MSP430F241X_11 Datasheet, PDF(20/107 Page) Texas Instruments

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

MSP430F241X_11 Datasheet, PDF (20/107 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

◁

MSP430F241x, MSP430F261x

MIXED SIGNAL MICROCONTROLLER

SLAS541G -- JUNE 2007 -- REVISED MARCH 2011

calibration data stored in information memory segment A

Calibration data is stored for the DCO and for the ADC12. It is organized in a tag-length-value (TLV) structure.

NAME

TAG_DCO_30

TAG_ADC12_1

TAG_EMPTY

ADDRESS

0x10F6

0x10DA

TAGS USED BY THE TLV STRUCTURE

VALUE

DESCRIPTION

0x01

0x08

DCO frequency calibration at VCC = 3 V and TA = 25ï°C at calibration

ADC12_1 calibration tag

0xFE Identifier for empty memory areas

LABELS USED BY THE ADC CALIBRATION STRUCTURE

LABEL

CONDITION AT CALIBRATION / DESCRIPTION

CAL_ADC_25T85

CAL_ADC_25T30

CAL_ADC_25VREF_FACTOR

CAL_ADC_15T85

CAL_ADC_15T30

CAL_ADC_15VREF_FACTOR

CAL_ADC_OFFSET

CAL_ADC_GAIN_FACTOR

CAL_BC1_1MHZ

INCHx = 0x1010; REF2_5 = 1, TA = 85ï°C

INCHx = 0x1010; REF2_5 = 1, TA = 30ï°C

REF2_5 = 1, TA = 30ï°C

INCHx = 0x1010; REF2_5 = 0, TA = 85ï°C

INCHx = 0x1010; REF2_5 = 0, TA = 30ï°C

REF2_5 = 0, TA = 30ï°C

External VREF = 1.5 V, fADC12CLK = 5 MHz

CAL_DCO_1MHZ --

CAL_BC1_8MHZ --

CAL_DCO_8MHZ --

CAL_BC1_12MHZ --

CAL_DCO_12MHZ --

CAL_BC1_16MHZ --

CAL_DCO_16MHZ --

SIZE

word

byte

ADDRESS OFFSET

0x000E

0x000C

0x000A

0x0008

0x0006

0x0004

0x0002

0x0000

0x0007

0x0006

0x0005

0x0004

0x0003

0x0002

0x0001

0x0000

brownout, supply voltage supervisor (SVS)

The brownout circuit is implemented to provide the proper internal reset signal to the device during power on

and power off. The SVS circuitry detects if the supply voltage drops below a user selectable level and supports

both supply voltage supervision (the device is automatically reset) and supply voltage monitoring (SVM) (the

device is not automatically reset).

The CPU begins code execution after the brownout circuit releases the device reset. However, VCC may not

have ramped to VCC(min) at that time. The user must ensure that the default DCO settings are not changed until

VCC reaches VCC(min). If desired, the SVS circuit can be used to determine when VCC reaches VCC(min).

digital I/O

There are up to eight 8-bit I/O ports implementedâports P1 through P8:

D All individual I/O bits are independently programmable.

D Any combination of input, output, and interrupt conditions is possible.

D Edge-selectable interrupt input capability for all eight bits of ports P1 and P2.

D Read/write access to port-control registers is supported by all instructions.

D Each I/O has an individually programmable pullup/pulldown resistor.

D Ports P7/P8 can be accessed word-wise.

ï· POST OFFICE BOX 655303 DALLAS, TEXAS 75265

▷