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Z90341 Schematic ( PDF Datasheet ) - Zilog.

Teilenummer Z90341
Beschreibung DIGITAL TELEVISION CONTROLLER
Hersteller Zilog.
Logo Zilog. Logo 




Gesamt 7 Seiten
Z90341 Datasheet, Funktion
Zilog
PRELIMINARY
Z90341
PRELIMINARY
CUSTOMER PROCUREMENT SPECIFICATION
FEATURES
s Part
OTP
Number ROM
Z90341 64K x 16
RAM
(Word)
1K x 16
s 52-Pin Shrink DIP Package
s 4.5- to 5.5-Volt Operating Range
s Z89C00 RISC Processor Core
s 0°C to +70°C Temperature Range
Speed
(MHz)
12
Z90341
DIGITAL TELEVISION CONTROLLER
s Direct Closed Caption Decoding
s TV Tuner Serial Interface
s Customized Character Set
s Character Control Mode
s Directly Controlled Receiver Functions
s V-Chip Decode
GENERAL DESCRIPTION
The Z90341 is a member of Zilog's family of Digital
Television Controllers designed to provide complete audio
and video control of television receivers, video recorders,
and advanced on-screen display facilities.
Serial interfacing with the television tuner is provided
through the tuner serial port. Digital channel tuning
adjustments may be accessed through the industry-
standard I2C port.
The Z90341 features a powerful Z89C00 RISC processor
core that controls on-board peripheral functions and
registers using the standard processor instruction set.
In closed caption mode, text can be decoded directly from
the composite video signal and displayed on the screen
with assistance from the processor's digital signal
processing capabilities. The character representation in
this mode allows for a simple attribute control through the
insertion of control characters.
The character control mode provides access to the full set
of attribute controls. The modification of attributes is allowed
on a character-by-character basis. The insertion of control
characters permits direction of other character attributes.
Display attributes, including underlining, italics, blinking,
eight foreground/background colors, character position
offset delay, and background transparency, are made
possible through a fully customized 512 character set.
Additional hardware provides the capability to display two
to three times normal size characters. The smoothing logic
contained in the on-screen display circuit improves the
appearance of larger fonts. Special circuitry can be
activated to improve the visibility of text by adding a right-
sided shadow effect to the characters.
Receiver functions such as color and volume can be
directly controlled by six 8-bit pulse width modulated
ports.
Notes:
All Signals with a preceding front slash, "/", are active Low, e.g.:
B//W (WORD is active Low); /B/W (BYTE is active Low, only).
Power connections follow conventional descriptions below:
Connection
Power
Ground
Circuit
VCC
GND
Device
VDD
VSS
CP97TEL2500
1






Z90341 Datasheet, Funktion
Zilog
PRELIMINARY
ABSOLUTE MAXIMUM RATINGS
Z90341
Symbol
Parameter
VCC Power Supply Voltage
VID Input Voltage
VIA Input Voltage
V Output Voltage
O
I Output Current High
OH
IOH Output Current High
I Output Current Low
OL
I Output Current Low
OL
T Operating Temperature
A
T Storage Temperature
S
Notes:
a) 1 mA max. when output pad impedance is 600 Ω.
b) 1 mA max. when output pad impedance is 600 Ω.
Min Max Units Conditions
0 7V
–0.3 VCC +0.3 V Digital Inputs
–0.3 VCC +0.3 V Analog Inputs (A/D0...A/D4)
–0.3 V +0.3 V All Push-Pull Digital Output
CC
–10/–1a mA
One Pin
–100
mA All Pins
20/1b
mA
One Pin
200 mA All Pins
0 70
–65 150
°C
°C
DC CHARACTERISTICS
TA = 0°C to + 70°C; VCC = 4.5 V to + 5.5 V; FOSC = 32.768 KHz
Symbol
VIL
VIH
Parameter
Input Voltage Low
Input Voltage High
Min
0
0.6 VCC
Max
0.2 VCC
VCC
Typical
0.4
3.6
V Output Voltage Low
OL
VOH Output Voltage High
V Input Voltage XTAL1 Low
XL
V Input Voltage XTAL1 High
XH
V Schmitt Hysteresis
HY
IIR Reset Input Current
IIL Input Leakage
ICC Supply Current
I Supply Current
CC1
ICC2 Supply Current
VCC –0.9
V –2.0
CC
3.0
–3.0
0.4
0.3 V
CC
0.75
150
3.0
100
300
40
0.16
4.75
1.0
3.5
0.5
90
0.01
60
100
5
Units
V
V
V
V
V
V
V
µA
µA
mA
µA
µA
Conditions
@ I = 1 mA
OL
@ IOL = 0.75 mA
External Clock
Generator Driven
On XTAL1 Input Pin
VRL = 0 V
@ 0 V and VCC
Sleep Mode @ 32 KHz
Stop Mode
6 CP97TEL2500

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