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New Zilog Z8051 Microcontrollers

By Bill Giovino
Feb 28, 2012 - 2:29:00 PM

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Zilog, a wholly-owned subsidiary of IXYS Corporation, today has introduced a new Zilog family of low-power microcontrollers based upon the trusted 8051 architecture.

The Zilog Z8051 is an optimized 8051 architecture that only needs two clocks per instruction cycle. It boasts a single-cycle multiply, an LCD controller, and a 100nA STOP2 mode. It is built on a low-power 0.18um process.

"Zilog, as a part of IXYS, maintains a continuing commitment to supporting our customers with a long product life cycle, especially in power management, where IXYS has been growing worldwide. With the growth of digital power management in energy-efficient products, for clean energy generation, automation, appliances, automotive, lighting  and telecommunication, we believe that also offering the popular Z8051 allows us to accelerate the adoption of our microcontroller solutions in these markets," said Steve Darrough, Zilog's VP of Marketing.

Zilog Z8051 Features

Zilog Z8051
Zilog Z8051
The new Z8051 devices include features such as:

  • 1.8V to 5.5V operation
  • Up to 16MHz
  • Up to 64KBytes Flash
  • On-chip oscillator
  • On-chip PLL
  • Two clocks per instruction cycle
  • Interrupt latency: 3 instruction cycles (best case)
  • Most instructions execute in one cycle
  • Hardware Multiply/Divide
    16x16 Signed Multiply in one clock cycle
    32/16 Signed Divide in 32 clock cycles
  • Watchdog timer
  • Brown-out detection
  • Power Saving Modes (idle, Stop1, Stop2)
  • 100nA STOP2 mode
  • Run current: 10mA (max) @ 8MHz
  • 8-input or 15-input 12-bit ADC
  • LCD controller
  • -40°C to 85°C
Zilog Z8051
Device p/n:
I/O pins Serial
PWM Timers
8/16 BIT
Package Additional Features
Z51F0410 4 256 256 8 SPI, I2C , USART 1 3 10 pin, SSOP Analog Comparator, ROM Encryption
Z51F0811 8 512 256 30 SPI, I2C , USART 1 5 16, 20,28 TSSOP,
32 QFN
Z51F3220 32 1000   42 SPI, I2C , USART 7 5 44 MQFP,
32 SOP
LCD Driver 21 seg. / 8 com., Pulse Gen.,
Z51F3221 32 1250   46 SPI, USART 2 4 64, 80 LQFP LCD Driver 32 seg. / 8 com.,  SIO port
Z51F6412 64 3250   66 SPI, I2C , USART 5 6 64, 80 LQFP PLL (1.38Mhz - 14.75 MHz),
Hardware MULT/DIV

Last year NXP exited the 8051 market, something that has widely been considered a bad move. Now, 8051 suppliers Zilog, Atmel, Microchip, and Silicon Labs are marching into NXP's customers, happy to design out NXP's 8051 along with any other NXP device they can get. Customers feeling buyer's remorse over choosing NXP have many comforting options to choose from.

 Zilog Z8051 Availability
"Zilog's Z8051 products and development kits are now available for customers that place orders through Zilog's distribution or representatives".


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New Zilog Z8051 Microcontrollers

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Product data and specifications in this article are the responsibility of the manufacturer. No warrenty is expressed or implied as to the accuracy of manufacturer-supplied data. So there.
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