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Create a 1-Wire Master with Xilinx PicoBlaze

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Description

Introduction

This reference design (RD) describes a 1-Wire® Master with PicoBlaze™ 8-bit embedded microcontroller design implemented and tested on the Xilinx® Spartan®-6 LX9 MicroBoard by Avnet. This example design uses the DS28EA001-Wire digital thermometer with sequence detect and PIO on a peripheral module. This module uses the Pmod™ port standard developed by Digilent Inc.

System Design Block Diagram

The system shown in Figure 1 shows the high-level implementation of the design. The system requires:

  • PicoBlaze processor
  • 2 BRAMs (each 1024 x 18-bit)
  • RS-232 port (USB UART)
  • LEDs for alarms
  • 681Ω ±1% pullup resistor
  • Maxim Integrated DS28EA00 peripheral module (DS28EA00PMB1#)
  • Xilinx platform cable USB

Figure 1. System design block diagram.
Figure 1. System design block diagram.

  • 5508fig01

    5508fig01

  • 5508fig03

    5508fig03

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Designed, Built, Tested

Board pictured here has been fully assembled and tested. Not available for sale.

 

Maxim Devices (19)

Part Number Name Product Family Order Design kits and evaluation modules
DS1990R Serial Number iButton Memory Buy Now Not Available
DS18S20-PAR Parasite-Power Digital Thermometer Sensors Buy Now Not Available
DS1920 Temperature iButton iButton Buy Now Not Available
DS1990A iButton Serial Number Memory Buy Now Not Available
DS2406 Dual Addressable Switch Plus 1Kb Memory Memory Buy Now Design Kits
DS2413 1-Wire Dual Channel Addressable Switch Controllers/Expanders Buy Now Design Kits
DS2408 1-Wire 8-Channel Addressable Switch Memory Buy Now Not Available
DS2431 1024-Bit 1-Wire EEPROM Memory Buy Now Design Kits
DS2411 Silicon Serial Number with VCC Input Memory Buy Now Design Kits
DS2401 Silicon Serial Number Memory Buy Now Design Kits
DS1825 Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID Sensors Buy Now Not Available
DS1821 Programmable Digital Thermostat and Thermometer Sensors Buy Now Not Available
MAX31826 1-Wire Digital Temperature Sensor with 1Kb Lockable EEPROM Sensor Interface Buy Now Design Kits
DS28EA00 1-Wire Digital Thermometer with Sequence Detect and PIO Sensor Interface Buy Now Design Kits
DS18B20 Programmable Resolution 1-Wire Digital Thermometer Sensors Buy Now Design Kits
DS18B20-PAR 1-Wire Parasite-Power Digital Thermometer Sensors Buy Now Not Available
DS18S20 1-Wire Parasite-Power Digital Thermometer Sensors Buy Now Not Available
MAX31820 1-Wire Ambient Temperature Sensor Sensors Buy Now Not Available
MAX31820PAR 1-Wire Parasite-Power, Ambient Temperature Sensor Sensors Buy Now Not Available

Maxim Devices (19)

Part Number Product Family
Memory
Serial Number iButton
Not Available
Sensors
Parasite-Power Digital Thermometer
Not Available
iButton
Temperature iButton
Not Available
Memory
iButton Serial Number
Not Available
Memory
Dual Addressable Switch Plus 1Kb Memory
Controllers/Expanders
1-Wire Dual Channel Addressable Switch
Memory
1-Wire 8-Channel Addressable Switch
Not Available
Memory
1024-Bit 1-Wire EEPROM
Memory
Silicon Serial Number with VCC Input
Memory
Silicon Serial Number
Sensors
Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID
Not Available
Sensors
Programmable Digital Thermostat and Thermometer
Not Available
Sensor Interface
1-Wire Digital Temperature Sensor with 1Kb Lockable EEPROM
Sensor Interface
1-Wire Digital Thermometer with Sequence Detect and PIO
Sensors
Programmable Resolution 1-Wire Digital Thermometer
Sensors
1-Wire Parasite-Power Digital Thermometer
Not Available
Sensors
1-Wire Parasite-Power Digital Thermometer
Not Available
Sensors
1-Wire Ambient Temperature Sensor
Not Available
Sensors
1-Wire Parasite-Power, Ambient Temperature Sensor
Not Available

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