Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
SMJ416400 Datasheet(PDF) 6 Page - Texas Instruments |
|
SMJ416400 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 22 page SMJ416400 4194304 BY 4-BIT DYNAMIC RANDOM-ACCESS MEMORY SGMS042E – MARCH 1992 – REVISED MARCH 1996 6 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 switching characteristics over recommended ranges of supply voltage and operating free-air temperature (see Note 6) PARAMETER ’416400 - 70 ’416400 - 80 ’416400 - 10 UNIT PARAMETER MIN MAX MIN MAX MIN MAX UNIT tAA Access time from column-address 35 40 45 ns tCAC Access time from CAS low 18 20 25 ns tCPA Access time from column precharge 40 45 50 ns tRAC Access time from RAS low 70 80 100 ns tOEA Access time from OE low 18 20 25 ns tOFF Output disable time after CAS high (see Note 7) 0 18 0 20 0 25 ns tOEZ Output disable time after OE high (see Note 7) 0 18 0 20 0 25 ns NOTES: 6. Valid data is presented at the outputs after all access times are satisfied but can go from the high-impedance state to an invalid-data state prior to the specified access times as the outputs are driven when CAS goes low. 7. tOFF and tOEZ are specified when the outputs are no longer driven. The outputs are disabled by bringing either OE or CAS high. timing requirements over recommended ranges of supply voltage and operating free-air temperature ’416400 - 70 ’416400 - 80 ’416400 - 10 UNIT MIN MAX MIN MAX MIN MAX UNIT tRC Cycle time, random read or write (see Note 8) 130 150 180 ns tRWC Cycle time, read-write (see Note 8) 181 205 245 ns tPC Cycle time, page mode read or write (see Notes 8 and 9) 45 50 55 ns tPRWC Cycle time, page mode read-write (see Note 8) 96 105 120 ns tRASP Pulse duration, RAS low, page mode (see Note 10) 70 100 000 80 100 000 100 100 000 ns tRAS Pulse duration, RAS low, nonpage mode (see Note 10) 70 10 000 80 10 000 100 10 000 ns tCAS Pulse duration, CAS low (see Note 11) 18 10 000 20 10 000 25 10 000 ns tCP Pulse duration, CAS high 10 10 10 ns tRP Pulse duration, RAS high (precharge) 50 60 70 ns tWP Pulse duration, W low 10 10 10 ns tASC Setup time, column address before CAS going low 0 0 0 ns tASR Setup time, row address before RAS going low 0 0 0 ns tDS Setup time, data (see Note 12) 0 0 0 ns tRCS Setup time, W high before CAS going low 0 0 0 ns tCWL Setup time, W low before CAS going high 18 20 25 ns tRWL Setup time, W low before RAS going high 18 20 25 ns tWCS Setup time, W low before CAS going low (early-write operation only) 0 0 0 ns tWRP Setup time, W high before RAS going low (CBR refresh only) 10 10 10 ns tCAH Hold time, column address after CAS low 15 15 15 ns tDH Hold time, data (see Note 12) 15 15 15 ns tRAH Hold time, row address after RAS low 10 10 10 ns tRCH Hold time, W high after CAS high (see Note 13) 0 0 0 ns tRRH Hold time, W high after RAS high (see Note 13) 0 0 5 ns NOTES: 8. All cycle times assume tT = 5 ns, referenced to VIH(min) and VIL(max). 9. To assure tPC min, tASC should be ≥ tCP . 10. In a read-write cycle, tRWD and tRWL must be observed. 11. In a read-write cycle, tCWD and tCWL must be observed. 12. Referenced to the later of CAS or W in write operations 13. Either tRRH or tRCH must be satisfied for a read cycle. |
Número de pieza similar - SMJ416400 |
|
Descripción similar - SMJ416400 |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |