MSC1210 datasheet(13/83 Pages) TI

13 / 83 page

MSC1210

SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004

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PIN DESCRIPTIONS

PIN #

NAME

DESCRIPTION

XOUT

The crystal oscillator pin XOUT supports parallel resonant AT cut fundamental frequency crystals and ceramic

resonators. XOUT serves as the output of the crystal amplifier.

XIN

The crystal oscillator pin XIN supports parallel resonant AT cut fundamental frequency crystals and ceramic

resonators. XIN can also be an input if there is an external clock source instead of a crystal.

3−10

P3.0–P3.7

Port 3 is a bidirectional I/O port. The alternate functions for Port 3 are listed below.

3−10

P3.0–P3.7

PORT 3.x

Alternate Name(s)

Alternate Use

P3.0

RxD0

Serial port 0 input

P3.1

TxD0

Serial port 0 output

P3.2

INT0

External interrupt 0

P3.3

INT1/TONE/PWM

External interrupt 1/TONE/PWM output

P3.4

Timer 0 external input

P3.5

Timer 1 external input

P3.6

External data memory write strobe

P3.7

External data memory read strobe

11, 14, 15, 42, 58

DVDD

Digital power supply

12, 41, 57

DGND

Digital ground

RST

A HIGH on the reset input for two tOSC periods resets the device.

16, 32, 33

No connection

17, 27

AGND

Analog ground

AIN0

Analog input channel 0

AIN1

Analog input channel 1

AIN2

Analog input channel 2

AIN3

Analog input channel 3

AIN4

Analog input channel 4

AIN5

Analog input channel 5

AIN6, EXTD

Analog input channel 6, digital low-voltage detect input, generates DLVD interrupt

AIN7, EXTA

Analog input channel 7, analog low-voltage detect input, generates ALVD interrupt

AINCOM

Analog common for single-ended inputs or analog input for differential inputs

AVDD

Analog power supply. AVDD must rise above 2.0V to disable Analog Brownout Reset function.

REF IN–

Voltage reference negative input (must be tied to AGND for internal VREF)

REF IN+

Voltage reference positive input

REF OUT

Voltage reference output (tie to REF IN+ for internal VREF use)

34−40, 43

P2.0−P2.7

Port 2 is a bidirectional I/O port. The alternate functions for Port 2 are listed below. Refer to P2DDR, SFR B1h−B2h.

34−40, 43

P2.0−P2.7

PORT 2.x

Alternate Name

Alternate Use

P2.0

Address bit 8

P2.1

Address bit 9

P2.2

A10

Address bit 10

P2.3

A11

Address bit 11

P2.4

A12

Address bit 12

P2.5

A13

Address bit 13

P2.6

A14

Address bit 14

P2.7

A15

Address bit 15

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