1FEATURES

• Low Supply Voltage Range: 1.8 V to 3.6 V

• Ultra-Low Power Consumption

– Active Mode: 250 μA at 1 MHz, 2.2 V

– Standby Mode: 0.7 μA

– Off Mode (RAM Retention): 0.1 μA

• Ultra-Fast Wake-Up From Standby Mode in

Less Than 1 μs

• 16-Bit RISC Architecture, 62.5-ns Instruction

Cycle Time

• Basic Clock Module Configurations

– Internal Frequencies up to 16 MHz With

Four Calibrated Frequencies to ±1%

– 32-kHz Crystal

– High-Frequency Crystal up to 16 MHz

– Resonator

– External Digital Clock Source

• 16-Bit Timer_A With Three Capture/Compare

Registers

• On-Chip Comparator for Analog Signal

Compare Function or Slope Analog-to-Digital

(A/D) Conversion

• Brownout Detector

• Serial Onboard Programming, No External

Programming Voltage Needed, Programmable

Code Protection by Security Fuse

• Bootstrap Loader

• On Chip Emulation Module

• Family Members:

– MSP430F2101

– 1KB + 256B Flash Memory

– 128B RAM

– MSP430F2111

– 2KB + 256B Flash Memory

– 128B RAM

– MSP430F2121

– 4KB + 256B Flash Memory

– 256B RAM

– MSP430F2131

– 8KB + 256B Flash Memory

– 256B RAM

• Available in a 20-Pin Plastic Small-Outline

Wide Body (SOWB) Package, 20-Pin Plastic

Small-Outline Thin (TSSOP) Package, 20-Pin

TVSOP Package, and 24-Pin QFN Package

• For Complete Module Descriptions, See the

MSP430x2xx Family User’s Guide (SLAU144)

DESCRIPTION

The Texas Instruments MSP430 family of ultra-low-power microcontrollers consist of several devices featuring

different sets of peripherals targeted for various applications. The architecture, combined with five low-power

modes, is optimized to achieve extended battery life in portable measurement applications. The device features a

powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code

efficiency.The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less

than 1 μs.

The MSP430x21x1 series is an ultra-low-power mixed signal microcontroller with a built-in 16-bit timer, versatile

analog comparator, and sixteen I/O pins.

Typical applications include sensor systems that capture analog signals, convert themto digital values, and then

process the data for display or for transmission to a host system. Stand-alone RF sensor front end is another

area of application. The analog comparator provides slope A/D conversion capability.