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Z86L79 Datasheet

  • Z86L79

  • Low-Voltage Microcontroller

  • 58頁

  • ZILOG   ZILOG

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P
RELIMINARY
P
RODUCT
S
PECIFICATION
1
Z86L79/L80
L
OW
-V
OLTAGE
M
ICROCONTROLLER
FEATURES
Part
Z86L79
Z86L80
ROM
(KB)
4
8
RAM*
(Bytes)
237
237
s
1
Five Priority Interrupts
Low Voltage Detection and Standby Mode
Watch-Dog/Power-On Reset Circuits
Two Independent Comparators with Programmable
Interrupt Polarity
On-Chip Oscillator that Accepts a Crystal, Ceramic
Resonator, LC, RC, or External Clock Drive
Mask Selectable 200 kOhm Pull-Ups on Ports 0, 2, 3
鈥?All Eight Port 2 Bits at One Time or Not
鈥?Pull-Ups Automatically Disabled Upon
Selecting Individual Pins as Outputs.
Maskable SingleTrip Point Inputs on P00 Through P03.
Permanently Enabled WDT Option (Maskable)
28-Pin DIP and SOIC Packages
I/O
24
24
Voltage Range
2.0V to 3.9V
2.0V to 3.9V
s
s
s
Note:
*General-Purpose
s
Three Standby Modes (Typical)
鈥?STOP - 2
碌
A
鈥?HALT - 0.8 mA
鈥?Low Voltage Standby (<V
LV
)
Expanded Register File Control Registers
Special Architecture to Automate Both Generation and
Reception of Complex Pulses or Signals:
鈥?One Programmable 8-Bit Counter/Timer with Two
Capture Registers
鈥?One Programmable 16-Bit Counter/Timer with
One Capture Register
鈥?Programmable Input Glitch Filter for Pulse
Reception
s
s
s
s
s
s
s
GENERAL DESCRIPTION
The Z86L79/L80 family of IR (InfraRed) Controllers are
ROM-based members of the Z8
廬
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
廬
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
3-1

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