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Texas Instruments MSP430x11x1 special function registers, interrupt enable 1 and, Wdtifg, Ofifg

Models: MSP430x11x1

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special function registers

MSP430x11x1

MIXED SIGNAL MICROCONTROLLER

SLAS241C ± SEPTEMBER 1999 ± REVISED JUNE 2000

special function registers

Most interrupt and module enable bits are collected into the lowest address space. Special function register bits that are not allocated to a functional purpose are not physically present in the device. Simple software access is provided with this arrangement.

interrupt enable 1 and 2

Address

0h

WDTIE:

OFIE:

NMIIE:

ACCVIE:

Address

01h

7	6	5	4	3	2	1	0
		ACCVIE	NMIIE			OFIE	WDTIE

		rw-0	rw-0			rw-0	rw-0

Watchdog timer enable signal

Oscillator fault enable signal

Nonmaskable interrupt enable signal

Access violation at flash memory

7	6	5	4	3	2	1	0

interrupt flag register 1 and 2

Address

02h

7	6	5	4	3	2	1	0
			NMIIFG			OFIFG	WDTIFG

			rw-0			rw-1	rw-0

WDTIFG:

Set on overflow or security key violation or

Reset on VCC power-on or reset condition at

RST/NMI-pin

OFIFG:

Flag set on oscillator fault

NMIIFG:

Set via

RST/NMI-pin

Address

7

6

5

4

3

2

1

0

03h

Legend

rw:

Bit can be read and written.

rw-0:

Bit can be read and written. It is reset by PUC

SFR bit is not present in device.

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Texas Instruments MSP430x11x1 special function registers, interrupt enable 1 and, interrupt flag register 1 and, Wdtifg

Contents

MIXED SIGNAL MICROCONTROLLER D Ultralow-Power ConsumptionD Five Power Saving Modes Standby Mode 0.8 ∝AMSP430x11x1 MIXED SIGNAL MICROCONTROLLER functional block diagramTerminal Functions short-form descriptionprocessing unit MIXED SIGNAL MICROCONTROLLERTable 2. Address Mode Descriptions short-form description continuedinstruction set Table 1. Instruction Word Formatslow-power consumption capabilities operation modes and interruptsinstruction set continued MSP430x11x1 MIXED SIGNAL MICROCONTROLLERstatus register R2 MSP430x11x1 MIXED SIGNAL MICROCONTROLLERinterrupt vector addresses MSP430x11x1 MIXED SIGNAL MICROCONTROLLERINTERRUPT SOURCE INTERRUPT FLAGinterrupt enable 1 and Reset on VCC power-on or reset condition atFlag set on oscillator fault special function registersboot ROM containing bootstrap loader functions of the bootstrap loadermemory organization MSP430x11x1 MIXED SIGNAL MICROCONTROLLERboot ROM containing bootstrap loader continued features of the bootstrap loader arehardware resources used for serial input/output MSP430x11x1 MIXED SIGNAL MICROCONTROLLERD There were less than two positive edges at TEST while RST/NMI is low MSP430x11x1 MIXED SIGNAL MICROCONTROLLERboot ROM containing bootstrap loader continued MSP430x11x1 MIXED SIGNAL MICROCONTROLLER flash memoryflash memory control register FCTL1 flash memory, timing generator, control register FCTL2 flash memory control register FCTL1 continuedErase 0128h, bit1, Erase a segmentFigure 1. Flash Memory Timing Generator Diagram flash memory, timing generator, control register FCTL2 continuedflash memory control register FCTL3 MSP430x11x1 MIXED SIGNAL MICROCONTROLLERflash memory control register FCTL3 continued MIXED SIGNAL MICROCONTROLLERMSP430x11x1 BUSYflash memory, interrupt and security key violation MSP430x11x1 MIXED SIGNAL MICROCONTROLLERflash memory control register FCTL3 continued LOCKFigure 2. Block Diagram of NMI Interrupt Sources MSP430x11x1 MIXED SIGNAL MICROCONTROLLERFlash Module IFG1.4MSP430x11x1 MIXED SIGNAL MICROCONTROLLER peripheralsoscillator and system clock Figure 3. Clock Signals oscillator and system clock continueddigital I/O MSP430x11x1 MIXED SIGNAL MICROCONTROLLERwatchdog timer TimerA Three capture/compare registersdigital I/O continued MSP430x11x1 MIXED SIGNAL MICROCONTROLLERTimerA 3 capture/compare registers continued Figure 4. TimerA, MSP430x11x1 ConfigurationUART MSP430x11x1 MIXED SIGNAL MICROCONTROLLERMSP430x11x1 MIXED SIGNAL MICROCONTROLLER Figure 5. Block Diagram of ComparatorAComparatorA MSP430x11x1 ComparatorA continuedMIXED SIGNAL MICROCONTROLLER slope a/d conversion MSP430x11x1 MIXED SIGNAL MICROCONTROLLERComparatorA continued The ComparatorA is well suited for use in single or multiple-slope conversions. The internal-reference levels may be used to set a reference during timing measurement of charge or discharge operations. They can also be used externally to bias analog circuitryperipheral file map MSP430x11x1 MIXED SIGNAL MICROCONTROLLERabsolute maximum ratings² recommended operating conditionsMSP430x11x1 MIXED SIGNAL MICROCONTROLLER Storage temperature, T stg unprogrammed devicerecommended operating conditions continued MSP430x11x1 DevicesFigure 6. Frequency vs Supply Voltage MSP430x11x1 MIXED SIGNAL MICROCONTROLLERcurrent consumption of active mode versus supply voltage, C version current consumption of active mode versus supply voltage, F versionsupply current into VCC excluding external current fsystem = 1 MHz MSP430x11x1 MIXED SIGNAL MICROCONTROLLERSchmitt-trigger inputs Port P1 to Port P2 P1.0 to P1.7, P2.0 to P2.5 outputs Port 1 to P2 P1.0 to P1.7, P2.0 to P2.5leakage current MSP430x11x1 MIXED SIGNAL MICROCONTROLLERinternal signals TAx, SMCLK at TimerA optional resistors, individually programmable with ROM code see Noteinputs Px.x, TAx MSP430x11x1 MIXED SIGNAL MICROCONTROLLERoutputs P1.x, P2.x, TAx ComparatorA see NoteMSP430x11x1 MIXED SIGNAL MICROCONTROLLER t res ponse HLMSP430x11x1 MIXED SIGNAL MICROCONTROLLER Figure 7. VRefVT vs Temperature, VCC = 3 V, C1121Figure 8. VRefVT vs Temperature, VCC = 2.2 V, C1121 Figure 9. Block Diagram of ComparatorA Module Figure 10. Overdrive Definition PUC/PORMSP430x11x1 MIXED SIGNAL MICROCONTROLLER τ ≈ 2.0 ∝ sMSP430x11x1 MIXED SIGNAL MICROCONTROLLER Figure 11. Power-On Reset POR vs Supply VoltageFigure 12. VPOR vs Temperature crystal oscillator,LFXT1 Figure 13. DCO Characteristics MSP430x11x1 MIXED SIGNAL MICROCONTROLLERfDCOx7 fDCOx0principle characteristics of the DCO wake-up from lower power modes LPMxJTAG/programming MSP430x11x1 MIXED SIGNAL MICROCONTROLLERMSP430x11x1 MIXED SIGNAL MICROCONTROLLER APPLICATION INFORMATION input/output schematicPort P1, P1.0 to P1.3, input/output with Schmitt-trigger APPLICATION INFORMATION MSP430x11x1 MIXED SIGNAL MICROCONTROLLERMSP430x11x1 Port P2, P2.0 to P2.2, input/output with Schmitt-triggerMIXED SIGNAL MICROCONTROLLER APPLICATION INFORMATIONPort P2, P2.3 to P2.4, input/output with Schmitt-trigger MSP430x11x1 MIXED SIGNAL MICROCONTROLLERAPPLICATION INFORMATION APPLICATION INFORMATIONMSP430x11x1 MIXED SIGNAL MICROCONTROLLER Port P2, unbonded bits P2.6 and P2.7 MSP430x11x1 MIXED SIGNAL MICROCONTROLLERJTAG fuse check mode APPLICATION INFORMATIONMECHANICAL DATA DW R-PDSO-GPLASTIC SMALL-OUTLINE PACKAGE MSP430x11x1 MIXED SIGNAL MICROCONTROLLERPW R-PDSO-G PLASTIC SMALL-OUTLINE PACKAGEMSP430x11x1 MIXED SIGNAL MICROCONTROLLER MECHANICAL DATAIMPORTANT NOTICE