1FEATURES

2• Low Supply Voltage Range:

3.6 V Down to 1.8 V

• Ultralow Power Consumption

– Active Mode (AM):

All System Clocks Active

230 μA/MHz at 8 MHz, 3.0 V, Flash Program

Execution (Typical)

110 μA/MHz at 8 MHz, 3.0 V, RAM Program

Execution (Typical)

– Standby Mode (LPM3):

Real-Time Clock With Crystal, Watchdog,

and Supply Supervisor Operational, Full

RAM Retention, Fast Wake-Up:

1.7 μA at 2.2 V, 2.1 μA at 3.0 V (Typical)

Low-Power Oscillator (VLO), General-

Purpose Counter, Watchdog, and Supply

Supervisor Operational, Full RAM

Retention, Fast Wake-Up:

1.2 μA at 3.0 V (Typical)

– Off Mode (LPM4):

Full RAM Retention, Supply Supervisor

Operational, Fast Wake-Up:

1.2 μA at 3.0 V (Typical)

– Shutdown Mode (LPM4.5):

0.1 μA at 3.0 V (Typical)

• Wake-Up From Standby Mode in 3.5 μs

(Typical)

• 16-Bit RISC Architecture

– Extended Memory

– Up to 25-MHz System Clock

• Flexible Power Management System

– Fully Integrated LDO With Programmable

Regulated Core Supply Voltage

– Supply Voltage Supervision, Monitoring,

and Brownout

• Unified Clock System

– FLL Control Loop for Frequency

Stabilization

– Low-Power/Low-Frequency Internal Clock

Source (VLO)

– Low-Frequency Trimmed Internal Reference

Source (REFO)

– 32-kHz Crystals

– High-Frequency Crystals up to 32 MHz (1)

• 16-Bit Timer TA0, Timer_A With Five

Capture/Compare Registers

• 16-Bit Timer TA1, Timer_A With Three

Capture/Compare Registers

• 16-Bit Timer TB0, Timer_B With Seven

Capture/Compare Shadow Registers

• Up to Four Universal Serial Communication

Interfaces

– USCI_A0, USCI_A1, USCI_A2, and USCI_A3

Each Supporting

– Enhanced UART supporting Auto-

Baudrate Detection

– IrDA Encoder and Decoder

– Synchronous SPI

– USCI_B0, USCI_B1, USCI_B2, and USCI_B3

Each Supporting

– I2CTM

– Synchronous SPI

• 12-Bit Analog-to-Digital (A/D) Converter

– Internal Reference

– Sample-and-Hold

– Autoscan Feature

– 14 External Channels, 2 Internal Channels

• Hardware Multiplier Supporting 32-Bit

Operations

• Serial Onboard Programming, No External

Programming Voltage Needed

• Three Channel Internal DMA

• Basic Timer With Real-Time Clock Feature

• For Complete Module Descriptions, See the

MSP430x5xx and MSP430x6xx Family User's

Guide (SLAU208)

• Wide Operational Range: -40°C to 125°C (Q

Temp), -55°C to 125°C (M Temp) (Some Noted

Parameters Specified for –40°C to 85°C Only)

SUPPORTS DEFENSE, AEROSPACE,

AND MEDICAL APPLICATIONS

• Controlled Baseline

• One Assembly and Test Site

• One Fabrication Site

• Available in Extended (–55°C to 125°C)

Temperature Range

• Extended Product Life Cycle

• Extended Product-Change Notification

• Product Traceability

DESCRIPTION

The MSP430F5438A-EP is an ultralow-power microcontroller. The architecture, combined with extensive lowpower

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

3.5 μs (typical).

The MSP430F5438A-EP is a microcontroller configuration with three 16-bit timers, a high performance 12-bit

analog-to-digital (A/D) converter, up to four universal serial communication interfaces (USCI), hardware multiplier,

DMA, real-time clock module with alarm capabilities, and up to 87 I/O pins.

Typical applications for this device include analog and digital sensor systems, digital motor control, remote

controls, thermostats, digital timers, and hand-held meters.