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Z86L7308VSC View Datasheet(PDF) - Zilog

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Z86L7308VSC Datasheet PDF : 66 Pages
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Z86L88/81/86/87/89/73
IR/Low-Voltage Microcontroller
GENERAL DESCRIPTION (Continued)
consumer, automotive, computer peripheral, and battery
operated hand-held applications.
There are four basic address spaces available to support
a wide range of configurations: Program Memory, Regis-
ter File, Expanded Register File, and External Memory.
The register file is composed of 256 bytes of RAM. It in-
cludes four I/O port registers, 16 control and status regis-
ters and the rest are General Purpose registers. The Ex-
panded Register File consists of two additional register
groups (F and D). External Memory is not available on 28-
pin versions.
To unburden the program from coping with such real-time
problems as generating complex waveforms or receiving
and demodulating complex waveform/pulses, the Z86LXX
family offers a new intelligent counter/timer architecture
with 8-bit and 16-bit counter/timers (Figure 1). Also includ-
ed are a large number of user-selectable modes, and two
on-board comparators to process analog signals with sep-
arate reference voltages (Figure 2).
Notes: All Signals with a preceding front slash, "/", are ac-
tive Low, e.g., B//W (WORD is active Low); /B/W (BYTE is
active Low, only).
Power connections follow conventional descriptions be-
low:
Connection
Power
Ground
Circuit
VCC
GND
Device
VDD
VSS
HI16
8
LO16
8
1 24 8
SCLK Clock
Divider
Input Glitch
Filter
Edge
Detect
Circuit
16-Bit
T16
8
TC16H
16
8
TC16L
HI8
LO8
8
8
8-Bit
T8
8
8
TC8H
TC8L
Timer 16
And/Or
Logic
Timer 8/16
Timer 8
Figure 1. Counter/Timers Diagram
2
PRELIMINARY
DS96LV00800
 

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