Immediate
✓
MOV #X,TONI
MOV #45,TONI
#45 -- --> M(TONI)
S = source, D = destination
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Operating Modes
The MSP430 has one active mode and five software selectable low-power modes of operation. An interrupt
event can wake up the device from any of the low-power modes, service the request, and restore back to the
low-power mode on return from the interrupt program.
The following six operating modes can be configured by software:
• Active mode (AM)
– All clocks are active
• Low-power mode 0 (LPM0)
– CPU is disabled
– ACLK and SMCLK remain active, MCLK is disabled
• Low-power mode 1 (LPM1)
– CPU is disabled
– ACLK and SMCLK remain active, MCLK is disabled
– DCO's dc generator is disabled if DCO not used in active mode
• Low-power mode 2 (LPM2)
– CPU is disabled
– MCLK and SMCLK are disabled
– DCO's dc generator remains enabled
– ACLK remains active
• Low-power mode 3 (LPM3)
– CPU is disabled
– MCLK and SMCLK are disabled
– DCO's dc generator is disabled
– ACLK remains active
• Low-power mode 4 (LPM4)
– CPU is disabled
– ACLK is disabled
– MCLK and SMCLK are disabled
– DCO's dc generator is disabled
– Crystal oscillator is stopped
8
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Interrupt Vector Addresses
The interrupt vectors and the power-up starting address are located in the address range 0FFFFh to 0FFC0h.
The vector contains the 16-bit address of the appropriate interrupt handler instruction sequence.
If the reset vector (located at address 0FFFEh) contains 0FFFFh (for example, flash is not programmed) the
CPU goes into LPM4 immediately after power-up.
Table 5. Interrupt Sources, Flags, and Vectors
INTERRUPT SOURCE
INTERRUPT FLAG
Power-Up
External Reset
Watchdog Timer+
Flash key violation
PC out-of-range (1)
PORIFG
RSTIFG
WDTIFG
KEYV (2)
NMI
Oscillator fault
Flash memory access violation
NMIIFG
OFIFG
ACCVIFG (2) (3)
Watchdog Timer+
WDTIFG
Timer_A2
Timer_A2
ADC10
ADC10IFG
(4) (5)
WORD
ADDRESS
PRIORITY
Reset
0FFFEh
31, highest
(non)-maskable
(non)-maskable
(non)-maskable
0FFFCh
30
0FFFAh
29
0FFF8h
28
0FFF6h
27
maskable
0FFF4h
26
maskable
0FFF2h
25
maskable
0FFF0h
24
0FFEEh
23
0FFECh
22
maskable
0FFEAh
21
USI
USIIFG, USISTTIFG (2) (4)
maskable
0FFE8h
20
I/O Port P2 (two flags)
P2IFG.6 to P2IFG.7 (2) (4)
maskable
0FFE6h
19
(2) (4)
maskable
0FFE4h
18
0FFE2h
17
0FFE0h
16
0FFDEh to
0FFC0h
15 to 0, lowest
See
(2)
(3)
(4)
(5)
(6)
TACCR1 CCIFG, TAIFG (2) (4)
(5)
I/O Port P1 (eight flags)
(1)
TACCR0 CCIFG
(4)
SYSTEM
INTERRUPT
P1IFG.0 to P1IFG.7
(6)
A reset is generated if the CPU tries to fetch instructions from within the module register memory address range (0h to 01FFh) or from
within unused address ranges.
Multiple source flags
(non)-maskable: the individual interrupt-enable bit can disable an interrupt event, but the general interrupt enable cannot.
Interrupt flags are located in the module.
MSP430G2x31 only
The interrupt vectors at addresses 0FFDEh to 0FFC0h are not used in this device and can be used for regular program code if
necessary.
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Special Function Registers (SFRs)
Most interrupt and module enable bits are collected into the lowest address space. Special function register bits
not allocated to a functional purpose are not physically present in the device. Simple software access is provided
with this arrangement.
Legend
rw:
rw-0,1:
rw-(0,1):
Bit can be read and written.
Bit can be read and written. It is reset or set by PUC.
Bit can be read and written. It is reset or set by POR.
SFR bit is not present in device.
Table 6. Interrupt Enable Register 1 and 2
Address
7
6
00h
WDTIE
OFIE
NMIIE
ACCVIE
Address
5
4
1
0
ACCVIE
NMIIE
3
2
OFIE
WDTIE
rw-0
rw-0
rw-0
rw-0
Watchdog Timer interrupt enable. Inactive if watchdog mode is selected. Active if Watchdog Timer is configured in
interval timer mode.
Oscillator fault interrupt enable
(Non)maskable interrupt enable
Flash access violation interrupt enable
7
6
5
4
3
2
1
0
01h
Table 7. Interrupt Flag Register 1 and 2
Address
7
6
5
02h
WDTIFG
OFIFG
PORIFG
RSTIFG
NMIIFG
Address
4
3
2
1
0
NMIIFG
RSTIFG
PORIFG
OFIFG
WDTIFG
rw-0
rw-(0)
rw-(1)
rw-1
rw-(0)
Set on watchdog timer overflow (in watchdog mode) or security key violation.
Reset on VCC power-on or a reset condition at the RST/NMI pin in reset mode.
Flag set on oscillator fault.
Power-On Reset interrupt flag. Set on VCC power-up.
External reset interrupt flag. Set on a reset condition at RST/NMI pin in reset mode. Reset on VCC power-up.
Set via RST/NMI pin
7
6
5
4
3
2
1
0
03h
10
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Memory Organization
Table 8. Memory Organization
MSP430G2021
MSP430G2031
MSP430G2121
MSP430G2131
MSP430G2221
MSP430G2231
Memory
Main: interrupt vector
Main: code memory
Size
Flash
Flash
512B
0xFFFF to 0xFFC0
0xFFFF to 0xFE00
1kB
0xFFFF to 0xFFC0
0xFFFF to 0xFC00
2kB
0xFFFF to 0xFFC0
0xFFFF to 0xF800
Information memory
Size
Flash
256 Byte
010FFh to 01000h
256 Byte
010FFh to 01000h
256 Byte
010FFh to 01000h
RAM
Size
128B
027Fh to 0200h
128B
027Fh to 0200h
128B
027Fh to 0200h
Peripherals
16-bit
8-bit
8-bit SFR
01FFh to 0100h
0FFh to 010h
0Fh to 00h
01FFh to 0100h
0FFh to 010h
0Fh to 00h
01FFh to 0100h
0FFh to 010h
0Fh to 00h
Flash Memory
The flash memory can be programmed via the Spy-Bi-Wire/JTAG port or in-system by the CPU. The CPU can
perform single-byte and single-word writes to the flash memory. Features of the flash memory include:
• Flash memory has n segments of main memory and four segments of information memory (A to D) of
64 bytes each. Each segment in main memory is 512 bytes in size.
• Segments 0 to n may be erased in one step, or each segment may be individually erased.
• Segments A to D can be erased individually or as a group with segments 0 to n. Segments A to D are also
called information memory.
• Segment A contains calibration data. After reset segment A is protected against programming and erasing. It
can be unlocked but care should be taken not to erase this segment if the device-specific calibration data is
required.
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Peripherals
Peripherals are connected to the CPU through data, address, and control buses and can be handled using all
instructions. For complete module descriptions, see the MSP430x2xx Family User's Guide (SLAU144).
Oscillator and System Clock
The clock system is supported by the basic clock module that includes support for a 32768-Hz watch crystal
oscillator, an internal very-low-power low-frequency oscillator and an internal digitally controlled oscillator (DCO).
The basic clock module is designed to meet the requirements of both low system cost and low power
consumption. The internal DCO provides a fast turn-on clock source and stabilizes in less than 1µs. The basic
clock module provides the following clock signals:
• Auxiliary clock (ACLK), sourced either from a 32768-Hz watch crystal or the internal LF oscillator.
• Main clock (MCLK), the system clock used by the CPU.
• Sub-Main clock (SMCLK), the sub-system clock used by the peripheral modules.
Table 9. DCO Calibration Data
(Provided From Factory In Flash Information Memory Segment A)
DCO FREQUENCY
1 MHz
CALIBRATION
REGISTER
SIZE
CALBC1_1MHZ
byte
010FFh
CALDCO_1MHZ
byte
010FEh
ADDRESS
Brownout
The brownout circuit is implemented to provide the proper internal reset signal to the device during power on and
power off.
Digital I/O
There is one 8-bit I/O port implemented—port P1—and two bits of I/O port P2:
• All individual I/O bits are independently programmable.
• Any combination of input, output, and interrupt condition is possible.
• Edge-selectable interrupt input capability for all the eight bits of port P1 and the two bits of port P2.
• Read/write access to port-control registers is supported by all instructions.
• Each I/O has an individually programmable pull-up/pull-down resistor.
WDT+ Watchdog Timer
The primary function of the watchdog timer (WDT+) module is to perform a controlled system restart after a
software problem occurs. If the selected time interval expires, a system reset is generated. If the watchdog
function is not needed in an application, the module can be disabled or configured as an interval timer and can
generate interrupts at selected time intervals.
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Timer_A2
Timer_A2 is a 16-bit timer/counter with two capture/compare registers. Timer_A2 can support multiple
capture/compares, PWM outputs, and interval timing. Timer_A2 also has extensive interrupt capabilities.
Interrupts may be generated from the counter on overflow conditions and from each of the capture/compare
registers.
Table 10. Timer_A2 Signal Connections – Device With ADC10
INPUT PIN NUMBER
PW, N
RSA
DEVICE INPUT
SIGNAL
2 - P1.0
1 - P1.0
TACLK
MODULE
INPUT NAME
TACLK
ACLK
ACLK
SMCLK
SMCLK
MODULE
BLOCK
MODULE
OUTPUT
SIGNAL
Timer
NA
OUTPUT PIN NUMBER
PW, N
RSA
2 - P1.0
1 - P1.0
TACLK
INCLK
3 - P1.1
2 - P1.1
TA0
CCI0A
3 - P1.1
2 - P1.1
ACLK (internal)
CCI0B
7 - P1.5
6 - P1.5
VSS
GND
VCC
VCC
CCR0
TA0
4 - P1.2
3 - P1.2
TA1
CCI1A
4 - P1.2
3 - P1.2
8 - P1.6
7 - P1.6
TA1
CCI1B
8 - P1.6
7 - P1.6
VSS
GND
13 - P2.6
12 - P2.6
VCC
VCC
CCR1
TA1
USI
The universal serial interface (USI) module is used for serial data communication and provides the basic
hardware for synchronous communication protocols like SPI and I2C.
ADC10 (MSP430G2x31 only)
The ADC10 module supports fast, 10-bit analog-to-digital conversions. The module implements a 10-bit SAR
core, sample select control, reference generator and data transfer controller, or DTC, for automatic conversion
result handling, allowing ADC samples to be converted and stored without any CPU intervention.
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Peripheral File Map
Table 11. Peripherals With Word Access
MODULE
ADC10 (MSP430G2x31 only)
Timer_A
REGISTER
NAME
REGISTER DESCRIPTION
ADC data transfer start address
ADC10SA
1BCh
ADC control 0
ADC10CTL0
01B0h
ADC control 1
ADC10CTL0
01B2h
ADC memory
ADC10MEM
01B4h
Capture/compare register
TACCR1
0174h
Capture/compare register
TACCR0
0172h
Timer_A register
TAR
0170h
Capture/compare control
TACCTL1
0164h
Capture/compare control
TACCTL0
0162h
Timer_A control
TACTL
0160h
TAIV
012Eh
Flash control 3
FCTL3
012Ch
Flash control 2
FCTL2
012Ah
Flash control 1
FCTL1
0128h
WDTCTL
0120h
REGISTER
NAME
OFFSET
Timer_A interrupt vector
Flash Memory
Watchdog Timer+
OFFSET
Watchdog/timer control
Table 12. Peripherals With Byte Access
MODULE
ADC10 (MSP430G2x31 only)
USI
REGISTER DESCRIPTION
ADC analog enable
ADC10AE0
04Ah
ADC data transfer control 1
ADC10DTC1
049h
ADC data transfer control 0
ADC10DTC0
048h
USI control 0
USICTL0
078h
USI control 1
USICTL1
079h
USICKCTL
07Ah
USI clock control
USI bit counter
USICNT
07Bh
USISR
07Ch
Basic clock system control 3
BCSCTL3
053h
Basic clock system control 2
BCSCTL2
058h
Basic clock system control 1
BCSCTL1
057h
DCO clock frequency control
DCOCTL
056h
USI shift register
Basic Clock System+
Port P2
Port P2 resistor enable
P2REN
02Fh
Port P2 selection
P2SEL
02Eh
P2IE
02Dh
Port P2 interrupt edge select
P2IES
02Ch
Port P2 interrupt flag
P2IFG
02Bh
Port P2 direction
P2DIR
02Ah
Port P2 output
P2OUT
029h
P2IN
028h
Port P2 interrupt enable
Port P2 input
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Table 12. Peripherals With Byte Access (continued)
REGISTER
NAME
OFFSET
Port P1 resistor enable
P1REN
027h
Port P1 selection
P1SEL
026h
P1IE
025h
Port P1 interrupt edge select
P1IES
024h
Port P1 interrupt flag
P1IFG
023h
Port P1 direction
P1DIR
022h
Port P1 output
MODULE
Port P1
REGISTER DESCRIPTION
Port P1 interrupt enable
Special Function
P1OUT
021h
Port P1 input
P1IN
020h
SFR interrupt flag 2
IFG2
003h
SFR interrupt flag 1
IFG1
002h
SFR interrupt enable 2
IE2
001h
SFR interrupt enable 1
IE1
000h
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Absolute Maximum Ratings (1)
Voltage applied at VCC to VSS
–0.3 V to 4.1 V
Voltage applied to any pin (2)
–0.3 V to VCC + 0.3 V
Diode current at any device pin
Storage temperature range, Tstg
(1)
±2 mA
(3)
Unprogrammed device
–55°C to 150°C
Programmed device
–55°C to 150°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltages referenced to VSS. The JTAG fuse-blow voltage, VFB, is allowed to exceed the absolute maximum rating. The voltage is
applied to the TEST pin when blowing the JTAG fuse.
Higher temperature may be applied during board soldering according to the current JEDEC J-STD-020 specification with peak reflow
temperatures not higher than classified on the device label on the shipping boxes or reels.
(2)
(3)
Recommended Operating Conditions
Typical values are specified at VCC = 3.3 V and TA = 25°C (unless otherwise noted)
MIN
VCC
Supply voltage
VSS
Supply voltage
TA
Operating free-air temperature
(1)
(2)
MAX
1.8
3.6
During flash programming
2.2
3.6
I version
–40
85
VCC = 1.8 V,
Duty cycle = 50% ± 10%
dc
6
VCC = 2.7 V,
Duty cycle = 50% ± 10%
dc
12
VCC = 3.3 V,
Duty cycle = 50% ± 10%
dc
16
0
Processor frequency (maximum MCLK frequency) (1) (2)
fSYSTEM
NOM
During program execution
UNIT
V
V
°C
MHz
The MSP430 CPU is clocked directly with MCLK. Both the high and low phase of MCLK must not exceed the pulse width of the
specified maximum frequency.
Modules might have a different maximum input clock specification. See the specification of the respective module in this data sheet.
Legend :
System Frequency - MHz
16 MHz
Supply voltage range,
during flash memory
programming
12 MHz
Supply voltage range,
during program execution
6 MHz
1.8 V
Note:
2.7 V
2.2 V
Supply Voltage - V
3.3 V 3.6 V
Minimum processor frequency is defined by system clock. Flash program or erase operations require a minimum VCC
of 2.2 V.
Figure 1. Safe Operating Area
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Electrical Characteristics
Active Mode Supply Current Into VCC Excluding External Current
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (1) (2)
PARAMETER
IAM,1MHz
(1)
(2)
TEST CONDITIONS
TA
fDCO = fMCLK = fSMCLK = 1 MHz,
fACLK = 32768 Hz,
Program executes in flash,
BCSCTL1 = CALBC1_1MHZ,
DCOCTL = CALDCO_1MHZ,
CPUOFF = 0, SCG0 = 0, SCG1 = 0,
OSCOFF = 0
Active mode (AM)
current (1 MHz)
VCC
MIN
TYP
2.2 V
220
3V
300
MAX
UNIT
µA
370
All inputs are tied to 0 V or to VCC. Outputs do not source or sink any current.
The currents are characterized with a Micro Crystal CC4V-T1A SMD crystal with a load capacitance of 9 pF. The internal and external
load capacitance is chosen to closely match the required 9 pF.
Typical Characteristics – Active Mode Supply Current (Into VCC)
5.0
4.0
Active Mode Current − mA
Active Mode Current − mA
f DCO = 16 MHz
4.0
3.0
f DCO = 12 MHz
2.0
f DCO = 8 MHz
1.0
TA = 85 °C
3.0
TA = 25 °C
VCC = 3 V
2.0
TA = 85 °C
TA = 25 °C
1.0
f DCO = 1 MHz
0.0
1.5
2.0
2.5
3.0
3.5
VCC − Supply Voltage − V
Figure 2. Active Mode Current vs VCC, TA = 25°C
Copyright © 2010–2013, Texas Instruments Incorporated
VCC = 2.2 V
4.0
0.0
0.0
4.0
8.0
12.0
16.0
f DCO − DCO Frequency − MHz
Figure 3. Active Mode Current vs DCO Frequency
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Low-Power Mode Supply Currents (Into VCC) Excluding External Current
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (1)
PARAMETER
TA
VCC
Low-power mode 0
(LPM0) current (3)
fMCLK = 0 MHz,
fSMCLK = fDCO = 1 MHz,
fACLK = 32768 Hz,
BCSCTL1 = CALBC1_1MHZ,
DCOCTL = CALDCO_1MHZ,
CPUOFF = 1, SCG0 = 0, SCG1 = 0,
OSCOFF = 0
25°C
2.2 V
65
µA
ILPM2
Low-power mode 2
(LPM2) current (4)
fMCLK = fSMCLK = 0 MHz,
fDCO = 1 MHz,
fACLK = 32768 Hz,
BCSCTL1 = CALBC1_1MHZ,
DCOCTL = CALDCO_1MHZ,
CPUOFF = 1, SCG0 = 0, SCG1 = 1,
OSCOFF = 0
25°C
2.2 V
22
µA
ILPM3,LFXT1
Low-power mode 3
(LPM3) current (4)
fDCO = fMCLK = fSMCLK = 0 MHz,
fACLK = 32768 Hz,
CPUOFF = 1, SCG0 = 1, SCG1 = 1,
OSCOFF = 0
25°C
2.2 V
0.7
1.5
µA
ILPM3,VLO
Low-power mode 3
current, (LPM3) (4)
fDCO = fMCLK = fSMCLK = 0 MHz,
fACLK from internal LF oscillator (VLO),
CPUOFF = 1, SCG0 = 1, SCG1 = 1,
OSCOFF = 0
25°C
2.2 V
0.5
0.7
µA
2.2 V
0.1
0.5
µA
ILPM4
fDCO = fMCLK = fSMCLK = 0 MHz,
fACLK = 0 Hz,
CPUOFF = 1, SCG0 = 1, SCG1 = 1,
OSCOFF = 1
25°C
Low-power mode 4
(LPM4) current (5)
85°C
2.2 V
0.8
1.5
µA
ILPM0,1MHz
(1)
(2)
(3)
(4)
(5)
TEST CONDITIONS
MIN
(2)
TYP
MAX
UNIT
All inputs are tied to 0 V or to VCC. Outputs do not source or sink any current.
The currents are characterized with a Micro Crystal CC4V-T1A SMD crystal with a load capacitance of 9 pF.
Current for brownout and WDT clocked by SMCLK included.
Current for brownout and WDT clocked by ACLK included.
Current for brownout included.
Typical Characteristics Low-Power Mode Supply Currents
3.00
2.50
2.75
2.25
ILPM4 – Low-Power Mode Current – µA
ILPM3 – Low-Power Mode Current – µA
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
2.50
2.25
2.00
1.75
1.50
Vcc = 3.6 V
1.25
Vcc = 3 V
1.00
Vcc = 2.2 V
0.75
0.50
Vcc = 1.8 V
0.25
0.00
-40
-20
0
20
40
60
TA – Temperature – °C
Figure 4. LPM3 Current vs Temperature
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2.00
1.75
1.50
1.25
Vcc = 3.6 V
1.00
Vcc = 3 V
0.75
Vcc = 2.2 V
0.50
0.25
0.00
-40
Vcc = 1.8 V
-20
0
20
40
60
80
TA – Temperature – °C
Figure 5. LPM4 Current vs Temperature
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Schmitt-Trigger Inputs – Ports Px
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VIT+
Positive-going input threshold voltage
VIT–
Negative-going input threshold voltage
Vhys
Input voltage hysteresis (VIT+ – VIT–)
VCC
MIN
RPull
Pullup/pulldown resistor
CI
Input capacitance
VIN = VSS or VCC
MAX
0.45 VCC
0.75 VCC
1.35
2.25
3V
For pullup: VIN = VSS
For pulldown: VIN = VCC
TYP
UNIT
V
0.25 VCC
0.55 VCC
3V
0.75
1.65
3V
0.3
1
V
3V
20
50
kΩ
35
5
V
pF
Leakage Current – Ports Px
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
Ilkg(Px.y)
(1)
(2)
TEST CONDITIONS
VCC
(1) (2)
High-impedance leakage current
MIN
3V
MAX
UNIT
±50
nA
The leakage current is measured with VSS or VCC applied to the corresponding pin(s), unless otherwise noted.
The leakage of the digital port pins is measured individually. The port pin is selected for input and the pullup/pulldown resistor is
disabled.
Outputs – Ports Px
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
VOH
High-level output voltage
I(OHmax) = –6 mA (1)
3V
VCC – 0.3
V
VOL
Low-level output voltage
I(OLmax) = 6 mA (1)
3V
VSS + 0.3
V
(1)
The maximum total current, I(OHmax) and I(OLmax), for all outputs combined should not exceed ±48 mA to hold the maximum voltage drop
specified.
Output Frequency – Ports Px
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
fPx.y
Port output frequency
(with load)
Px.y, CL = 20 pF, RL = 1 kΩ
fPort_CLK
Clock output frequency
Px.y, CL = 20 pF (2)
(1)
(2)
(1) (2)
VCC
MIN
TYP
MAX
UNIT
3V
12
MHz
3V
16
MHz
A resistive divider with 2 × 0.5 kΩ between VCC and VSS is used as load. The output is connected to the center tap of the divider.
The output voltage reaches at least 10% and 90% VCC at the specified toggle frequency.
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Typical Characteristics – Outputs
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
TYPICAL LOW-LEVEL OUTPUT CURRENT
vs
LOW-LEVEL OUTPUT VOLTAGE
TYPICAL LOW-LEVEL OUTPUT CURRENT
vs
LOW-LEVEL OUTPUT VOLTAGE
50
VCC = 2.2 V
P1.7
TA = 25°C
25
TA = 85°C
20
15
10
5
I OL − Typical Low-Level Output Current − mA
I OL − Typical Low-Level Output Current − mA
30
0
0.5
1
1.5
2
40
TA = 85°C
30
20
10
0
2.5
0.5
1
1.5
2
2.5
3
VOL − Low-Level Output Voltage − V
Figure 6.
VOL − Low-Level Output Voltage − V
Figure 7.
TYPICAL HIGH-LEVEL OUTPUT CURRENT
vs
HIGH-LEVEL OUTPUT VOLTAGE
TYPICAL HIGH-LEVEL OUTPUT CURRENT
vs
HIGH-LEVEL OUTPUT VOLTAGE
3.5
0
0
VCC = 2.2 V
P1.7
I OH − Typical High-Level Output Current − mA
I OH − Typical High-Level Output Current − mA
TA = 25°C
0
0
−5
−10
−15
TA = 85°C
−20
TA = 25°C
−25
0
0.5
VCC = 3 V
P1.7
−10
−20
−30
TA = 85°C
−40
TA = 25°C
−50
1
1.5
2
VOH − High-Level Output Voltage − V
Figure 8.
20
VCC = 3 V
P1.7
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2.5
0
0.5
1
1.5
2
2.5
3
3.5
VOH − High-Level Output Voltage − V
Figure 9.
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POR, BOR (1) (2)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
VCC(start)
See Figure 10
dVCC/dt ≤ 3 V/s
V(B_IT–)
See Figure 10 through Figure 12
dVCC/dt ≤ 3 V/s
1.35
V
Vhys(B_IT–)
See Figure 10
dVCC/dt ≤ 3 V/s
140
mV
td(BOR)
See Figure 10
t(reset)
Pulse duration needed at RST/NMI pin to
accepted reset internally
(1)
(2)
0.7 × V(B_IT–)
V
2000
2.2 V, 3 V
2
µs
µs
The current consumption of the brownout module is already included in the ICC current consumption data. The voltage level V(B_IT–) +
Vhys(B_IT–)is ≤ 1.8 V.
During power up, the CPU begins code execution following a period of td(BOR) after VCC = V(B_IT–) + Vhys(B_IT–). The default DCO settings
must not be changed until VCC ≥ VCC(min), where VCC(min) is the minimum supply voltage for the desired operating frequency.
VCC
Vhys(B_IT−)
V(B_IT−)
VCC(start)
1
0
t d(BOR)
Figure 10. POR and BOR vs Supply Voltage
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Typical Characteristics – POR and BOR
VCC
3V
2
VCC(drop) − V
VCC = 3 V
Typical Conditions
t pw
1.5
1
VCC(drop)
0.5
0
0.001
1
1000
1 ns
1 ns
t pw − Pulse Width − µs
t pw − Pulse Width − µs
Figure 11. VCC(drop) Level With a Square Voltage Drop to Generate a POR or BOR Signal
VCC
2
t pw
3V
VCC(drop) − V
VCC = 3 V
1.5
Typical Conditions
1
VCC(drop)
0.5
0
0.001
t f = tr
1
1000
tf
tr
t pw − Pulse Width − µs
t pw − Pulse Width − µs
Figure 12. VCC(drop) Level With a Triangle Voltage Drop to Generate a POR or BOR Signal
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Main DCO Characteristics
•
•
•
All ranges selected by RSELx overlap with RSELx + 1: RSELx = 0 overlaps RSELx = 1, ... RSELx = 14
overlaps RSELx = 15.
DCO control bits DCOx have a step size as defined by parameter SDCO.
Modulation control bits MODx select how often fDCO(RSEL,DCO+1) is used within the period of 32 DCOCLK
cycles. The frequency fDCO(RSEL,DCO) is used for the remaining cycles. The frequency is an average equal to:
faverage =
32 × fDCO(RSEL,DCO) × fDCO(RSEL,DCO+1)
MOD × fDCO(RSEL,DCO) + (32 – MOD) × fDCO(RSEL,DCO+1)
DCO Frequency
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
VCC
Supply voltage
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
RSELx < 14
1.8
3.6
V
RSELx = 14
2.2
3.6
V
RSELx = 15
3
3.6
V
0.14
MHz
fDCO(0,0)
DCO frequency (0, 0)
RSELx = 0, DCOx = 0, MODx = 0
3V
fDCO(0,3)
DCO frequency (0, 3)
RSELx = 0, DCOx = 3, MODx = 0
3V
0.12
MHz
fDCO(1,3)
DCO frequency (1, 3)
RSELx = 1, DCOx = 3, MODx = 0
3V
0.15
MHz
fDCO(2,3)
DCO frequency (2, 3)
RSELx = 2, DCOx = 3, MODx = 0
3V
0.21
MHz
fDCO(3,3)
DCO frequency (3, 3)
RSELx = 3, DCOx = 3, MODx = 0
3V
0.30
MHz
fDCO(4,3)
DCO frequency (4, 3)
RSELx = 4, DCOx = 3, MODx = 0
3V
0.41
MHz
fDCO(5,3)
DCO frequency (5, 3)
RSELx = 5, DCOx = 3, MODx = 0
3V
0.58
MHz
fDCO(6,3)
DCO frequency (6, 3)
RSELx = 6, DCOx = 3, MODx = 0
3V
fDCO(7,3)
DCO frequency (7, 3)
RSELx = 7, DCOx = 3, MODx = 0
3V
fDCO(8,3)
DCO frequency (8, 3)
RSELx = 8, DCOx = 3, MODx = 0
3V
1.6
MHz
fDCO(9,3)
DCO frequency (9, 3)
RSELx = 9, DCOx = 3, MODx = 0
3V
2.3
MHz
fDCO(10,3)
DCO frequency (10, 3)
RSELx = 10, DCOx = 3, MODx = 0
3V
3.4
MHz
fDCO(11,3)
DCO frequency (11, 3)
RSELx = 11, DCOx = 3, MODx = 0
3V
4.25
fDCO(12,3)
DCO frequency (12, 3)
RSELx = 12, DCOx = 3, MODx = 0
3V
fDCO(13,3)
DCO frequency (13, 3)
RSELx = 13, DCOx = 3, MODx = 0
3V
fDCO(14,3)
DCO frequency (14, 3)
RSELx = 14, DCOx = 3, MODx = 0
3V
fDCO(15,3)
DCO frequency (15, 3)
RSELx = 15, DCOx = 3, MODx = 0
3V
15.25
MHz
fDCO(15,7)
DCO frequency (15, 7)
RSELx = 15, DCOx = 7, MODx = 0
3V
21
MHz
SRSEL
Frequency step between
range RSEL and RSEL+1
SRSEL = fDCO(RSEL+1,DCO)/fDCO(RSEL,DCO)
3V
1.35
ratio
SDCO
Frequency step between
tap DCO and DCO+1
SDCO = fDCO(RSEL,DCO+1)/fDCO(RSEL,DCO)
3V
1.08
ratio
Duty cycle
Measured at SMCLK output
3V
50
Copyright © 2010–2013, Texas Instruments Incorporated
0.06
0.80
0.8
MHz
1.5
4.3
MHz
7.3
7.8
8.6
MHz
MHz
MHz
13.9
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MHz
%
23
MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
www.ti.com
Calibrated DCO Frequencies – Tolerance
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA
VCC
MIN
TYP
MAX
UNIT
1-MHz tolerance over
temperature (1)
BCSCTL1= CALBC1_1MHz,
DCOCTL = CALDCO_1MHz,
calibrated at 30°C and 3 V
0°C to 85°C
3V
-3
±0.5
+3
%
1-MHz tolerance over VCC
BCSCTL1= CALBC1_1MHz,
DCOCTL = CALDCO_1MHz,
calibrated at 30°C and 3 V
30°C
1.8 V to 3.6 V
-3
±2
+3
%
1-MHz tolerance overall
BCSCTL1= CALBC1_1MHz,
DCOCTL = CALDCO_1MHz,
calibrated at 30°C and 3 V
-40°C to 85°C
1.8 V to 3.6 V
-6
±3
+6
%
(1)
This is the frequency change from the measured frequency at 30°C over temperature.
Wake-Up From Lower-Power Modes (LPM3/4) – Electrical Characteristics
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
tDCO,LPM3/4
DCO clock wake-up time from
LPM3/4 (1)
tCPU,LPM3/4
CPU wake-up time from LPM3/4 (2)
(1)
(2)
VCC
BCSCTL1= CALBC1_1MHz,
DCOCTL = CALDCO_1MHz
MIN
3V
TYP
1.5
MAX
UNIT
µs
1/fMCLK +
tClock,LPM3/4
The DCO clock wake-up time is measured from the edge of an external wake-up signal (for example, port interrupt) to the first clock
edge observable externally on a clock pin (MCLK or SMCLK).
Parameter applicable only if DCOCLK is used for MCLK.
Typical Characteristics – DCO Clock Wake-Up Time From LPM3/4
DCO Wake Time − µs
10.00
RSELx = 0...11
RSELx = 12...15
1.00
0.10
0.10
1.00
10.00
DCO Frequency − MHz
Figure 13. DCO Wake-Up Time From LPM3 vs DCO Frequency
24
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MSP430G2x21
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
Crystal Oscillator, XT1, Low-Frequency Mode (1)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
fLFXT1,LF
LFXT1 oscillator crystal
frequency, LF mode 0, 1
fLFXT1,LF,logic
LFXT1 oscillator logic level
square wave input frequency, XTS = 0, XCAPx = 0, LFXT1Sx = 3
LF mode
OALF
Oscillation allowance for
LF crystals
CL,eff
fFault,LF
(1)
(2)
(3)
(4)
Integrated effective load
capacitance, LF mode (2)
XTS = 0, LFXT1Sx = 0 or 1
VCC
MIN
TYP
1.8 V to 3.6 V
1.8 V to 3.6 V
MAX
32768
10000
32768
XTS = 0, LFXT1Sx = 0,
fLFXT1,LF = 32768 Hz, CL,eff = 6 pF
500
XTS = 0, LFXT1Sx = 0,
fLFXT1,LF = 32768 Hz, CL,eff = 12 pF
200
UNIT
Hz
50000
Hz
kΩ
XTS = 0, XCAPx = 0
1
XTS = 0, XCAPx = 1
5.5
XTS = 0, XCAPx = 2
8.5
XTS = 0, XCAPx = 3
11
Duty cycle, LF mode
XTS = 0, Measured at P2.0/ACLK,
fLFXT1,LF = 32768 Hz
2.2 V
30
Oscillator fault frequency,
LF mode (3)
XTS = 0, XCAPx = 0, LFXT1Sx = 3 (4)
2.2 V
10
50
pF
70
%
10000
Hz
To improve EMI on the XT1 oscillator, the following guidelines should be observed.
(a) Keep the trace between the device and the crystal as short as possible.
(b) Design a good ground plane around the oscillator pins.
(c) Prevent crosstalk from other clock or data lines into oscillator pins XIN and XOUT.
(d) Avoid running PCB traces underneath or adjacent to the XIN and XOUT pins.
(e) Use assembly materials and praxis to avoid any parasitic load on the oscillator XIN and XOUT pins.
(f) If conformal coating is used, ensure that it does not induce capacitive/resistive leakage between the oscillator pins.
(g) Do not route the XOUT line to the JTAG header to support the serial programming adapter as shown in other documentation. This
signal is no longer required for the serial programming adapter.
Includes parasitic bond and package capacitance (approximately 2 pF per pin).
Since the PCB adds additional capacitance, it is recommended to verify the correct load by measuring the ACLK frequency. For a
correct setup, the effective load capacitance should always match the specification of the used crystal.
Frequencies below the MIN specification set the fault flag. Frequencies above the MAX specification do not set the fault flag.
Frequencies in between might set the flag.
Measured with logic-level input frequency but also applies to operation with crystals.
Internal Very-Low-Power Low-Frequency Oscillator (VLO)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
TA
VCC
MIN
TYP
MAX
fVLO
VLO frequency
PARAMETER
-40°C to 85°C
3V
4
12
20
dfVLO/dT
VLO frequency temperature drift
-40°C to 85°C
3V
25°C
1.8 V to 3.6 V
dfVLO/dVCC VLO frequency supply voltage drift
UNIT
kHz
0.5
%/°C
4
%/V
Timer_A
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
fTA
Timer_A input clock frequency
Internal: SMCLK, ACLK
External: TACLK, INCLK
Duty cycle = 50% ± 10%
tTA,cap
Timer_A capture timing
TA0, TA1
Copyright © 2010–2013, Texas Instruments Incorporated
VCC
MIN
TYP
MAX
fSYSTEM
3V
20
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UNIT
MHz
ns
25
MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
www.ti.com
USI, Universal Serial Interface
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
fUSI
USI clock frequency
External: SCLK,
Duty cycle = 50% ±10%,
SPI slave mode
VOL,I2C
Low-level output voltage on SDA and SCL
USI module in I2C mode,
I(OLmax) = 1.5 mA
VCC
MIN
TYP
MAX
fSYSTEM
3V
UNIT
MHz
VSS
+ 0.4
VSS
V
Typical Characteristics – USI Low-Level Output Voltage on SDA and SCL
5.0
5.0
TA = 25°C
4.0
3.0
TA = 85°C
2.0
1.0
0.0
0.0
0.2
0.4
0.6
0.8
1.0
VOL − Low-Level Output Voltage − V
Figure 14. USI Low-Level Output Voltage vs Output Current
26
TA = 25°C
VCC = 3 V
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IOL − Low-Level Output Current − mA
I OL − Low-Level Output Current − mA
VCC = 2.2 V
4.0
TA = 85°C
3.0
2.0
1.0
0.0
0.0
0.2
0.4
0.6
0.8
1.0
VOL − Low-Level Output Voltage − V
Figure 15. USI Low-Level Output Voltage vs Output Current
Copyright © 2010–2013, Texas Instruments Incorporated
MSP430G2x31
MSP430G2x21
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
10-Bit ADC, Power Supply and Input Range Conditions (MSP430G2x31 Only)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (1)
PARAMETER
VCC
TEST CONDITIONS
Analog supply voltage
VAx
Analog input voltage
IADC10
IREF+
VCC
VSS = 0 V
(2)
ADC10 supply current
TA
(3)
Reference supply current,
reference buffer disabled (4)
All Ax terminals, Analog inputs
selected in ADC10AE register
fADC10CLK = 5.0 MHz,
ADC10ON = 1, REFON = 0,
ADC10SHT0 = 1, ADC10SHT1 = 0,
ADC10DIV = 0
fADC10CLK = 5.0 MHz,
ADC10ON = 0, REF2_5V = 0,
REFON = 1, REFOUT = 0
fADC10CLK = 5.0 MHz,
ADC10ON = 0, REF2_5V = 1,
REFON = 1, REFOUT = 0
3V
25°C
3V
MIN
TYP
MAX
UNIT
2.2
3.6
V
0
VCC
V
0.6
mA
0.25
25°C
3V
mA
0.25
IREFB,0
Reference buffer supply
current with ADC10SR = 0 (4)
fADC10CLK = 5.0 MHz,
ADC10ON = 0, REFON = 1,
REF2_5V = 0, REFOUT = 1,
ADC10SR = 0
25°C
3V
1.1
mA
IREFB,1
Reference buffer supply
current with ADC10SR = 1 (4)
fADC10CLK = 5.0 MHz,
ADC10ON = 0, REFON = 1,
REF2_5V = 0, REFOUT = 1,
ADC10SR = 1
25°C
3V
0.5
mA
CI
Input capacitance
Only one terminal Ax can be selected
at one time
25°C
3V
RI
Input MUX ON resistance
0 V ≤ VAx ≤ VCC
25°C
3V
(1)
(2)
(3)
(4)
27
1000
pF
Ω
The leakage current is defined in the leakage current table with Px.y/Ax parameter.
The analog input voltage range must be within the selected reference voltage range VR+ to VR– for valid conversion results.
The internal reference supply current is not included in current consumption parameter IADC10.
The internal reference current is supplied via terminal VCC. Consumption is independent of the ADC10ON control bit, unless a
conversion is active. The REFON bit enables the built-in reference to settle before starting an A/D conversion.
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MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
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10-Bit ADC, Built-In Voltage Reference (MSP430G2x31 Only)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC,REF+
IVREF+ ≤ 1 mA, REF2_5V = 0
Positive built-in reference
analog supply voltage range IVREF+ ≤ 1 mA, REF2_5V = 1
VREF+
Positive built-in reference
voltage
ILD,VREF+
Maximum VREF+ load
current
VREF+ load regulation
IVREF+ ≤ IVREF+max, REF2_5V = 0
IVREF+ ≤ IVREF+max, REF2_5V = 1
VCC
IVREF+ = 500 µA ± 100 µA,
Analog input voltage VAx ≉ 1.25 V,
REF2_5V = 1
TYP
MAX
2.2
3V
UNIT
V
2.9
3V
IVREF+ = 500 µA ± 100 µA,
Analog input voltage VAx ≉ 0.75 V,
REF2_5V = 0
MIN
1.41
1.5
1.59
2.35
2.5
2.65
±1
V
mA
±2
3V
LSB
±2
VREF+ load regulation
response time
IVREF+ = 100 µA→900 µA,
VAx ≉ 0.5 × VREF+,
Error of conversion result ≤ 1 LSB,
ADC10SR = 0
3V
400
ns
CVREF+
Maximum capacitance at
pin VREF+
IVREF+ ≤ ±1 mA, REFON = 1, REFOUT = 1
3V
100
pF
TCREF+
Temperature coefficient
IVREF+ = const with 0 mA ≤ IVREF+ ≤ 1 mA
3V
±100
ppm/
°C
tREFON
Settling time of internal
reference voltage to 99.9%
VREF
IVREF+ = 0.5 mA, REF2_5V = 0,
REFON = 0 → 1
3.6 V
30
µs
tREFBURST
Settling time of reference
buffer to 99.9% VREF
IVREF+ = 0.5 mA,
REF2_5V = 1, REFON = 1,
REFBURST = 1, ADC10SR = 0
3V
2
µs
28
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
10-Bit ADC, External Reference (1) (MSP430G2x31 Only)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
VEREF+
TEST CONDITIONS
Positive external reference input
voltage range (2)
1.4
3
0
1.2
V
1.4
VCC
V
Differential external reference
input voltage range,
ΔVEREF = VEREF+ – VEREF–
VEREF+ > VEREF–
(1)
(2)
(3)
(4)
(5)
UNIT
VEREF– ≤ VEREF+ ≤ VCC – 0.15 V,
SREF1 = 1, SREF0 = 1 (3)
ΔVEREF
Static input current into VEREF–
MAX
VCC
VEREF+ > VEREF–
IVEREF–
TYP
1.4
Negative external reference input
voltage range (4)
Static input current into VEREF+
MIN
VEREF+ > VEREF–,
SREF1 = 1, SREF0 = 0
VEREF–
IVEREF+
VCC
V
(5)
0 V ≤ VEREF+ ≤ VCC,
SREF1 = 1, SREF0 = 0
3V
±1
0 V ≤ VEREF+ ≤ VCC – 0.15 V ≤ 3 V,
SREF1 = 1, SREF0 = 1 (3)
3V
0
0 V ≤ VEREF– ≤ VCC
3V
±1
µA
µA
The external reference is used during conversion to charge and discharge the capacitance array. The input capacitance, CI, is also the
dynamic load for an external reference during conversion. The dynamic impedance of the reference supply should follow the
recommendations on analog-source impedance to allow the charge to settle for 10-bit accuracy.
The accuracy limits the minimum positive external reference voltage. Lower reference voltage levels may be applied with reduced
accuracy requirements.
Under this condition the external reference is internally buffered. The reference buffer is active and requires the reference buffer supply
current IREFB. The current consumption can be limited to the sample and conversion period with REBURST = 1.
The accuracy limits the maximum negative external reference voltage. Higher reference voltage levels may be applied with reduced
accuracy requirements.
The accuracy limits the minimum external differential reference voltage. Lower differential reference voltage levels may be applied with
reduced accuracy requirements.
10-Bit ADC, Timing Parameters (MSP430G2x31 Only)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
ADC10SR = 0
fADC10CLK
ADC10 input clock
frequency
For specified performance of
ADC10 linearity parameters
fADC10OSC
ADC10 built-in
oscillator frequency
ADC10DIVx = 0, ADC10SSELx = 0,
fADC10CLK = fADC10OSC
ADC10 built-in oscillator, ADC10SSELx = 0,
fADC10CLK = fADC10OSC
tCONVERT
Conversion time
tADC10ON
Turn-on settling time
of the ADC
(1)
ADC10SR = 1
VCC
MIN
TYP
MAX
0.45
6.3
0.45
1.5
3V
3.7
6.3
3V
2.06
3.51
3V
(1)
MHz
MHz
µs
13 ×
ADC10DIV ×
1/fADC10CLK
fADC10CLK from ACLK, MCLK, or SMCLK,
ADC10SSELx ≠ 0
UNIT
100
ns
The condition is that the error in a conversion started after tADC10ON is less than ±0.5 LSB. The reference and input signal are already
settled.
10-Bit ADC, Linearity Parameters (MSP430G2x31 Only)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
MAX
UNIT
EI
Integral linearity error
PARAMETER
TEST CONDITIONS
3V
±1
LSB
ED
Differential linearity error
3V
±1
LSB
EO
Offset error
3V
±1
LSB
EG
Gain error
3V
±1.1
±2
LSB
ET
Total unadjusted error
3V
±2
±5
LSB
Source impedance RS < 100 Ω
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VCC
MIN
TYP
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MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
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10-Bit ADC, Temperature Sensor and Built-In VMID (MSP430G2x31 Only)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
ISENSOR
TEST CONDITIONS
Temperature sensor supply
current (1)
TCSENSOR
VCC
REFON = 0, INCHx = 0Ah,
TA = 25°C
ADC10ON = 1, INCHx = 0Ah
(2)
60
3V
3.55
tSensor(sample)
ADC10ON = 1, INCHx = 0Ah,
Error of conversion result ≤ 1 LSB
3V
IVMID
Current into divider at channel 11
ADC10ON = 1, INCHx = 0Bh
3V
VMID
VCC divider at channel 11
ADC10ON = 1, INCHx = 0Bh,
VMID ≉ 0.5 × VCC
3V
tVMID(sample)
Sample time required if channel
11 is selected (5)
ADC10ON = 1, INCHx = 0Bh,
Error of conversion result ≤ 1 LSB
3V
(2)
(3)
(4)
(5)
TYP
3V
Sample time required if channel
10 is selected (3)
(1)
MIN
MAX
UNIT
µA
mV/°C
30
µs
(4)
1.5
µA
V
1220
ns
The sensor current ISENSOR is consumed if (ADC10ON = 1 and REFON = 1) or (ADC10ON = 1 and INCH = 0Ah and sample signal is
high). When REFON = 1, ISENSOR is included in IREF+. When REFON = 0, ISENSOR applies during conversion of the temperature sensor
input (INCH = 0Ah).
The following formula can be used to calculate the temperature sensor output voltage:
VSensor,typ = TCSensor (273 + T [°C] ) + VOffset,sensor [mV] or
VSensor,typ = TCSensor T [°C] + VSensor(TA = 0°C) [mV]
The typical equivalent impedance of the sensor is 51 kΩ. The sample time required includes the sensor-on time tSENSOR(on).
No additional current is needed. The VMID is used during sampling.
The on-time tVMID(on) is included in the sampling time tVMID(sample); no additional on time is needed.
Flash Memory
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST
CONDITIONS
VCC
MIN
TYP
MAX
UNIT
VCC(PGM/ERASE)
Program and erase supply voltage
2.2
3.6
V
fFTG
Flash timing generator frequency
257
476
kHz
IPGM
Supply current from VCC during program
2.2 V, 3.6 V
1
5
mA
IERASE
Supply current from VCC during erase
2.2 V, 3.6 V
1
7
mA
10
ms
(1)
tCPT
Cumulative program time
tCMErase
Cumulative mass erase time
2.2 V, 3.6 V
2.2 V, 3.6 V
20
104
Program/erase endurance
ms
105
tRetention
Data retention duration
TJ = 25°C
tWord
Word or byte program time
(2)
30
tFTG
tBlock,
Block program time for first byte or word
(2)
25
tFTG
Block program time for each additional byte or
word
(2)
18
tFTG
Block program end-sequence wait time
(2)
6
tFTG
Mass erase time
(2)
10593
tFTG
Segment erase time
(2)
4819
tFTG
0
tBlock, 1-63
tBlock,
End
tMass Erase
tSeg Erase
(1)
(2)
30
100
cycles
years
The cumulative program time must not be exceeded when writing to a 64-byte flash block. This parameter applies to all programming
methods: individual word/byte write and block write modes.
These values are hardwired into the Flash Controller's state machine (tFTG = 1/fFTG).
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
RAM
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
V(RAMh)
(1)
RAM retention supply voltage
TEST CONDITIONS
(1)
MIN
CPU halted
MAX
UNIT
1.6
V
This parameter defines the minimum supply voltage VCC when the data in RAM remains unchanged. No program execution should
happen during this supply voltage condition.
JTAG and Spy-Bi-Wire Interface
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
MAX
UNIT
fSBW
Spy-Bi-Wire input frequency
PARAMETER
2.2 V, 3 V
0
20
MHz
tSBW,Low
Spy-Bi-Wire low clock pulse length
2.2 V, 3 V
0.025
15
µs
tSBW,En
Spy-Bi-Wire enable time
(TEST high to acceptance of first clock edge (1))
2.2 V, 3 V
1
µs
tSBW,Ret
Spy-Bi-Wire return to normal operation time
2.2 V, 3 V
15
100
2.2 V
0
5
MHz
10
MHz
90
kΩ
fTCK
TCK input frequency (2)
RInternal
Internal pulldown resistance on TEST
(1)
(2)
TEST CONDITIONS
VCC
MIN
3V
0
2.2 V, 3 V
25
TYP
60
µs
Tools accessing the Spy-Bi-Wire interface need to wait for the maximum tSBW,En time after pulling the TEST/SBWCLK pin high before
applying the first SBWCLK clock edge.
fTCK may be restricted to meet the timing requirements of the module selected.
JTAG Fuse (1)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
VCC(FB)
Supply voltage during fuse-blow condition
VFB
Voltage level on TEST for fuse blow
IFB
Supply current into TEST during fuse blow
tFB
Time to blow fuse
(1)
TEST CONDITIONS
TA = 25°C
MIN
MAX
UNIT
2.5
6
V
7
V
100
mA
1
ms
Once the fuse is blown, no further access to the JTAG/Test, Spy-Bi-Wire, and emulation feature is possible, and JTAG is switched to
bypass mode.
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MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
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APPLICATION INFORMATION
Port P1 Pin Schematic: P1.0 to P1.3, Input/Output With Schmitt Trigger – MSP430G2x21
PxSEL.y
PxDIR.y
1
Direction
0: Input
1: Output
0
PxREN.y
PxSEL.y
PxOUT.y
0
From Timer
1
DVSS
0
DVCC
1
1
P1.0/TA0CLK/ACLK
P1.1/TA0.0
P1.2/TA0.1
P1.3
PxIN.y
To Module
PxIE.y
PxIRQ.y
EN
Q
Set
PxIFG.y
Interrupt
Edge
Select
PxSEL.y
PxIES.y
Table 13. Port P1 (P1.0 to P1.3) Pin Functions – MSP430G2x21
PIN NAME (P1.x)
x
P1.0/
TA0CLK/
0
FUNCTION
P1DIR.x
P1SEL.x
P1.0 (I/O)
I: 0; O: 1
0
TA0CLK
0
1
ACLK
ACLK
P1.1/
P1.1 (I/O)
TA0.0
1
TA0.CCI0A
TA0.0
P1.2/
TA0.1
P1.3
32
3
1
1
I: 0; O: 1
0
0
1
1
1
I: 0; O: 1
0
TA0.CCI1A
0
1
TA0.1
1
1
I: 0; O: 1
0
P1.2 (I/O)
2
CONTROL BITS/SIGNALS
P1.3 (I/O)
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MSP430G2x31
MSP430G2x21
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
Port P1 Pin Schematic: P1.4, Input/Output With Schmitt Trigger – MSP430G2x21
PxSEL.y
PxDIR.y
1
Direction
0: Input
1: Output
0
PxREN.y
PxSEL.y
PxOUT.y
DVSS
0
DVCC
1
1
0
From Module
1
P1.4/SMCLK/TCK
PxIN.y
To Module
PxIE.y
PxIRQ.y
EN
Q
Set
PxIFG.y
Interrupt
Edge
Select
PxSEL.y
PxIES.y
From JTAG
To JTAG
Table 14. Port P1 (P1.4) Pin Functions – MSP430G2x21
PIN NAME (P1.x)
x
P1.4/
SMCLK/
TCK
(1)
FUNCTION
P1DIR.x
P1SEL.x
JTAG Mode
I: 0; O: 1
0
0
SMCLK
1
1
0
TCK
X
X
1
P1.x (I/O)
4
CONTROL BITS / SIGNALS (1)
X = don't care
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MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
www.ti.com
Port P1 Pin Schematic: P1.5, Input/Output With Schmitt Trigger – MSP430G2x21
PxSEL.y
PxDIR.y
1
From USI
Direction
0: Input
1: Output
0
PxREN.y
PxSEL.y or
USIPE5
PxOUT.y
DVSS
0
DV CC
1
1
0
From USI
1
P1.5/TA0.0/SCLK/TMS
PxSEL.y
PxIN.y
To Module
PxIE.y
PxIRQ.y
EN
Q
Set
PxIFG.y
Interrupt
Edge
Select
PxSEL.y
PxIES.y
From JTAG
To JTAG
Table 15. Port P1 (P1.5) Pin Functions – MSP430G2x21
PIN NAME (P1.x)
x
FUNCTION
P1DIR.x
P1SEL.x
USIP.x
JTAG Mode
I: 0; O: 1
0
0
0
TA0.0
1
1
0
0
SCLK
X
X
1
0
TMS
X
X
0
1
P1.5/
P1.x (I/O)
TA0.0/
5
SCLK/
TMS
(1)
34
CONTROL BITS / SIGNALS (1)
X = don't care
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MSP430G2x31
MSP430G2x21
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
Port P1 Pin Schematic: P1.6, Input/Output With Schmitt Trigger – MSP430G2x21
PxSEL.y
PxDIR.y
1
Direction
0: Input
1: Output
0
PxREN.y
PxSEL.y or
USIPE6
PxOUT.y
DVSS
0
DV CC
1
1
0
From Module
1
P1.6/TA0.1/SDO/SCL/TDI
PxSEL.y
PxIN.y
To Module
PxIE.y
PxIRQ.y
EN
Q
Set
PxIFG.y
Interrupt
Edge
Select
PxSEL.y
PxIES.y
From JTAG
To JTAG
Table 16. Port P1 (P1.6) Pin Functions – MSP430G2x21
PIN NAME (P1.x)
x
FUNCTION
P1.6/
P1.x (I/O)
TA0.1/
TA0.1
6
CONTROL BITS / SIGNALS (1)
P1DIR.x
P1SEL.x
USIP.x
JTAG Mode
I: 0; O: 1
0
0
0
1
1
0
0
TA0.CCI1B
0
1
0
0
SDO/SCL/
SDO/SCL
X
X
1
0
TDI/TCLK
TDI/TCLK
X
X
0
1
(1)
X = don't care
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MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
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Port P1 Pin Schematic: P1.7, Input/Output With Schmitt Trigger – MSP430G2x21
USIPE7
PxDIR.y
From USI
1
Direction
0: Input
1: Output
0
PxREN.y
PxSEL.y or
USIPE7
PxOUT.y
DVSS
0
DVCC
1
1
0
From USI
1
P1.7/SDI/SDA/TDO/TDI
PxSEL.y
PxIN.y
To Module
PxIE.y
PxIRQ.y
EN
Q
Set
PxIFG.y
Interrupt
Edge
Select
PxSEL.y
PxIES.y
From JTAG
To JTAG
From JTAG
To JTAG
Table 17. Port P1 (P1.7) Pin Functions – MSP430G2x21
PIN NAME (P(1.x)
x
P1.7/
SDI/SDA/
TDO/TDI
(1)
36
7
FUNCTION
CONTROL BITS / SIGNALS (1)
P1DIR.x
P1SEL.x
USIP.x
JTAG Mode
P1.x (I/O)
I: 0; O: 1
0
0
0
SDI/SDA
X
X
1
0
TDO/TDI
X
X
0
1
X = don't care
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MSP430G2x21
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
Port P1 Pin Schematic: P1.0 to P1.2, Input/Output With Schmitt Trigger – MSP430G2x31
To ADC10
INCHx
ADC10AE0.y
PxSEL.y
PxDIR.y
1
Direction
0: Input
1: Output
0
PxREN.y
PxSEL.y
PxOUT.y
0
ACLK
1
DVSS
0
DVCC
1
1
P1.0/TA0CLK/ACLK/A0
P1.1/TA0.0/A1
P1.2/TA0.1/A2
Bus
Keeper
EN
PxIN.y
To Module
PxIE.y
PxIRQ.y
EN
Q
Set
PxIFG.y
Interrupt
Edge
Select
PxSEL.y
PxIES.y
Table 18. Port P1 (P1.0 to P1.2) Pin Functions – MSP430G2x31
CONTROL BITS / SIGNALS (1)
PIN NAME (P1.x)
x
FUNCTION
P1DIR.x
P1SEL.x
ADC10AE.x
(INCH.y = 1)
P1.0/
P1.x (I/O)
I: 0; O: 1
0
0
TA0CLK/
TA0.TACLK
0
1
0
ACLK
1
1
0
ACLK/
0
A0
A0
P1.1/
P1.x (I/O)
TA0.0/
TA0.0
1
X
X
1 (y = 0)
I: 0; O: 1
0
0
1
1
0
TA0.CCI0A
0
1
0
A1
A1
X
X
1 (y = 1)
P1.2/
P1.x (I/O)
I: 0; O: 1
0
0
TA0.1/
TA0.1
1
1
0
A2/
(1)
2
TA0.CCI1A
0
1
0
A2
X
X
1 (y = 2)
X = don't care
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37
MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
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Port P1 Pin Schematic: P1.3, Input/Output With Schmitt Trigger – MSP430G2x31
SREF2
VSS
0
To ADC10 VREF-
1
To ADC10
INCHx = y
ADC10AE0.y
PxSEL.y
PxDIR.y
1
Direction
0: Input
1: Output
0
PxREN.y
PxSEL.y
PxOUT.y
0
ADC10CLK
1
DVSS
0
DVCC
1
Bus
Keeper
EN
1
P1.3/ADC10CLK/A3/VREF-/VEREF-
PxIN.y
EN
To Module
D
PxIE.y
PxIRQ.y
EN
Q
Set
PxIFG.y
Interrupt
Edge
Select
PxSEL.y
PxIES.y
Table 19. Port P1 (P1.3) Pin Functions – MSP430G2x31
CONTROL BITS / SIGNALS (1)
PIN NAME (P1.x)
x
FUNCTION
P1DIR.x
P1SEL.x
ADC10AE.x
(INCH.x = 1)
0
P1.3/
P1.x (I/O)
I: 0; O: 1
0
ADC10CLK/
ADC10CLK
1
1
0
A3
X
X
1 (y = 3)
VREF-/
VREF-
X
X
1
VEREF-
VEREF-
X
X
1
A3/
(1)
38
3
X = don't care
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MSP430G2x21
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
Port P1 Pin Schematic: P1.4, Input/Output With Schmitt Trigger – MSP430G2x31
To ADC10 VREF+
To ADC10
INCHx = y
ADC10AE0.y
PxSEL.y
PxDIR.y
1
Direction
0: Input
1: Output
0
PxREN.y
PxSEL.y
PxOUT.y
0
SMCLK
1
DVSS
0
DV CC
1
Bus
Keeper
EN
1
P1.4/SMCLK/A4/VREF+/VEREF+/TCK
PxIN.y
To Module
PxIE.y
EN
PxIRQ.y
Q
Set
PxIFG.y
PxSEL.y
PxIES.y
Interrupt
Edge
Select
From JTAG
To JTAG
Copyright © 2010–2013, Texas Instruments Incorporated
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MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
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Table 20. Port P1 (P1.4) Pin Functions – MSP430G2x31
CONTROL BITS / SIGNALS (1)
PIN NAME (P1.x)
x
FUNCTION
P1DIR.x
P1SEL.x
ADC10AE.x
(INCH.x = 1)
JTAG
Mode
P1.4/
P1.x (I/O)
I: 0; O: 1
0
0
0
SMCLK/
SMCLK
1
1
0
0
A4/
A4
X
X
1 (y = 4)
0
4
VREF+/
VREF+
X
X
1
0
VEREF+/
VEREF+
X
X
1
0
TCK
TCK
X
X
0
1
(1)
X = don't care
Port P1 Pin Schematic: P1.5, Input/Output With Schmitt Trigger – MSP430G2x31
To ADC10
INCHx
ADC10AE0.y
PxDIR.y
PxSEL.y
1
Direction
0: Input
1: Output
0
PxREN.y
PxSEL.y
PxOUT.y
From Module
DVSS
0
DVCC
1
1
0
1
Bus
Keeper
EN
P1.5/TA0.0/A5/TMS
PxIN.y
To Module
PxIE.y
PxIRQ.y
EN
Q
Set
PxIFG.y
PxSEL.y
PxIES.y
Interrupt
Edge
Select
From JTAG
To JTAG
40
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MSP430G2x21
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
Table 21. Port P1 (P1.5) Pin Functions - MSP430G2x31
CONTROL BITS / SIGNALS (1)
PIN NAME (P1.x)
x
FUNCTION
P1DIR.x
P1SEL.x
USIP.x
ADC10AE.x
(INCH.x = 1)
JTAG
Mode
P1.5/
P1.x (I/O)
I: 0; O: 1
0
0
0
0
TA0.0/
TA0.0
1
1
0
0
0
A5
X
X
X
1 (y = 5)
0
SCLK/
SCLK
X
X
1
0
0
TMS
TMS
X
X
0
0
1
A5/
(1)
5
X = don't care
Port P1 Pin Schematic: P1.6, Input/Output With Schmitt Trigger – MSP430G2x31
To ADC10
INCHx
ADC10AE0.y
PxDIR.y
from USI
USIPE6
1
Direction
0: Input
1: Output
0
PxREN.y
PxSEL.y or
USIP E6
PxOUT.y
From USI
DVSS
0
DV CC
1
1
0
1
Bus
Keeper
EN
P1.6/TA0.1/SDO/SCL/A6/TDI
PxSEL.y
PxIN.y
To Module
PxIE.y
EN
PxIRQ.y
Q
Set
PxIFG.y
PxSEL.y
PxIES.y
Interrupt
Edge
Select
From JTAG
To JTAG
USI in I2C mode: Output driver drives low level only. Driver is disabled in JTAG mode.
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MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
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Table 22. Port P1 (P1.6) Pin Functions - MSP430G2x31
CONTROL BITS / SIGNALS (1)
PIN NAME (P1.x)
x
FUNCTION
P1DIR.x
P1SEL.x
USIP.x
ADC10AE.x
(INCH.x = 1)
JTAG
Mode
P1.6/
P1.x (I/O)
I: 0; O: 1
0
0
0
0
TA0.1/
TA0.1
1
1
0
0
0
TA0.CCR1B
0
1
0
0
0
6
A6/
A6
X
X
0
1 (y = 6)
0
SDO/
SDO
X
X
1
0
0
TDI/TCLK
TDI/TCLK
X
X
0
0
1
(1)
42
X = don't care
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MSP430G2x21
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SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
Port P1 Pin Schematic: P1.7, Input/Output With Schmitt Trigger – MSP430G2x31
To ADC10
INCHx
ADC10AE0.y
USIPE7
PxDIR.y
1
Direction
0: Input
1: Output
0
from USI
PxSEL.y
PxREN.y
PxSEL.y or
USIPE7
PxOUT.y
0
From USI
1
DVSS
0
DVCC
1
1
Bus
Keeper
EN
P1.7/SDI/SDA/A7/TDO/TDI
PxSEL.y
PxIN.y
To Module
PxIE.y
EN
PxIRQ.y
Q
Set
PxIFG.y
Interrupt
Edge
Select
PxSEL.y
PxIES.y
From JTAG
To JTAG
From JTAG
To JTAG
USI in I2C mode: Output driver drives low level only. Driver is disabled in JTAG mode.
Table 23. Port P1 (P1.7) Pin Functions – MSP430G2x31
CONTROL BITS / SIGNALS (1)
PIN NAME (P1.x)
x
FUNCTION
P1DIR.x
P1SEL.x
USIP.x
ADC10AE.x
(INCH.x = 1)
JTAG
Mode
P1.7/
P1.x (I/O)
I: 0; O: 1
0
0
0
0
A7/
A7
X
X
0
1 (y = 7)
0
SDI/SDO
X
X
1
0
0
TDO/TDI
X
X
0
0
1
SDI/SDO
TDO/TDI
(1)
7
X = don't care
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MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
www.ti.com
Port P2 Pin Schematic: P2.6, Input/Output With Schmitt Trigger – MSP430G2x21 and
MSP430G2x31
XOUT/P2.7
LF off
PxSEL.6
PxSEL.7
BCSCTL3.LFXT1Sx = 11
LFXT1CLK
0
1
PxSEL.6
PxDIR.y
1
0
Direction
0: Input
1: Output
PxREN.y
PxSEL.6
PxOUT.y
0
from Module
1
DV SS
0
DV CC
1
1
Bus
Keeper
EN
XIN/P2.6/TA0.1
PxIN.y
To Module
PxIE.y
PxIRQ.y
EN
Q
Set
PxIFG.y
PxSEL.y
PxIES.y
Interrupt
Edge
Select
Table 24. Port P2 (P2.6) Pin Functions – MSP430G2x21 and MSP430G2x31
PIN NAME (P2.x)
x
XIN
FUNCTION
XIN
P2.6
TA0.1
6
P2.x (I/O)
TA0.1 (2)
(1)
(2)
X = don't care
BCSCTL3.LFXT1Sx = 11 is required.
44
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CONTROL BITS / SIGNALS (1)
P2DIR.x
P2SEL.6
P2SEL.7
0
1
1
I: 0; O: 1
0
X
1
1
X
Copyright © 2010–2013, Texas Instruments Incorporated
MSP430G2x31
MSP430G2x21
www.ti.com
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
Port P2 Pin Schematic: P2.7, Input/Output With Schmitt Trigger – MSP430G2x21 and
MSP430G2x31
XIN/P2.6/TA0.1
LF off
PxSEL.6
PxSEL.7
BCSCTL3.LFXT1Sx = 11
LFXT1CLK
0
PxSEL.7
PxDIR.y
from P2.6/XIN
1
1
Direction
0: Input
1: Output
0
PxREN.y
PxSEL.7
PxOUT.y
0
from Module
1
DVSS
0
DV CC
1
1
Bus
Keeper
EN
XOUT/P2.7
PxIN.y
To Module
PxIE.y
PxIRQ.y
EN
Q
Set
PxIFG.y
Interrupt
Edge
Select
PxSEL.y
PxIES.y
Table 25. Port P2 (P2.7) Pin Functions – MSP430G2x21 and MSP430G2x31
PIN NAME (P2.x)
XOUT
P2.7
(1)
x
7
FUNCTION
XOUT
P2.x (I/O)
CONTROL BITS / SIGNALS (1)
P2DIR.x
P2SEL.6
P2SEL.7
1
1
1
I: 0; O: 1
X
0
X = don't care
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MSP430G2x31
MSP430G2x21
SLAS694J – FEBRUARY 2010 – REVISED FEBRUARY 2013
www.ti.com
REVISION HISTORY
REVISION
SLAS694
46
DESCRIPTION
Limited Product Preview release
SLAS694A
Updated Product Preview release.
Changes throughout for sampling.
SLAS694B
Updated Product Preview release
SLAS694C
Production Data release
SLAS694D
Updated Table 12, Table 15, Table 16, Table 17, Table 19, Table 20, Table 21, Table 24, Table 25.
Updated MSP430G2x31 port schematics: P1.0 to P1.3, P1.5, P1.6, P1.7.
SLAS694E
Updated Table 20, Table 21, Table 24.
Updated MSP430G2x31 port schematics: P1.3, P1.4.
SLAS694F
Corrected TA0.1 signal description in Table 2.
Added ADC10SA register to Table 11.
Added ADC10DTC1 and ADC10DTC0 registers to Table 12.
Corrected control bits in Table 13.
Corrected control bits in Table 25.
SLAS694G
Changed Tstg, Programmed device, to -40°C to 150°C in Absolute Maximum Ratings.
SLAS694H
Changed Tstg, Programmed device, to -55°C to 150°C in Absolute Maximum Ratings.
Changed fSYSTEM MAX at VCC = 1.8 V from 4.15 to 6 MHz in Recommended Operating Conditions.
SLAS694I
Corrected all port schematics (added buffer after PxOUT.y mux) in APPLICATION INFORMATION
SLAS694J
Recommended Operating Conditions, Added test conditions for typical values.
POR, BOR, Added note (2).
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PACKAGE OPTION ADDENDUM
www.ti.com
4-Feb-2021
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
MSP430G2121IN14
ACTIVE
PDIP
N
14
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
MSP430G2121
MSP430G2121IPW14
ACTIVE
TSSOP
PW
14
90
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
G2121
MSP430G2121IPW14R
ACTIVE
TSSOP
PW
14
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
G2121
MSP430G2121IRSA16R
ACTIVE
QFN
RSA
16
3000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
M430G
2121
MSP430G2121IRSA16T
ACTIVE
QFN
RSA
16
250
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
M430G
2121
MSP430G2131IN14
ACTIVE
PDIP
N
14
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
MSP430G2131
MSP430G2131IPW14
ACTIVE
TSSOP
PW
14
90
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
G2131
MSP430G2131IPW14R
ACTIVE
TSSOP
PW
14
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
G2131
MSP430G2131IRSA16R
ACTIVE
QFN
RSA
16
3000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
M430G
2131
MSP430G2131IRSA16T
ACTIVE
QFN
RSA
16
250
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
M430G
2131
MSP430G2221IN14
ACTIVE
PDIP
N
14
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
MSP430G2221
MSP430G2221IPW14
ACTIVE
TSSOP
PW
14
90
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
G2221
MSP430G2221IPW14R
ACTIVE
TSSOP
PW
14
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
G2221
MSP430G2221IRSA16R
ACTIVE
QFN
RSA
16
3000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
M430G
2221
MSP430G2221IRSA16T
ACTIVE
QFN
RSA
16
250
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
M430G
2221
MSP430G2231IN14
ACTIVE
PDIP
N
14
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
MSP430G2231
MSP430G2231IPW14
ACTIVE
TSSOP
PW
14
90
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
G2231
MSP430G2231IPW14R
ACTIVE
TSSOP
PW
14
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
G2231
MSP430G2231IRSA16R
ACTIVE
QFN
RSA
16
3000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
M430G
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
Orderable Device
4-Feb-2021
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
2231
MSP430G2231IRSA16T
ACTIVE
QFN
RSA
16
250
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
M430G
2231
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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