Datasheet
Table Of Contents
- features
- description
- AVAILABLE OPTIONS
- DEVELOPMENT TOOL SUPPORT
- pin designation, MSP430xG461xIPZ
- pin designation, MSP430xG461xIZQW (top view)
- functional block diagram
- Terminal Functions
- short-form description
- CPU
- instruction set
- operating modes
- interrupt vector addresses
- special function registers (SFRs)
- memory organization
- bootstrap loader (BSL)
- flash memory
- peripherals
- DMA controller
- oscillator and system clock
- brownout, supply voltage supervisor
- brownout, supply voltage supervisor
- digital I/O
- Basic Timer1 and Real-Time Clock
- LCD_A drive with regulated charge pump
- watchdog timer (WDT+)
- universal serial communication interface (USCI)
- USART1
- hardware multiplier
- Timer_A3
- Timer_B7
- Comparator_A
- ADC12
- DAC12
- OA
- peripheral file map
- absolute maximum ratings over operating free-air temperature
- recommended operating conditions
- electrical characteristics
- supply current into AVCC + DVCC excluding external current
- supply current into AVCC + DVCC excluding external current
- Schmitt-trigger inputs -- Ports P1 to P10, RST/NMI, JTAG (TCK, TMS, TDI/TCLK, TDO/TDI)
- inputs Px.x, TAx, TBx
- leakage current -- Ports P1 to P10
- outputs -- Ports P1 to P10
- output frequency
- wake-up LPM3
- RAM
- LCD_A
- Comparator_A
- POR/brownout reset (BOR)
- SVS (supply voltage supervisor/monitor)
- DCO
- crystal oscillator, LFXT1 oscillator
- crystal oscillator, LFXT1 oscillator
- crystal oscillator, XT2 oscillator
- USCI (UART mode)
- USCI (SPI master mode)
- USCI (SPI slave mode)
- USCI (I2C mode)
- USART1
- 12-bit ADC, power supply and input range conditions
- 12-bit ADC, power supply and input range conditions
- 12-bit ADC, external reference
- 12-bit ADC, built-in reference
- 12-bit ADC, timing parameters
- 12-bit ADC, linearity parameters
- 12-bit ADC, temperature sensor and built-in VMID
- 12-bit DAC, supply specifications
- 12-bit DAC, linearity specifications
- 12-bit DAC, output specifications
- 12-bit DAC, reference input specifications
- 12-bit DAC, dynamic specifications; Vref = VCC, DAC12IR = 1
- operational amplifier OA, supply specifications
- operational amplifier OA, input/output specifications
- operational amplifier OA, dynamic specifications
- operational amplifier OA feedback network, noninverting amplifier mode (OAFCx = 4)
- operational amplifier OA feedback network, inverting amplifier mode (OAFCx = 6)
- flash memory (MSP430FG461x devices only)
- JTAG interface
- JTAG fuse
- APPLICATION INFORMATION
- input/output schematics
- Port P1, P1.0 to P1.5, input/output with Schmitt trigger
- Port P1 (P1.0 to P1.5) pin functions
- Port P1, P1.6, P1.7, input/output with Schmitt trigger
- Port P1 (P1.6 and P1.7) pin functions
- port P2, P2.0 to P2.3, P2.6 to P2.7, input/output with Schmitt trigger
- Port P2 (P2.0, P2.1, P2.2, P2.3, P2.6 and P2.7) pin functions
- port P2, P2.4 to P2.5, input/output with Schmitt trigger
- Port P2 (P2.4 and P2.5) pin functions
- port P3, P3.0 to P3.3, input/output with Schmitt trigger
- Port P3 (P3.0 to P3.3) pin functions
- port P3, P3.4 to P3.7, input/output with Schmitt trigger
- Port P3 (P3.4 to P3.7) pin functions
- port P4, P4.0 to P4.1, input/output with Schmitt trigger
- Port P4 (P4.0 to P4.1) pin functions
- port P4, P4.2 to P4.7, input/output with Schmitt trigger
- Port P4 (P4.2 to P4.5) pin functions
- port P5, P5.0, input/output with Schmitt trigger
- Port P5 (P5.0) pin functions
- port P5, P5.1, input/output with Schmitt trigger
- Port P5 (P5.1) pin functions
- port P5, P5.2 to P5.4, input/output with Schmitt trigger
- Port P5 (P5.2 to P5.4) pin functions
- port P5, P5.5 to P5.7, input/output with Schmitt trigger
- Port P5 (P5.5 to P5.7) pin functions
- port P6, P6.0, P6.2, and P6.4, input/output with Schmitt trigger
- Port P6 (P6.0, P6.2, and P6.4) pin functions
- port P6, P6.1, P6.3, and P6.5 input/output with Schmitt trigger
- Port P6 (P6.1, P6.3, and P6.5) pin functions
- port P6, P6.6, input/output with Schmitt trigger
- Port P6 (P6.6) pin functions
- port P6, P6.7, input/output with Schmitt trigger
- Port P6 (P6.7) pin functions
- port P7, P7.0 to P7.3, input/output with Schmitt trigger
- Port P7 (P7.0 to P7.1) pin functions
- port P7, P7.4 to P7.7, input/output with Schmitt trigger
- Port P7 (P7.4 to P7.5) pin functions
- port P8, P8.0 to P8.7, input/output with Schmitt trigger
- Port P8 (P8.0 to P8.1) pin functions
- Port P8 (P8.6 to P8.7) pin functions
- port P9, P9.0 to P9.7, input/output with Schmitt trigger
- Port P9 (P9.0 to P9.1) pin functions
- port P10, P10.0 to P10.5, input/output with Schmitt trigger
- Port P10 (P10.0 to P10.1) pin functions
- port P10, P10.6, input/output with Schmitt trigger
- Port P10 (P10.6) pin functions
- port P10, P10.7, input/output with Schmitt trigger
- Port P10 (P10.7) pin functions
- VeREF+/DAC0
- JTAG pins TMS, TCK, TDI/TCLK, TDO/TDI, input/output with Schmitt trigger or output
- JTAG fuse check mode
- input/output schematics
- Data Sheet Revision History

MSP430xG461x
MIXED SIGNAL MICROCONTROLLER
SLAS508I − APRIL 2006 − REVISED MARCH 2011
101
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
JTAG fuse check mode
MSP430 devices that have the fuse on the TDI/TCLK terminal have a fuse check mode that tests the continuity
of the fuse the first time the JTAG port is accessed after a power-on reset (POR). When activated, a fuse check
current (I
(TF)
) of 1 mA at 3 V can flow from the TDI/TCLK pin to ground if the fuse is not burned. Care must be
taken to avoid accidentally activating the fuse check mode and increasing overall system power consumption.
Activation of the fuse check mode occurs with the first negative edge on the TMS pin after power up or if the
TMS is being held low during power up. The second positive edge on the TMS pin deactivates the fuse check
mode. After deactivation, the fuse check mode remains inactive until another POR occurs. After each POR the
fuse check mode has the potential to be activated.
The fuse check current only flows when the fuse check mode is active and the TMS pin is in a low state (see
Figure 37). Therefore, the additional current flow can be prevented by holding the TMS pin high (default
condition). The JTAG pins are terminated internally and therefore do not require external termination.
Time TMS Goes Low After POR
TMS
I
(TF)
I
TDI/TCLK
Figure 37. Fuse Check Mode Current