Features
Configurations
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Functional Description
Logic Block Diagram CY7C1546V18
Logic Block Diagram CY7C1557V18
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
+ Feedback
Logic Block Diagram CY7C1548V18
Logic Block Diagram CY7C1550V18
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
+ Feedback
165-Ball FBGA 15 x 17 x 1.4 mm Pinout
Pin Configuration
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Pin Configuration continued
165-Ball FBGA 15 x 17 x 1.4 mm Pinout
CY7C1548V18, CY7C1550V18
CY7C1546V18, CY7C1557V18
Pin Definitions
CY7C1546V18, CY7C1557V18
Pin Definitions continued
CY7C1548V18, CY7C1550V18
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Functional Overview
Read Operations
Write Operations
Valid Data Indicator QVLD
Application Example
Echo Clocks
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Truth Table
Write Cycle Descriptions
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Write Cycle Descriptions
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Write Cycle Descriptions
Disabling the JTAG Feature
Test Access Port-Test Clock
Performing a TAP Reset
IEEE 1149.1 Serial Boundary Scan JTAG
IDCODE
SAMPLE Z
SAMPLE/PRELOAD
BYPASS
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
TAP Controller State Diagram
Page 14 of
TAP Electrical Characteristics
TAP Controller Block Diagram
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
TAP Timing and Test Conditions
TAP AC Switching Characteristics
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Identification Register Definitions
Scan Register Sizes
Instruction Codes
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Boundary Scan Order
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Power Up Sequence in DDR-II+ SRAM
Power Up Waveforms
Power Up Sequence
DLL Constraints
Electrical Characteristics
DC Electrical Characteristics
Maximum Ratings
Operating Range
AC Electrical Characteristics
Capacitance
Thermal Resistance
Electrical Characteristics
AC Test Loads and Waveforms
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Figure 4. AC Test Loads and Waveforms
+ Feedback
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Switching Characteristics
Parameter
Read/Write/Deselect Sequence 29, 30, 31
Switching Waveforms
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Ordering Information
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Ordering Information continued
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Package Diagram
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Figure 6. 165-Ball FBGA 15 x 17 x 1.4 mm
+ Feedback
Document History Page
Issue
CY7C1546V18, CY7C1557V18 CY7C1548V18, CY7C1550V18
Document Number