MSP430x11x

MIXED SIGNAL MICROCONTROLLERS

SLAS196D− DECEMBER 1998 − REVISED SEPTEMBER 2004

8

POST OFFICE BOX 655303

memory organization

Int. Vector

2 KB ROM

128B RAM

16b Per.

8b Per.

SFR

FFFFh

FFE0h

FFDFh

F800h

027Fh

0200h

01FFh

0100h

00FFh

0010h

000Fh

0000h

MSP430C111

Int. Vector

4 KB

EPROM

256B RAM

16b Per.

8b Per.

SFR

FFFFh

FFE0h

FFDFh

02FFh

0200h

01FFh

0100h

00FFh

0010h

000Fh

0000h

MSP430P112

PMS430E112

Int. Vector

4 KB ROM

256B RAM

16b Per.

8b Per.

SFR

FFFFh

FFE0h

FFDFh

F000h

02FFh

0200h

01FFh

0100h

00FFh

0010h

000Fh

0000h

MSP430C112

F000h

peripherals

Peripherals are connected to the CPU through data, address, and control busses and can be handled using

all instructions. For complete module descriptions, refer to the MSP430x1xx Family User’s Guide, literature

number SLAU049.

oscillator and system clock

The clock system is supported by the basic clock module that includes support for a 32768-Hz watch crystal

oscillator, an internal digitally-controlled oscillator (DCO) and a high frequency crystal oscillator. The basic clock

module is designed to meet the requirements of both low system cost and low-power consumption. The internal

DCO provides a fast turn-on clock source and stabilizes in less than 6

µs. The basic clock module provides the

following clock signals:

digital I/O

There are two 8-bit I/O ports implemented—ports P1 and P2 (only six P2 I/O signals are available on external

pins):

NOTE:

Six bits of Port P2, P2.0 to P2.5, are available on external pins − but all control and data bits for Port

P2 are implemented.