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GENERAL DESCRIPTION

ZiLOG’s Z8? MCU single-chip family now includes the Z86C34/C35/C36/C44/C45/C46 product line, featuring enhanced wake-up circuitry, programmable Watch-Dog Timers (WDT), and low-noise/EMI options. Each of the new enhancements to the Z8 offer a more efficient, cost-effective design and provide the user with increased design flexibility over the standard Z8 microcontroller core. The low-power consumption CMOS microcontroller offers fast execution, efficient use of memory, sophisticated interrupts, input/output bit manipulation capabilities, and easy hardware/software system expansion.

FEATURES

? 28-Pin DIP, 28-Pin SOIC and PLCC Packages (C34,

C35, C36)

? 40-Pin DIP, 44-Pin PLCC and QFP Packages (C44,

C45, C46)

? 3.0- to 5.5-Volt Operating Range

? Clock Free Watch-Dog Timer (WDT) Reset

? Operating Temperature Ranges:

Standard: 0 °C to 70 °C

Extended: –40 °C to +105 °C

? Expanded Register File (ERF)

? Full-Duplex UART (ASCI)

? Dedicated 16-Bit Baud Rate Generator

? 32 Input/Output Lines (C44/C45/C46)

24 Input/Output Lines (C34/C35/C36)

? Vectored, Prioritized Interrupts with Programmable Polarity

? Two Analog Comparators

? Two Programmable 8-Bit Counter/Timers, Each with

Two 6-Bit Programmable Prescaler

? Watch-Dog Timer (WDT)/Power-On Reset (POR)

? On-Chip Oscillator that Accepts a Crystal, Ceramic Resonator,

LC, RC, or External Clock

? RAM and ROM Protect

? Optional 32-kHz Oscillator