Ethernet SBC



Ethernet Connectivity Solutions

eZ80AcclaimPlus!™ Ethernet Zdots® Single Board Computers

Zilog’s eZ80AcclaimPlus! ™ Ethernet Zdots® Single Board Computers (SBCs) deliver a complete 10/100 Base-T Ethernet solution including an RFC compliant TCP/ IP Stack and RTOS. The flexibility provided by the RTOS allows the SBC to be used as the main application processor in addition to providing Ethernet connectivity.


The MCU is a 50MHz eZ80F91 which features an integrated Ethernet MAC and internal Dual Ported RAM which is supported by single cycle DMA to ensure Ethernet traffic does not compete with processor bus band width.16 KB of internal RAM is available of which 8KB is used for the Ethernet MAC.


ZTP is a preemptive, multi-tasking RTOS integrated with an RFC compliant TCP/ IP protocol software stack optimized for embedded eZ80F91 applications. The modular design of ZTP enables the user to include only the library objects required by the application minimizing the memory footprint.
This S/W is provided in object form free of charge and without royalties or license fees to Zilog customers.


ZTP-Supported Core Protocols



Higher-Level TCP/IP Services

HTTP/HTTPS server, TFTP server, SNMP agent, TELNET client /server, SMTP client, DNS client, TIMEP client and FTP client/server (includes file system).

Resources & Documentation

Order Samples

Product Information


eZ80AcclaimPlus! ASSP Product Brief PB0220

Zdots SBC for eZ80AcclaimPlus! Connectivity ASSP Product Specification PS0261

eZ80 CPU User Manual UM0077


eZ80AcclaimPlus! Development Kit 

ZDS II Development Tools

Technical Support

Zilog Forum




Application Notes & Source Code Files

Implementing Mixed Memory Modes on the eZ80 CPU (AN0339) + source code
•  Calling Assembly from C and Vice Versa: ZDSII for eZ80Acclaim! (AN0333)

ZDS II for eZ80Acclaim!: Explicit Code Memory Placement in C (AN0332) + source code

•  AJAX Web Page Control and Monitoring via the Internet Using the Zilog eZ80AcclaimPlus Embedded Web Server (AN0305) + source code

Data Transfer Between a Serial Link and a TCP/ IP Link Using the eZ80F91 MCU (AN0219) + source code

•  Ethernet Frame Transmission Using the eZ80F915050 Module (AN0212) + source code

Interfacing an HTML Form to the eZ80F91 MCU (AN0208) + source code

A Web Page Interface for the eZ80F91 MCU Using Java (AN0178) + source code


A Serial-to-TCP Gateway for eZ80AcclaimPlus! ™ Connectivity ASSP (AN0160) + source code 1, source code 2

Part Numbers
•  256KB + 1MB Flash
•  16KB + 512KB RAM
•  2- 60 pin dual in-line interface connector
•  79mm x 63mm (3.1" x 2.5")
•  256KB Flash
•  16KB + 128KB RAM
2 -56 pin dual in-line interface connector
51mm x 48mm (2.0" x 1.9")

eZ80AcclaimPlus! Features and Benefits
•  50 MHz High Performance eZ80® CPU Core
•  256 KB Flash Program Memory internal to the eZ80F91
•  1 MB additional Flash memory on eZ80F917050SBCG
•  512KB SRAM - eZ80F917050SBCG
•  128KB SRAM - eZ80F916005MODG
•  Power management features supporting Sleep, Halt, and peripheral power-down controls
•  32-Bit GPIO
Four 16-bit Counter/Timers with pre-scalers and direct input/output drive
Two independent UARTs with multi-drop mode
SPI and I2C ports
Watch-Dog Timer with selectable clock inputs
Real-time clock with 32KHz oscillator support
RJ-45 connector supporting 10/100BaseT Ethernet
56 pin dual in-line interface connector (eZ80F916005MODG)
60 pin dual in-line interface connector (eZ80F917050SBCG)
Full external processor bus, I/Os and peripherals available on interface connectors for system expansion
RFC Compliant TCP/IP stack and RTOS



eZ80F916 Block Diagram




©2011 Zilog, Inc.  eZ80AcclaimPlus! and Zdots are registered trademarks of Zilog, Inc.




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