CY7C1223F-133AC

CY7C1223F-133AC Manufacturer

CY7C1223F-133AC Description

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CY7C1223F-133AC Datasheet (PDF)

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CY7C1223F-133AC Features

• Registered inputs and outputs for pipelined operation
• Optimal for performance (Double-Cycle deselect)
  • Depth expansion without wait state
• 128K × 18-bit common I/O architecture
• 3.3V ?5% and +10% core power supply (VDD)
• 3.3V I/O supply (VDDQ)
• Fast clock-to-output time
  • 3.5 ns (for 166-MHz device)
  • 4.0 ns (for 133-MHz device)
• Provide high-performance 3-1-1-1 access rate
• User-selectable burst counter supporting Intel® Pentium® interleaved or linear burst sequences
• Separate processor and controller address strobes
• Synchronous self-timed writes
• Asynchronous Output Enable
• JEDEC-standard 100-pin TQFP package and pinout
• ?ZZ? Sleep Mode option

CY7C1223F-133AC Description

The CY7C1223F SRAM integrates 131,072 x 18 SRAM cells with advanced synchronous peripheral circuitry and a two-bit counter for internal burst operation. All synchronous inputs are gated by registers controlled by a positive-edge-triggered Clock Input (CLK). The synchronous inputs include all addresses, all data inputs, address-pipelining Chip Enable (/CE1), depth-expansion Chip Enables (CE2 and /CE3), Burst Control inputs (/ADSC, /ADSP, and /ADV), Write Enables (/BW[A:B] and /BWE), and Global Write (/GW). Asynchronous inputs include the Output Enable (/OE) and the ZZ pin.

Addresses and chip enables are registered at rising edge of clock when either Address Strobe Processor (/ADSP) or Address Strobe Controller (/ADSC) are active. Subsequent burst addresses can be internally generated as controlled by the Advance pin (/ADV).

Address, data inputs, and write controls are registered on-chip to initiate a self-timed Write cycle.This part supports Byte Write operations (see Pin Descriptions and Truth Table for further details). Write cycles can be one to two bytes wide as controlled by the byte write control inputs. /GW active LOW causes all bytes to be written. This device incorporates an additional pipelined enable register which delays turning off the output buffers an additional cycle when a deselect is executed.This feature allows depth expansion without penalizing system performance.

The CY7C1223F operates from a +3.3V core power supply while all outputs operate with a +3.3V supply. All inputs and outputs are JEDEC-standard JESD8-5-compatible.

CY7C1223F-133AC Parameters

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