MSC1202Y2RHHT datasheet(10/92 Pages) TI1

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MSC1200

MSC1201

MSC1202

SBAS317E − APRIL 2004 − REVISED MAY 2006

www.ti.com

PIN ASSIGNMENTS

NAME

MSC1200

PIN #

MSC1201/1202

PIN #

DESCRIPTION

1, 6, 7, 8, 16,

25, 47

No Connection. Leave unconnected.

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.

XIN must not be left floating.

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.

DGND

4, 33, 34, 48

3, 26

Digital Ground

RST

Holding the reset input high for two tOSC periods will reset the device.

AVDD

Analog Power Supply

AGND

10, 11

7, 8

Analog Ground

AINCOM

Analog Input (can be analog common for single-ended inputs or analog input for differential inputs)

IDAC

IDAC Output

REFOUT/REF IN+

Internal Voltage Reference Output/Voltage Reference Positive Input (required CREF = 0.1µF)

REF IN−

Voltage Reference Negative Input (tie to AGND for internal voltage reference)

AIN7

—

Analog Input Channel 7

AIN6

—

Analog Input Channel 6

AIN5

Analog Input Channel 5

AIN4

Analog Input Channel 4

AIN3

Analog Input Channel 3

AIN2

Analog Input Channel 2

AIN1

Analog Input Channel 1

AIN0

Analog Input Channel 0

P1.0−P1.7

26−32, 37

19−25, 28

Port 1 is a bidirectional I/O port (refer to P1DDRL, SFR AEh, and P1DDRH, SFR AFh, for port pin

configuration control).

The alternate functions for Port 1 are listed below.

Port

Alternate Name(s)

Alternate Use

P1.0

PROG

Serial programming mode (must be DGND on reset)

P1.1

N/A

P1.2

DOUT

Serial data out

P1.3

DIN

Serial data in

P1.4

INT2/SS

External interrupt 2 / Slave Select

P1.5

INT3

External interrupt 3

P1.6

INT4

External interrupt 4

P1.7

INT5

External interrupt 5

DVDD

35, 36, 46

Digital Power Supply

P3.0−P3.7

38−45

29−36

Port 3 is a bidirectional I/O port (refer to P3DDRL, SFR B3h, and P3DDRH, SFR B4h, for port pin

configuration control).

The alternate functions for Port 3 are listed below.

Port

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

External interrupt 1

P3.4

Timer 0 external input

P3.5

Timer 1 external input

P3.6

SCK/SCL/CLKS

SCK / SCL / various clocks (refer to PASEL, SFR F2h)

P3.7

N/A

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