z86247 ZiLOG Semiconductor, z86247 Datasheet

z86247

Manufacturer Part Number

z86247

Description

40-pin Low-cost Digital Television Controller 4ldtc

Manufacturer

ZiLOG Semiconductor

Datasheet

1.Z86247.pdf (8 pages)

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GENERAL DESCRIPTION

The Z86247 40-pin Low-Cost Digital Television Controller

(4LDTC) introduces a new level of sophistication to single-

chip architecture. The Z86247 is a member of the Z8

single-chip microcontroller family with 8 Kbytes of ROM

and 236 bytes of RAM. The device is offered in a 40-pin

package and is CMOS compatible. The 4LDTC offers

mask programmed ROM which enables the Z8

microcontroller to be used in a high volume production

application device embedded with a custom program

(customer supplied program) and combines together with

the Z86C27 (DTC) and Z86127 (LDTC) to provide support

for high end, mid range and low end TV applications.

Zilog’s 4LDTC offers fast execution, efficient use of memory,

sophisticated interrupts, input/output bit manipulation

capabilities, and easy hardware/software system expansion

along with low cost and low power consumption. The

device provides an ideal performance and reliability solution

for consumer and industrial television applications.

The Z86247 architecture is characterized by utilizing Zilog’s

advanced Superintegration™ design methodology. The

device has an 8-bit internal data path controlled by a Z8

microcontroller and On Screen Display (OSD) logic circuits

and Pulse Width Modulators (PWM). On-chip peripherals

include two register mapped I/O ports (Ports 2 and Port 3),

interrupt control logic (one software, two external and three

internal interrupts) and a standby mode recovery input

port (Port 3, pin P30).

The OSD control circuits support 8 rows by 20 columns of

characters. The character color is specified by row. One of

the eight rows is assigned to show two kinds of colors for

bar type displays such as volume control. The OSD is

capable of displaying high resolution (11x15 dot pattern)

characters.

DC 9027-00

(7-27-94)

Z86247

40-P

A 14-bit PWM port provides enough voltage resolution for

a voltage synthesizer tuning system. Three 6-bit PWM

ports are used for controlling audio signal levels. Three

8-bit PWM ports used to vary picture levels.

The 4LDTC applications demand powerful I/O capabilities.

The Z86247 fulfills this with 24 pins dedicated to input or

output. These lines are grouped into three ports, and are

configurable under software control to provide timing,

status signals, parallel I/O and an address/data bus for

interfacing to external memory.

There are three basic address spaces available to support

this wide range of configurations: Program Memory, Video

RAM, and Register File. The Register File is composed of

236 bytes of general purpose registers, two I/O Port

registers, 15 control and status registers and three reserved

registers.

To unburden the program from coping with the real-time

problems such as counting/timing and data communication,

the 4LDTC offers two on-chip counter/timers with a large

number of user selectable modes (Figure 1).

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:

RELIMINARY

USTOMER

ELEVISION

Connection

Ground

Power

ROCUREMENT

-C

ONTROLLER

OST

Circuit

GND

IGITAL

PECIFICATION

(4LDTC)

CPS DC-9027-00

Device

Related parts for z86247

z86247 Summary of contents

Page 1

... Three 8-bit PWM ports used to vary picture levels. The 4LDTC applications demand powerful I/O capabilities. The Z86247 fulfills this with 24 pins dedicated to input or output. These lines are grouped into three ports, and are configurable under software control to provide timing, status signals, parallel I/O and an address/data bus for interfacing to external memory ...

Page 2

... KByte Program ROM Z8 CPU Core 256 Byte Register File Port 0 Port 1 A8-15 AD0-7 128 Byte Character RAM 4 KByte Character ROM Functional Block Diagram Z86247 CPS DC-9027-00 P27 P26 P25 Port 2 P24 P23 P22 P21 P20 PWM 1 PWM 1 14 -bit PWM 6 PWM 6 ...

Page 3

... P62 VCC P63 25 P64 P65 23 AFCIN 18 OSCIN OSCOUT 40-Pin Mask-ROM Plastic DIP CPS DC-9027-00 PWM6 PWM7 PWM8 PWM9 PWM10 PWM11 P27 P26 P25 P24 P23 P22 P21 P20 VBLANK VBLUE VGREEN VRED VSYNC HSYNC Z86247 3 ...

Page 4

... Min Max Units –0 –0 –0 –0 –10 mA –100 200 mA † –65 +150 C From Output Under Test 150 pF Test Load Diagram Z86247 CPS DC-9027-00 Notes [1] [2,3] 1 pin All total 1 pin All total VDD RLL RLH ...

Page 5

... CPS DC-9027- External Clock Generator Driven V External Clock Generator Driven V External Clock Generator Driven =1. =0. =– All inputs at rail mA All inputs at rail A All inputs at rail Z86247 5 ...

Page 6

... AC CHARACTERISTICS Timing Diagrams XTAL1 Tin IRQn External Clock Counter Timer 8 9 Interrupt Request Z86247 CPS DC-9027-00 ...

Page 7

... AC CHARACTERISTICS Timing Diagrams (Continued) Vcc Internal /RESET External /RESET HSYNC OSC2 10 12 Power-On Reset 13 On-Screen Display Z86247 CPS DC-9027- ...

Page 8

... Zilog, Inc. 210 East Hacienda Ave. Campbell, CA 95008-6600 Telephone (408) 370-8000 Telex 910-338-7621 FAX 408 370-8056 Z86247 CPS DC-9027-00 Min Max Unit 250 1000 n s ...

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