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MFG:CY  Package Cooled:TQFP  D/C:529  

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Part Number: CY7C1338

 

MFG: CY

Package Cooled: TQFP

D/C: 529

Description: The CY7C1338 is a 3.3V, 128K by 32 synchronous cache RAM designed to interface with high-speed micropr...


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CY7C1338 General Description


The CY7C1338 is a 3.3V, 128K by 32 synchronous cache RAM designed to interface with high-speed microprocessors with minimum glue logic. Maximum access delay from clock rise is 7.5 ns (117-MHz version). A 2-bit on-chip counter captures the first address in a burst and increments the address automatically for the rest of the burst access.

The CY7C1338 allows both interleaved and linear burst sequences, selected by the MODE input pin. A HIGH selects an interleaved burst sequence, while a LOW selects a linear burst sequence. Burst accesses can be initiated with the Processor Address Strobe (ADSP) or the cache Controller Address Strobe (ADSC) inputs. Address advancement is controlled by the address advancement (ADV) input.

A synchronous self-timed write mechanism is provided to simplify the write interface. A synchronous chip enable input and an asynchronous output enable input provide easy control for bank selection and output three-state control.

CY7C1338 Maximum Ratings

(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ...................................65°C to +150°C
Ambient Temperature with
Power Applied...............................................55°C to +125°C
Supply Voltage on VDD Relative to GND................0.5V to +4.6V
DC Voltage Applied to Outputs
in High Z State[5]...............................................0.5V to VDD + 0.5V
DC Input Voltage[5]........................................... 0.5V to VDD + 0.5V
Current into Outputs (LOW)......................................... 20 mA
Static Discharge Voltage .......................................... >2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current.................................................... >200 mA

CY7C1338 Features

• Supports 117-MHz microprocessor cache systems with zero wait states
• 128K by 32 common I/O
• Fast clock-to-output times
   -7.5 ns (117-MHz version)
• Two-bit wraparound counter supporting either interleaved or linear burst sequence
• Separate processor and controller address strobes provide direct interface with the processor and external cache controller
• Synchronous self-timed write
• Asynchronous output enable
• 3.3V I/Os
• JEDEC-standard pinout
• 100-pin TQFP packaging
• ZZ "sleep" mode

CY7C1338 Connection Diagram

CY7C1338  Connection Diagram

CY7C1338 datasheet

CY7C1338
PDF/DataSheet Download

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