Z86C34 Datasheet, PDF (1/70 Pages) Zilog, Inc. – CMOS Z8 MCUs WITH ASCI UART OFFER EFFICIENT, COST-EFFECTIVE DESIGN FLEXIBILITY

PRELIMINARY PRODUCT SPECIFICATION
Z86C34/C35/C36
Z86C44/C45/C46
CMOS Z8^® MCUS WITH ASCI UART
OFFER EFFICIENT, COST-EFFECTIVE
DESIGN FLEXIBILITY
FEATURES
Device
ROM
(KB)
Z86C34
16
Z86C35
32
Z86C36
64
Z86C44
16
Z86C45
32
Z86C46
64
Note: *General-Purpose.
RAM*
(Bytes)
237
237
237
236
236
236
Speed
(MHz)
16
16
16
16
16
16
• 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 Po-
larity
• 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 Res-
onator, LC, RC, or External Clock
• RAM and ROM Protect
• Optional 32-kHz Oscillator
GENERAL DESCRIPTION
ZiLOG’s Z8^® MCU single-chip family now includes the
Z86C34/C35/C36/C44/C45/C46 product line, featuring en-
hanced wake-up circuitry, programmable Watch-Dog Tim-
ers (WDT), and low-noise/EMI options. Each of the new en-
hancements 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/out-
put bit manipulation capabilities, and easy hardware/soft-
ware system expansion.
The Z8 subfamily features an Expanded Register File (ERF)
to allow access to register-mapped peripheral and I/O cir-
cuits. Four basic address spaces are available to support this
wide range of configurations: Program Memory, Register
File, Data Memory, and ERF. The Register File is composed
of 236/237 bytes of general-purpose registers, four I/O port
registers, and 15 control and status registers. The ERF con-
sists of twelve control registers.
For applications demanding powerful I/O capabilities, the
Z86C34/C35/C36 offers 24 pins, and the Z86C44/C45/C46
offers 32 pins dedicated to input and output. These lines are
DS007601-Z8X0499
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