Benutzerhandbuch für Cypress CY7C1243V18

Inhaltsverzeichnis

• Features

  1
• Configurations

  1
• Functional Description

  1
• Selection Guide

  1
• Logic Block Diagram (CY7C1241V18)

  2
• Logic Block Diagram (CY7C1256V18)

  2
• Logic Block Diagram (CY7C1243V18)

  3
• Logic Block Diagram (CY7C1245V18)

  3
• Pin Configurations

  4
• Pin Definitions

  6
• Functional Overview

  8
  • Read Operations

    8
  • Write Operations

    8
  • Byte Write Operations

    8
  • Concurrent Transactions

    8
  • Depth Expansion

    9
  • Programmable Impedance

    9
  • Echo Clocks

    9
  • Valid Data Indicator (QVLD)

    9
  • Delay Lock Loop (DLL)

    9
• Application Example

  10
• Truth Table

  10
• Write Cycle Descriptions

  11
• Write Cycle Descriptions

  11
• Write Cycle Descriptions

  12
• IEEE 1149.1 Serial Boundary Scan (JTAG)

  13
  • Disabling the JTAG Feature

    13
  • Test Access Port - Test Clock

    13
  • Test Mode Select

    13
  • Test Data-In (TDI)

    13
  • Test Data-Out (TDO)

    13
  • Performing a TAP Reset

    13
  • TAP Registers

    13
    • Instruction Register

      13
    • Bypass Register

      13
    • Boundary Scan Register

      13
    • Identification (ID) Register

      13
  • TAP Instruction Set

    13
    • IDCODE

      14
    • SAMPLE Z

      14
    • SAMPLE/PRELOAD

      14
    • BYPASS

      14
    • EXTEST

      14
    • EXTEST OUTPUT BUS TRI-STATE

      14
    • Reserved

      14
• TAP Controller State Diagram

  15
• TAP Controller Block Diagram

  16
• TAP Electrical Characteristics

  16
• TAP AC Switching Characteristics

  17
• TAP Timing and Test Conditions[16]

  17
• Identification Register Definitions

  18
• Scan Register Sizes

  18
• Instruction Codes

  18
• Boundary Scan Order

  19
• Power Up Sequence in QDR-II+ SRAM

  20
• Power Up Sequence

  20
• DLL Constraints

  20
• Power Up Waveforms

  20
• Maximum Ratings

  21
• Operating Range

  21
• Electrical Characteristics

  21
  • DC Electrical Characteristics

    21
  • AC Electrical Characteristics

    21
• Capacitance

  22
• Thermal Resistance

  22
• AC Test Loads and Waveforms

  22
• Switching Characteristics

  23
• Switching Waveforms

  24
• Ordering Information

  25
• Package Diagram

  27
• Document History Page

  28