UCD3138 datasheet(2/68 Pages) TI1

2 / 68 page

UCD3138

www.ti.com

SLUSAP2 A – MARCH 2012 – REVISED MARCH 2012

Contents

Introduction

........................................................................................................................ 6

1.1

Features

...................................................................................................................... 6

1.2

Applications

.................................................................................................................. 7

Overview

............................................................................................................................ 7

2.1

Description

................................................................................................................... 7

2.2

Ordering Information

........................................................................................................ 8

2.3

Product Selection Matrix

................................................................................................... 8

2.4

Functional Block Diagram

.................................................................................................. 9

2.5

UCD3138 64 QFN – Pin Assignments

................................................................................. 10

2.6

Pin Functions

.............................................................................................................. 11

2.7

UCD3138 40 QFN – Pin Assignments

................................................................................. 13

2.8

Pin Functions

.............................................................................................................. 14

Electrical Specifications

..................................................................................................... 15

3.1

ABSOLUTE MAXIMUM RATINGS

...................................................................................... 15

3.2

THERMAL INFORMATION

.............................................................................................. 15

3.3

RECOMMENDED OPERATING CONDITIONS

....................................................................... 15

3.4

ELECTRICAL CHARACTERISTICS

.................................................................................... 15

3.5

PMBus/SMBus/I

2C Timing

............................................................................................... 19

3.6

Power On Reset (POR) / Brown Out Reset (BOR)

................................................................... 20

3.7

Typical Clock Gating Power Savings

................................................................................... 21

Functional Overview

.......................................................................................................... 22

4.1

ARM Processor

............................................................................................................ 22

4.2

Memory

..................................................................................................................... 22

4.2.1

CPU Memory Map and Interrupts

............................................................................ 22

4.2.1.1

Memory Map (After Reset Operation)

........................................................... 22

4.2.1.2

Memory Map (Normal Operation)

................................................................ 23

4.2.1.3

Memory Map (System and Peripherals Blocks)

................................................ 23

4.2.2

Boot ROM

....................................................................................................... 23

4.2.3

Customer Boot Program

....................................................................................... 24

4.2.4

Flash Management

............................................................................................. 24

4.3

System Module

............................................................................................................ 24

4.3.1

Address Decoder (DEC)

....................................................................................... 24

4.3.2

Memory Management Controller (MMC)

.................................................................... 24

4.3.3

System Management (SYS)

................................................................................... 24

4.3.4

Central Interrupt Module (CIM)

............................................................................... 25

4.4

Peripherals

................................................................................................................. 26

4.4.1

Fusion Digital Power Peripherals

............................................................................. 26

4.4.1.1

Front End

............................................................................................ 26

4.4.1.2

DPWM Module

..................................................................................... 27

4.4.1.3

DPWM Events

...................................................................................... 28

4.4.1.4

High Resolution PWM

............................................................................. 30

4.4.1.5

Over Sampling

...................................................................................... 30

4.4.1.6

DPWM Interrupt Generation

...................................................................... 30

4.4.1.7

DPWM Interrupt Scaling/Range

.................................................................. 30

4.5

DPWM Modes of Operation

.............................................................................................. 31

4.5.1

Normal Mode

.................................................................................................... 31

4.6

Phase Shifting

............................................................................................................. 33

4.7

DPWM Multiple Output Mode

............................................................................................ 34

4.8

DPWM Resonant Mode

.................................................................................................. 36

4.9

Triangular Mode

........................................................................................................... 37

4.10

Leading Edge Mode

....................................................................................................... 38

Contents

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