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Z86251 Dataheets PDF



Part Number Z86251
Manufacturers Zilog.
Logo Zilog.
Description STARSIGHT DATABASEENGINE
Datasheet Z86251 DatasheetZ86251 Datasheet (PDF)

Z86251 CP96TEL1900 CUSTOMERPROCUREMENTSPECIFICATION Z86251 STARSIGHTDATABASEENGINE FEATURES s Part Z86251 Package 68-Pin PLCC Speed (MHz) 24 s s Power-Down DRAM Data Retention Infrared Transmitter Circuits for TV and VCR Control CRC-32 Encoding and Decoding Logic Watch-Dog Timer (WDT) for Error Recovery I2C Compatible Bus for External Communication Test Multiplexer for Chip Debug On-Chip Crystal Oscillator s s s s s 4.5- to 5.5-Volt Operating Range s 0 °C to +70° C Temperature Range Low-.

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Z86251 CP96TEL1900 CUSTOMERPROCUREMENTSPECIFICATION Z86251 STARSIGHTDATABASEENGINE FEATURES s Part Z86251 Package 68-Pin PLCC Speed (MHz) 24 s s Power-Down DRAM Data Retention Infrared Transmitter Circuits for TV and VCR Control CRC-32 Encoding and Decoding Logic Watch-Dog Timer (WDT) for Error Recovery I2C Compatible Bus for External Communication Test Multiplexer for Chip Debug On-Chip Crystal Oscillator s s s s s 4.5- to 5.5-Volt Operating Range s 0 °C to +70° C Temperature Range Low-Power Consumption s Segmented Base Registers s DRAM Memory Control and Refresh Logic s s GENERAL DESCRIPTION Zilog's Z86251 StarSight Data Base Engine (DBE) is designed to process extracted data for the StarSight on-screen programming guide. The Z86251 provides a number of important peripheral functions, such as the IR Blaster to send command signals to the VCR, and low-power management to avoid loss of data. For fast memory data manipulation, the Z86251 offers segmented base registers. The device also features DRAM memory control and refresh logic. The DBE is optimized to work with Zilog's Z89300 series of TV controller devices to provide a cost-effective solution for StarSight programming-guide data extraction and display. 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 CP96TEL1900 (8/96) 1 Z86251 CP96TEL1900 PIN DESCRIPTION 9 P AD0 P AD1 P AD2 P AD3 P AD4 P AD5 P AD6 P AD7 GND2 VDD2 P XWR P XRD P ALE P XPSEN POSC 2 P A15 P A14 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 AT A0 PR DA PR TA1 DA TA PR 2 DA T A3 PX W E PX CA PX S RA VD S D1 GN D1 PE D A PE 9 D A PE 8 D A PE 7 D A PE 6 D A PE 5 D A PE 4 D A PE 3 D A2 8 7 6 5 4 3 2 1 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 PED A1 PED A0 PLPOSC2 PLPOSC1 PIO7 PIO6 PIO4 VDD4 GND4 PIO3 PIO2 PIO1 PIO0 PISB DTA PISB CLK P XRESET PXLPWARN PR D Z86251 68-Pin PLCC 53 52 51 50 49 48 47 46 45 44 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 2 PA 11 PA 10 PA 9 PB P A AN 8 PX D2 I IS BI NT GN D3 PU VDD PR 3 ES P DR E AM T EN PI O5 P6 80 5C PX LK TA PX L1 TA L2 PI R XC LK Z86251 68-Pin PLCC Pin Assignments 13 PA PA 12 Z86251 CP96TEL1900 PIN DESCRIPTION (Continued) Z86251 Pinouts 3 Z86251 CP96TEL1900 ABSOLUTE MAXIMUM RATINGS Symbol VDD TA TS Parameter Power Supply Voltage Operating Ambient Temp. Storage Temperature Min –0.3 0 –65 Max 7 70 150 Units V °C °C Conditions All pins with respect to GND Stress greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; operation of the device at any condition above those indicated in the operational sec- tions of these specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 4 Z86251 CP96TEL1900 DC CHAR.


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