Z86L79 Datasheet, PDF (1/58 Pages) Zilog, Inc. – Low-Voltage Microcontroller

PRELIMINARY PRODUCT SPECIFICATION
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Z86L79/L80
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LOW-VOLTAGE MICROCONTROLLER
FEATURES
ROM RAM*
Part
(KB) (Bytes)
Z86L79
4
237
Z86L80
8
237
Note: *General-Purpose
I/O Voltage Range
24 2.0V to 3.9V
24 2.0V to 3.9V
s Three Standby Modes (Typical)
– STOP - 2 µA
– HALT - 0.8 mA
– Low Voltage Standby (<V_LV)
s Expanded Register File Control Registers
s Special Architecture to Automate Both Generation and
Reception of Complex Pulses or Signals:
– One Programmable 8-Bit Counter/Timer with Two
Capture Registers
– One Programmable 16-Bit Counter/Timer with
One Capture Register
– Programmable Input Glitch Filter for Pulse
Reception
s Five Priority Interrupts
s Low Voltage Detection and Standby Mode
s Watch-Dog/Power-On Reset Circuits
s Two Independent Comparators with Programmable
Interrupt Polarity
s On-Chip Oscillator that Accepts a Crystal, Ceramic
Resonator, LC, RC, or External Clock Drive
s Mask Selectable 200 kOhm Pull-Ups on Ports 0, 2, 3
– All Eight Port 2 Bits at One Time or Not
– Pull-Ups Automatically Disabled Upon
Selecting Individual Pins as Outputs.
s Maskable SingleTrip Point Inputs on P00 Through P03.
s Permanently Enabled WDT Option (Maskable)
s 28-Pin DIP and SOIC Packages
GENERAL DESCRIPTION
The Z86L79/L80 family of IR (InfraRed) Controllers are
ROM-based members of the Z8^® MCU single-chip micro-
controller family with 237 bytes of general-purpose RAM.
The only differentiating factor between these two versions
is the availability of ROM. Zilog's CMOS microcontrollers
offer fast execution, efficient use of memory, sophisticated
interrupts, input/output bit manipulation capabilities, auto-
mated pulse generation/reception, and easy hard-
ware/software system expansion along with cost-effective
and low power consumption.
The Z86L7X architecture is based on Zilog's 8-bit micro-
controller core with an Expanded Register File to allow ac-
cess to register mapped peripherals, I/O circuits, and pow-
erful counter/timer circuitry. The Z8^® MCU offers a flexible
I/O scheme, an efficient register and address space struc-
ture, and a number of ancillary features that are useful in
many consumer, automotive, computer peripheral, and
battery operated hand-held applications.
DS97LVO0601
PRELIMINARY
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