Lattice Semiconductor ICE40 UltraLite Manuale utente

iCE40 UltraLite™ Breakout Board User Guide

EB96 Version 1.1, March 2017

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iCE40 UltraLite Breakout Board

Introduction

Thank you for choosing the Lattice iCE40 UltraLite™ Breakout Board.

This guide describes how to begin using the iCE40 UltraLite Breakout Board, an easy-to-use platform for demon-

strating the high-current LED drive capabilities of the iCE40 UltraLite FPGA. Along with the evaluation board and

accessories, this kit includes the pre-loaded LED Driver Demo that demonstrates driving the RBG LEDs with a

PWM circuit. In addition, most of the device’s I/O balls are accessible via one of the several header locations on the

board, facilitating rapid prototyping of user functions.

The contents of this user’s guide include demo operation, top-level functional descriptions of the various portions of

the evaluation board, descriptions of the on-board connectors, jumpers, a complete set of schematics and the bill of

material for the iCE40 UltraLite Breakout Board.

Note: Static electricity can severely shorten the lifespan of electronic components. Be careful when handling the

iCE40 UltraLite Breakout Board as to not damage it from ESD.

Features

The iCE40 UltraLite Breakout Board includes:

•iCE40 UltraLite Breakout Board – The iCE40 UltraLite Breakout Board features the following on-board compo-

nents and circuits:

– iCE40 UltraLite (iCE40UL1K-CM36A) device in a 36-ball WLCSP package.

– Example of a board using this 0.35-pitch WLCSP package.

– High-current LED output

– Infrared transmit

– iCE40 UltraLite Current Measurements

– Standard USB cable for device programming

– RoHS-compliant packaging and process

•Pre-loaded Demo – The kit includes a pre-loaded demo to control the onboard RGB LED in conjunction with a

software run GUI.

•USB Connector Cable – A mini B USB port provides power, a programming interface and communication for the

software RGB LED GUI to the iCE40 UltraLite SPI port.

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iCE40 UltraLite Breakout Board

Figure 1 shows the top side of the iCE40 UltraLite Breakout Board indicating the specific features that are designed

on the board.

Figure 1. iCE40 UltraLite Breakout Board (Top Side)

iCE40 UltraLite Device

The board features an iCE40UL1K FPGA with a 1.2 V core supply. The device is packaged in a 36-ball WLCSP. For

a complete description of this device, see DS1050, iCE40 UltraLite Family Data Sheet.

Software Requirements

You should install the following software before you begin developing designs for the board:

• iCEcube2 2014.04 (or higher)

• Diamond Programmer 3.3 (or higher)

These software are available at the Lattice website Design Software & IP page. Make sure you log in to www.lat-

ticesemi.com, otherwise these software downloads will not be visible. It is also recommended to download the

RGB LED software GUI which interfaces with the iCE40 UltraLite Breakout Board. This GUI allows you to control

the RGB LED for color, brightness, blinking and breathing. Download the PC or MAC version of the GUI at

www.latticesemi.com.

iCE40UL1K-

CM36A (U1)

Barcode LED,

Red (D8) Power LED,

Green (D9)

FTDI USB to

UART/FIFO IC (U7)

Torch LED

(D7)

Infra-Red LED

(D6)

USB Mini-B

Socket (J17)

RGB LED

(U2)

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iCE40 UltraLite Breakout Board

Demonstration Design Jumpers

Lattice provides the RGB LED Driver Demo design programmed in the board. The RGB LED Driver Demo used in

conjunction with the software GUI illustrates the use of a PWM driver controlling the LEDs on the board. Below is a

description of the control jumpers for each LED.

• The RGB LED (U2) will transition colors

– J3 can be used to probe RGB LED (Default shunted). If you remove J3, the RGB LED will not light up.

• The IR LED (D6) is controlled when a jumper is placed across J4 pins 1-2

• The HP Torch LED (D7) is controlled when a jumper is placed across J4 pins 2-3

• The BARCODE LED (D8) is under FPGA control when a jumper is placed across J5 pins 2-3

– The IRLED FPGA output is 400 mA. This can be combined with 100 mA BARCODE FPGA output for a total

of 500 mA of drive current. This is performed when a jumper is placed across J5 pins 1-2. 

Note: This capability is not supported in the Demonstration Design

Figure 2 shows the default jumper locations.

Figure 2. Default Jumper Locations

J16– Enable

12 MHz clock

J4–Selects

HP LED device

(IR or Torch)

J2– Enable

DONE LED

J15– Program

SPI Flash or

iCE40UL

–RGB

Shunts

J5– Selects

Barcode output

(HP LED or D8)

J14–Isolate

SPI Flash

CSn

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iCE40 UltraLite Breakout Board

Clock Sources

The board has a single 12 MHz clock source. The 12 MHz clock drives both the FTDI USB interface device, and the

iCE40UL1K device. The iCE40UL1K device can be disconnected from the 12 MHz oscillator using J16. This is nec-

essary, for example, when iCE40 Ultra Lite device ball D2 is mistakenly programmed as an output and prevents the

FTDI USB interface from operating.

Board Power

The board provides the following power features:

•BoardPower

– Board power is derived from the USB connection.

– D9 Green LED indicates Board Power

• iCE40 UltraLite VCC

– Onboard 1.2 V supply

– ICC can be measured across the series resistor R4 (1 Ohm) at test points +1.2 V and VCC

• iCE40 UltraLite VCCIO

– Onboard 3.3 V supply

– ICC0 can be measured across the series resistor R2 (1Ohm) at test points TP4 and VCCIO0

– ICC1 can be measured across the series resistor R3 (1Ohm) at test points TP9 and VCCIO1

– ICC2 can be measured across the series resistor R5 (1Ohm) at test points TP6 and VCCIO2

Board Configuration and Programming

The board allows for programming of the iCE40 UltraLite or the SPI Flash:

• SPI Flash Programming J15 shunt pins 1-3 and 2-4 (Default shunted)

– U5 Micron Technology Inc part number N25Q032A13ESC40F

• iCE40 Ultra Configuration or Programming J15 shunt pins 1-2 and 3-4

– U1 iCE40UL1K-CM36A

• CRESETB can be asserted by pushing SW1

– Can be probed with J1

•DONELEDD2

– Can be probed with J2 (default shunted)

Details of the iCE40 UltraLite Board for use in programming are shown in Figure 3.

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iCE40 UltraLite Breakout Board

Figure 3. Configuration and Programming Details

CRESETB

Push-Button

U5-Micron

N25Q032A13ESC40F

iCE40UL1K-

CM36A (U1)

USB Mini-B

Socket (J17)

J15–Program

SPI Flash or

iCE40UL

J14–Isolate

SPI Flash

CSn

J1– CRESETB

Probe

D2–DONE

LED (Green)

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iCE40 UltraLite Breakout Board

Headers and Test Connections

The board features a number of headers and test connections which provide access to the iCE40 Ultra-Lite I/Os,

as shown in Figure 4, Figure 5 and Figure 6 below:

Figure 4. J6 Header ‘A’ Breakouts

Figure 5. J7 Header ‘B’ Breakouts

20 19

GND GND

A2 (RGB0) F5 (CSN)

GND GND

B1 (RGB1) E6 (SCK)

GND F6 (SO)

A1 (RBG2) E5 (SI)

HP3.3 V GND

A6 (IRLED) nc

A5 (BARCODE) nc

+3.3 V nc

Header 'A'

Header 'B'

20 19

GND GND

D6 C6

GND F3

C2 F2

A3 E2

B2 C1

B6 D1

A4 E1

B5 F1

+3.3 V +3.3 V

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iCE40 UltraLite Breakout Board

Figure 6. J9 Aardvark and J8 PMOD Connector

nc GND

nc nc

FLASH_MISO nc

ICE_SCK FLASH_MOSI

ICE_CSN GND

910

12 11

+3.3 V +3.3 V

GND GND

B2 C1

B6 D1

A4 E1

B5 F1

Aardvark

PMOD

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iCE40 UltraLite Breakout Board

RGB LED Demonstration Design and Software GUI

The iCE40 UltraLite Breakout Board can demonstrate a complete controller for an RGB LED. These are the steps

necessary to run the demonstration.

1. Ensure that the RGB LED GUI is installed.

2. Make sure the jumpers on J15 are both in the horizontal position. This is the default pins 1-3 and 2-4 shorted

together.

Figure 7. SPI Flash Selection (Horizontal) for J15

3. Connect the iCE40 UltraLite breakout board via the USB cable to a PC or MAC.

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iCE40 UltraLite Breakout Board

4. After the iCE40 UltraLite device has initialized and the RGB LED is illuminated RED, change the J15 jumper

positions to vertical, shorting pins 1-2 and 3-4. This is required to allow the USB port to communicate with the

iCE40 UltraLite device.

Figure 8. iCE Selection (Vertical) for J15

5. Start the RGB GUI on the PC or MAC.

Figure 9. iCE40 UltraLite LED Demonstration Interface

Now you can control the RGB LED on the iCE40 UltraLite Breakout Board. You can set the color, brightness, blink-

ing rate as well as breathing.

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