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Texas Instruments MSP430x11x1 warranty Block Diagram of ComparatorA

Models: MSP430x11x1

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MSP430x11x1

MIXED SIGNAL MICROCONTROLLER

SLAS241C ± SEPTEMBER 1999 ± REVISED JUNE 2000

Comparator_A

The primary function of the comparator module is to support precision A/D slope conversion applications, battery voltage supervision, and observation of external analog signals. The comparator is connected to port pins P2.3/CA0 and to P2.4/CA1. It is controlled via twelve control bits in registers CACTL1 and CACTL2.

P2CA0

0	CA0

P2.3/ 1

CA0/

TA1

0 CA1

P2.4/ 1

CA1/

TA2

P2CA1

CARSEL

0 VCAREF

	0 V	VCC
	0	1			CAF
	CAEX	CAON
		CAON
0					Low Pass Filter
					Low Pass Filter
1				0	0
	+			0	0
	+
0	_			1	1
				1	1

1	0 V
			0 V	VCC	0 V
			0	1	τ ≈ 2.0 ∝s
					τ ≈ 2.0 ∝s
				CAON
		3	2	1	0
					CAREF

0	0.5 x VCC
	0.5 x VCC
2
1	0.25 x VCC
	0.25 x VCC
3

CCI1B

CAOUT

Set CAIFG

Flag

P2.2/

CAOUT/TA0

0 V

Figure 5. Block Diagram of Comparator_A

22	POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

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Texas Instruments warranty Block Diagram of ComparatorA, MSP430x11x1 MIXED SIGNAL MICROCONTROLLER

Contents

D Five Power Saving Modes MIXED SIGNAL MICROCONTROLLERD Ultralow-Power Consumption D Basic Clock Module ConfigurationsMSP430x11x1 MIXED SIGNAL MICROCONTROLLER functional block diagramprocessing unit Terminal Functionsshort-form description MIXED SIGNAL MICROCONTROLLERTable 1. Instruction Word Formats short-form description continuedinstruction set Table 2. Address Mode Descriptionsinstruction set continued low-power consumption capabilitiesoperation modes and interrupts MSP430x11x1 MIXED SIGNAL MICROCONTROLLERstatus register R2 MSP430x11x1 MIXED SIGNAL MICROCONTROLLERINTERRUPT SOURCE interrupt vector addressesMSP430x11x1 MIXED SIGNAL MICROCONTROLLER INTERRUPT FLAGFlag set on oscillator fault interrupt enable 1 andReset on VCC power-on or reset condition at special function registersmemory organization boot ROM containing bootstrap loaderfunctions of the bootstrap loader MSP430x11x1 MIXED SIGNAL MICROCONTROLLERhardware resources used for serial input/output boot ROM containing bootstrap loader continuedfeatures of the bootstrap loader are MSP430x11x1 MIXED SIGNAL MICROCONTROLLERboot ROM containing bootstrap loader continued MSP430x11x1 MIXED SIGNAL MICROCONTROLLERD There were less than two positive edges at TEST while RST/NMI is low flash memory control register FCTL1 flash memoryMSP430x11x1 MIXED SIGNAL MICROCONTROLLER Erase flash memory, timing generator, control register FCTL2flash memory control register FCTL1 continued 0128h, bit1, Erase a segmentflash memory control register FCTL3 Figure 1. Flash Memory Timing Generator Diagramflash memory, timing generator, control register FCTL2 continued MSP430x11x1 MIXED SIGNAL MICROCONTROLLERMSP430x11x1 flash memory control register FCTL3 continuedMIXED SIGNAL MICROCONTROLLER BUSYflash memory control register FCTL3 continued flash memory, interrupt and security key violationMSP430x11x1 MIXED SIGNAL MICROCONTROLLER LOCKFlash Module Figure 2. Block Diagram of NMI Interrupt SourcesMSP430x11x1 MIXED SIGNAL MICROCONTROLLER IFG1.4oscillator and system clock peripheralsMSP430x11x1 MIXED SIGNAL MICROCONTROLLER digital I/O Figure 3. Clock Signalsoscillator and system clock continued MSP430x11x1 MIXED SIGNAL MICROCONTROLLERdigital I/O continued watchdog timerTimerA Three capture/compare registers MSP430x11x1 MIXED SIGNAL MICROCONTROLLERUART TimerA 3 capture/compare registers continuedFigure 4. TimerA, MSP430x11x1 Configuration MSP430x11x1 MIXED SIGNAL MICROCONTROLLERComparatorA Figure 5. Block Diagram of ComparatorAMSP430x11x1 MIXED SIGNAL MICROCONTROLLER MIXED SIGNAL MICROCONTROLLER ComparatorA continuedMSP430x11x1 ComparatorA continued slope a/d conversionMSP430x11x1 MIXED SIGNAL MICROCONTROLLER 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 MICROCONTROLLERMSP430x11x1 MIXED SIGNAL MICROCONTROLLER absolute maximum ratings²recommended operating conditions Voltage applied at V CC to V SS MSP430C11x1Figure 6. Frequency vs Supply Voltage recommended operating conditions continuedMSP430x11x1 Devices MSP430x11x1 MIXED SIGNAL MICROCONTROLLERcurrent consumption of active mode versus supply voltage, F version supply current into VCC excluding external current fsystem = 1 MHzcurrent consumption of active mode versus supply voltage, C version MSP430x11x1 MIXED SIGNAL MICROCONTROLLERleakage current Schmitt-trigger inputs Port P1 to Port P2 P1.0 to P1.7, P2.0 to P2.5outputs Port 1 to P2 P1.0 to P1.7, P2.0 to P2.5 MSP430x11x1 MIXED SIGNAL MICROCONTROLLERinputs Px.x, TAx internal signals TAx, SMCLK at TimerAoptional resistors, individually programmable with ROM code see Note MSP430x11x1 MIXED SIGNAL MICROCONTROLLERMSP430x11x1 MIXED SIGNAL MICROCONTROLLER outputs P1.x, P2.x, TAxComparatorA see Note t res ponse HLFigure 8. VRefVT vs Temperature, VCC = 2.2 V, C1121 Figure 7. VRefVT vs Temperature, VCC = 3 V, C1121MSP430x11x1 MIXED SIGNAL MICROCONTROLLER MSP430x11x1 MIXED SIGNAL MICROCONTROLLER Figure 9. Block Diagram of ComparatorA ModuleFigure 10. Overdrive Definition PUC/POR τ ≈ 2.0 ∝ sFigure 12. VPOR vs Temperature crystal oscillator,LFXT1 Figure 11. Power-On Reset POR vs Supply VoltageMSP430x11x1 MIXED SIGNAL MICROCONTROLLER fDCOx7 Figure 13. DCO CharacteristicsMSP430x11x1 MIXED SIGNAL MICROCONTROLLER fDCOx0JTAG/programming principle characteristics of the DCOwake-up from lower power modes LPMx MSP430x11x1 MIXED SIGNAL MICROCONTROLLERPort P1, P1.0 to P1.3, input/output with Schmitt-trigger APPLICATION INFORMATION input/output schematicMSP430x11x1 MIXED SIGNAL MICROCONTROLLER APPLICATION INFORMATION MSP430x11x1 MIXED SIGNAL MICROCONTROLLERMIXED SIGNAL MICROCONTROLLER MSP430x11x1Port P2, P2.0 to P2.2, input/output with Schmitt-trigger APPLICATION INFORMATIONAPPLICATION INFORMATION Port P2, P2.3 to P2.4, input/output with Schmitt-triggerMSP430x11x1 MIXED SIGNAL MICROCONTROLLER APPLICATION INFORMATIONMSP430x11x1 MIXED SIGNAL MICROCONTROLLER JTAG fuse check mode Port P2, unbonded bits P2.6 and P2.7MSP430x11x1 MIXED SIGNAL MICROCONTROLLER APPLICATION INFORMATIONPLASTIC SMALL-OUTLINE PACKAGE MECHANICAL DATADW R-PDSO-G MSP430x11x1 MIXED SIGNAL MICROCONTROLLERMSP430x11x1 MIXED SIGNAL MICROCONTROLLER PW R-PDSO-GPLASTIC SMALL-OUTLINE PACKAGE MECHANICAL DATAIMPORTANT NOTICE