Encore electronic UM014605-0208 Serial Communications Devices, I2C Interface, LED Addressing

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Z8 Encore!® Flash Microcontroller Development Kit

User Manual

Table 2. LED Cathode/Modem/Trigger

15

Function/Port E Bit No

4

3

2

1

0

Cathode Column 0

 

 

 

 

X

Cathode Column 1

 

 

 

X

 

Cathode Column 2

 

 

X

 

 

Cathode Column 3

 

X

 

 

 

Cathode Column 4

X

 

 

 

 

Note: Column 0 = Leftmost Column

Table 3. LED Addressing

Function/Port, Bit No

PE[5]

PE[6]

PE[7]

PG[7]

D3

X

 

 

 

D4

 

X

 

 

D1

 

 

X

 

D2

 

 

 

X

Serial Communications Devices

I2C Interface

The Z8 Encore! is compatible with I2C protocol (in this case the PCA8550). The I2C controller consists of two bidirectional bus lines, a serial data (SDA) line and a serial clock (SCL) line.

The I2C Controller operates in Master mode to transmit and receive data.

Having a PCA8550 on board enables configuration of the Expansion Module. The PCA8550 is a 4-bit multiplexer that selects four bits of data either from a non-volatile register or from the input pins. In this case four input pins are left unconnected and only a non-volatile register is selected as a source of data. Only three bits are used. Currently this chip is not used by the software provided with the board, so you can use it to your

UM014605-0208

Z8 Encore!® Evaluation Board

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Contents Z8 Encore! Flash Microcontroller Development Kit Z8 Encore! Flash Microcontroller Development Kit Revision HistoryRevision Date Level Description Table of Contents Schematics Index Customer Support Introduction Kit ContentsSoftware on CD-ROM Z8 Encore! Development Kit ContentsDocumentation Device driver software is installed with ZDS II and residesSystem/Software Requirements Supported Host System ConfigurationSetting up the Evaluation Board InstallationEvaluation Board External Connections Inserting a New Plug Configuration Installing the ZDS II-Z8 Encore! Software Getting Started Using ZDSZ8 Encore! Evaluation Board Introduction FeaturesMajor Z8 Encore! Evaluation Board Blocks Block DiagramZ8 Encore! Evaluation Board Block Diagram MCU LED Anode Assignments LED ArrayFunction/Port G Bit No Function/Port E Bit No Serial Communications DevicesI2C Interface LED AddressingSPI Interface IrDA TransceiverDevice/Bit No Value Smart Cable Power and Communication InterfacesExpansion Module Interface Z8 Encore! Flash Microcontroller Development Kit Header J6 Pin No Signal Name Function Direction CommentsPE7 Header J8 Z8 Encore! Flash Microcontroller Development Kit Header J8 Reset Header Function Registers or Devices Configuration Headers/JumpersConfiguration Headers and Jumpers Related HeadersJ6.12-J6.14-Console Enable/Disable J6.9-J6.11-Modem Enable/DisableShunt Status Function Device Affected Function Device or Register Affected J10 IrDA Enable/DisableJ9 Vref Shunt Status Function Device or Register AffectedJ13-RS-4851Enable Second Interface J12-RS-4851Enable First InterfaceShunt Position Function Device Affected Second RS-485 interface termination None Resistors disabled Embedded Modem Embedded Modem PlacementPushbuttons Sales Order Number Part Number ConfigurationZ8 Encore! Flash Microcontroller Development Kit SchematicsPE0 Modem Schematic, Z8F Encore Evaluation Board Z8 Encore! Smart Cable Index I2C Z8 Encore! Flash Microcontroller Development Kit Customer Support Document Disclaimer As used herein