z86227 ZiLOG Semiconductor, z86227 Datasheet

z86227

Manufacturer Part Number

z86227

Description

40-pin Low-cost Digital Television Controller 4ldtc

Manufacturer

ZiLOG Semiconductor

Datasheet

1.Z86227.pdf (8 pages)

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GENERAL DESCRIPTION

The Z86227 40-pin Low-Cost Digital Television Controller

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

architecture. The Z86227 is a member of the Z8

microcontroller family with 6 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 Z86227 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 6 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

either low resolution (5x7 dot pattern) or high resolution (11x15

dot pattern) characters.

A 14-bit PWM port provides enough voltage resolution for a

voltage synthesizer tuning system. Three 6-bit PWM ports are

DC 4074-01

(8-25-93)

single-chip

Z86227

40-P

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

Z86227 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:

USTOMER

ELEVISION

Connection

Ground

Power

ROCUREMENT

-C

ONTROLLER

OST

Circuit

GND

IGITAL

PECIFICATION

(4LDTC)

CPS DC-4074-01

Device

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z86227 Summary of contents

Page 1

... The 4LDTC applications demand powerful I/O capabilities. The Z86227 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 AD0-7 120 Byte Character RAM 3 KByte Character ROM Functional Block Diagram Z86227 CPS DC-4074-01 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 40-Pin Mask-ROM Plastic DIP CPS DC-4074-01 PWM6 PWM7 PWM8 PWM9 PWM10 PWM11 P27 P26 P25 P24 P23 P22 P21 P20 VBLANK VBLUE VGREEN VRED VSYNC HSYNC Z86227 3 ...

Page 4

... From Output Under Test CPS DC-4074-01 Max Units Notes + +0 +0 +8.0 V [2,3] CC – pin –100 mA All total pin 200 mA All total +150 C VDD 150 pF Test Load Diagram Z86227 RLL RLH ...

Page 5

... CPS DC-4074- 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 Z86227 5 ...

Page 6

... AC CHARACTERISTICS Timing Diagrams XTAL1 Tin IRQn External Clock Counter Timer 8 9 Interrupt Request Z86227 CPS DC-4074-01 ...

Page 7

... AC CHARACTERISTICS Timing Diagrams (Continued) Vcc Internal /RESET External /RESET HSYNC OSC2 10 12 Power-On Reset 13 On-Screen Display Z86227 CPS DC-4074- ...

Page 8

... Zilog, Inc. 210 East Hacienda Ave. Campbell, CA 95008-6600 Telephone (408) 370-8000 Telex 910-338-7621 FAX 408 370-8056 Z86227 CPS DC-4074-01 Min Max Unit 250 1000 ns ...

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