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W986408CH Datasheet

Part Number W986408CH
Manufacturers Winbond
Logo Winbond
Description 2M x 8BIT x 4 BANKS SDRAM
Datasheet W986408CH DatasheetW986408CH Datasheet (PDF)

W986408CH 2M x 8 bit x 4 Banks SDRAM Features • • • • • • • • • • • • • 3.3V ± 0.3V power supply Up to 133MHz clock frequency 2,097,152 words x 4 banks x 8 bits organization Auto Refresh and Self Refresh CAS latency: 2 and 3 Burst Length: 1, 2, 4, 8 , and full page Burst read, Single Writes Mode Byte data controlled by DQM Power-Down Mode Auto-Precharge and controlled precharge 4k refresh cycles / 64ms Interface: LVTTL Package: TSOP II 54 pin, 400 mil - 0.80 General Description W986408CH is a h.

  W986408CH   W986408CH






2M x 8BIT x 4 BANKS SDRAM

W986408CH 2M x 8 bit x 4 Banks SDRAM Features • • • • • • • • • • • • • 3.3V ± 0.3V power supply Up to 133MHz clock frequency 2,097,152 words x 4 banks x 8 bits organization Auto Refresh and Self Refresh CAS latency: 2 and 3 Burst Length: 1, 2, 4, 8 , and full page Burst read, Single Writes Mode Byte data controlled by DQM Power-Down Mode Auto-Precharge and controlled precharge 4k refresh cycles / 64ms Interface: LVTTL Package: TSOP II 54 pin, 400 mil - 0.80 General Description W986408CH is a high speed synchronous dynamic random access memory (SDRAM) , organized as 2M words x 4 banks x 8 bits. Using pipelined architecture and 0.20um process technology, W986408CH delivers a data bandwidth of up to 133M ( 75) bytes per second. To fully comply to the personal computer industrial standard, W986408CH is sorted into two speed grades: -75 and -8H. The -75 is compliant to the PC133 specitication, The -8H is compliant to the PC100/CL2 specification Accesses to the SDRAM are burst oriented. Consecutive memory location in one page can be accessed at a burst length of 1, 2, 4, 8 or full page when a bank and row is selected by an ACTIVE command. Column addresses are automatically generated by the SDRAM internal counter in burst operation. Random column read is also possible by providing its address at each clock cycle. The multiple bank nature enables interleaving among internal banks to hide the precharging time. By having a programmable Mode Register, the system can change burst lengt.


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