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Details, datasheet, quote on part number:Z86227
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Datasheet text preview:
Z86227 CPS DC-4074-01
CUSTOMER PROCUREMENT SPECIFICATION
Z86227
40-PIN LOW-COST DIGITAL TELEVISION CONTROLLER (4LDTC)
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® single-chip 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 SuperintegrationTM 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 u s e d for controlling audio signal levels. 8-bit PWM ports used to vary picture levels. Three
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: Connection Power Ground Circuit V CC GND Device VDD
VSS
DC 4074-01
(8-25-93)
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Z86227 CPS DC-4074-01
GENERAL DESCRIPTION (Continued)
XTAL1 XTAL2 /RESET RESET Oscillator WDT Counter Timer Counter Timer P30 P31 P34 P35 P36 P60 P61 P62 P63 P64 P65 AFCIN Port 3/ Interrupt 256 Byte Register File PWM 1 14 -bit PWM 1 6 KByte Program ROM Port 2 Z8 CPU Core P27 P26 P25 P24 P23 P22 P21 P20
Port 6 (Control)
Port 0 A8-15
Port 1 AD0-7
PWM 6 to PWM 8 6-bit
PWM 6 PWM 7 PWM 8
PWM 9 to PWM11
PWM 9 PWM 10 PWM 11
120 Byte Character RAM
On Screen Display
3 KByte Character ROM
OSCIN OSCOUT HSYNC VSYNC VRED VGREEN VBLUE VBLANK
Functional Block Diagram
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Z86227 CPS DC-4074-01
PIN CONFIGURATION
PWM1 P35 P36 P34 P31 P30 XTAL1 XTAL2 /RESET P60 GND P61 P62 VCC P63 P64 P65 AFCIN OSCIN OSCOUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Z86227 (LDTC) 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 PWM6 PWM7 PWM8 PWM9 PWM10 PWM11 P27 P26 P25 P24 P23 P22 P21 P20 VBLANK VBLUE VGREEN VRED VSYNC HSYNC
40-Pin Mask-ROM Plastic DIP
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