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New Zilog ZNEO 16-bit Single-Cycle CISC Microcontroller

By Bill Giovino
Sep 27, 2006 - 10:05:00 AM

New Zilog ZNEO Z16F 16-bit Flash Microcontroller targets high end code efficient applications
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ZiLOG has introduced the Zilog ZNEO, their first 16-bit microcontroller product as an extension of their popular Z8 8-bit product line. This new 16-bit core, called ZNEO (pronounced "Zee-knee-oh"), fills Zilog's product family portfolio and positions the company as a broad range microcontroller supplier.

Zilog ZNEO Block Diagram
Zilog ZNEO Block Diagram
Robin Abrams, ZiLOG's interim CEO, had this to say about the ZNEO: "ZNEO addresses the significant market demand for a full-featured, 16-bit solution providing up to 128KB Flash memory and more processing power, as well as a migration option with higher code density for our existing Z8 Encore! base. We are already working with several customers on security and high end motor control applications with ZNEO, providing a cost-competitive, single device System-on-Chip (SOC) option which, in motor control applications for example, can not only run the motor but control other functions of the product such as the display, keypad and other user interfaces, negating the need for additional MCUs and lowering overall bill of materials."

Zilog ZNEO Core Features
The new Zilog ZNEO core boasts an impressive array of features, including:

  • 20 MHz Zilog ZNEO CPU Core (Big Endian) with pipelined architecture
  • Single-Cycle CISC (more powerful than a single-cycle RISC)
  • Direct register-to-register architecture
  • Sixteen 32-bit ALU registers
  • Supports 8-bit, 16-bit, and 32-bit ALU operations
  • 24-bit address bus
  • 16-bit internal data bus
  • 32-bit ALU
  • C-compiler friendly instruction set
  • Zero-wait state internal Flash
  • 7 cycle interrupt latency (typical)
  • 32x32 Multiply (signed or unsigned)
  • 64/32 Divide  (signed or unsigned)
  • 24-bit stack with overflow protection
  • Programmable Priority Interrupts
  • Oscillator Fail Detection

Key features of the first members of the Zilog ZNEO Z16F product family include:

  • Up to 128 KB internal Flash program memory with 16-bit access and in-circuit programming capability
  • Up to 4 KB internal RAM with 16-bit access
  • 12-channel 10-bit A/D with 2µSec Conversion Time
  • Internal Operational Amplifier, Analog Comparator
  • Dual on-chip oscillator for 5.53 MHz operation or low power 32KHz secondary oscillator
  • 4-channel DMA
  • Two full-duplex 9-bit UARTS with support for LIN and IrDA
  • I2C master-slave controller
  • Enhanced Serial Peripheral Interface (ESPI) controller
  • Pin compatible to ZiLOG Encore Series
  • Temperature ranges: 0°C to +70°C, -40°C to +105°C, -40°C to +125°C

 Part Number    Flash (KB)    RAM (KB)    Ext IF     I/O    64/68 pin PKG    80 pin PKG 100 pin PKG
Z16F2811 128 4 Yes 76     X
  128 4 Yes 60   X  
Z16F2810 128 4 No 60   X  
  128 4 No 46 X    
Z16F6411 64 4 Yes 76     X
  64 4 Yes 60   X  
Z16F3211 32 2 Yes 76     X
  32 2 Yes 60   X

Software and Development Kits
The ZiLOG ZNEO Z16F series is supported by the ZNEO Series Modular Development System (MDS). A free ANSI C-Compiler with IDE is also available. Tools include plenty of code examples.

About Zilog, Inc.
Founded in 1974, Zilog won international acclaim for designing one of the first architectures in the microprocessors and microcontrollers industry. Today, Zilog is a leading global supplier of 8-bit micro logic devices. It designs, manufactures and markets a broad portfolio of devices for embedded control and communication applications used in consumer electronics, home appliances, security systems, point of sales terminals, personal computer peripherals, as well as industrial and automotive applications. ZiLOG is headquartered in San Jose, California, and employs approximately 500 people worldwide with sales offices throughout Asia, Europe and North America.


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New Zilog ZNEO 16-bit Single-Cycle CISC Microcontroller

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