Maxim Integrated │ 2

www.maximintegrated.com

Evaluates: MAX32660, MAX11615,

MAX40007, MAX9119,

MAX9634, MAX17222

MAXNANOPWRBD# Evaluation Kit

Figure 1. MAXNANOPWRBD# EV Block Diagram

Quick Start

The kit comes preprogrammed with multimeter example

firmware. Simply apply power to the board with a 1.5V

button cell battery or with an external 1.5V voltage source.

SW1 can be used to cycle through the three operational

modes: voltage measurement, current measurement, and

frequency measurement.

Voltage and frequency measurement is relative to the V

and COM terminals. Current measurement uses the A

and COM terminals.

Detailed Description

The MAXNANOPWRBD kit implements a simple bat-

tery-powered multimeter to demonstrate several low

power Maxim analog and digital technologies. Application

functionality is provided by firmware that runs on the

MAX32660 Arm Cortex-M4 processor with FPU. The

analog front-end is implemented with nanopower com-

parators and operational amplifiers that present measure-

ment signals to the MAX11615 12-bit ADC. The ADC is

The 128x128 pixel LCD is connected to the MCU through

a SPI bus and two buttons are provided to complete the

multimeter user interface.

The example firmware provided with the kit enables

voltage, current, and frequency measurements through

the V, A, and COM terminals. Limit voltage measure-

ments to ±10V and current measurements to ±100mA.

Kit design does not provide protection and safety circuitry

required by commercial multimeter designs. Therefore,

the kit should not be connected to high-voltage sources.

Exceeding the specified input ranges will damage the

PCB and the components.

The kit can be powered by a single LR44, or similar,

1.5V button cell. The board can optionally be powered

externally by a benchtop supply through J2. Maximum

input voltage applied to J2 should be limited to 1.5V.

SW4 specifies between external power (EXT) and battery

power (BAT).

The kit features two connectors for external interfacing. J7

provides a JTAG SWD interface that can be used with the

included MAX32635PICO debugger module to program

and debug the MAX32660 Arm Cortex M4 processor with

the MCU and the ADC. This interface is compatible with

Sparkfun’s QWIIC system.

Power conversion is provided by the MAX17222, which

converts the 1.5V nominal battery voltage to 3.3V for use

by the rest of the board.

Firmware

A source code package for the kit can be obtained from

Maxim website. Simply use the search tool on Maxim’s

website and search for “MAXNANOPWRBD”. The pack-

age is found on the

Design Resources tab.

Information about the source code and how to build,

program, and debug it can be found in the source code

package.

#Denotes RoHS compliance.

PART

TYPE

MAXNANOPWRBD#

Evaluation Kit

MAX32660

MCU

LCD

MAX11615

ADC

ANALOG FRONT END

MAX17222

BOOST CONVERTER

3V COIN CELL

3.3V

A

V

COM

Ordering Information