 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
UPD78044F Datasheet(PDF) 39 Page - NEC |
|
|
|||||||||||||||||||||||||||||
UPD78044F Datasheet(HTML) 39 Page - NEC |
|
|
39 / 90 page  µPD78F0034B, 78F0034BY, 78F0034B(A), 78F0034BY(A) 39 Data Sheet U16369EJ1V0DS (2) Read/write operation (TA = –40 to +85 °C, VDD = 2.7 to 4.0 V) (2/3) Parameter Symbol Conditions MIN. MAX. Unit ASTB high-level width tASTH 0.3tCY ns Address setup time tADS 30 ns Address hold time tADH 10 ns Input time from address to data tADD1 (2 + 2n)tCY – 108 ns tADD2 (3 + 2n)tCY – 120 ns Output time from RD ↓ to address tRDAD 0 200 ns Input time from RD ↓ to data tRDD1 (2 + 2n)tCY – 148 ns tRDD2 (3 + 2n)tCY – 162 ns Read data hold time tRDH 0ns RD low-level width tRDL1 (1.5 + 2n)tCY – 40 ns tRDL2 (2.5 + 2n)tCY – 40 ns Input time from RD ↓ to WAIT↓ tRDWT1 tCY – 75 ns tRDWT2 tCY – 60 ns Input time from WR ↓ to WAIT↓ tWRWT tCY – 50 ns WAIT low-level width tWTL (0.5 + 2n)tCY + 10 (2 + 2n)tCY ns Write data setup time tWDS 60 ns Write data hold time tWDH 10 ns WR low-level width tWRL1 (1.5 + 2n)tCY – 30 ns Delay time from ASTB ↓ to RD↓ tASTRD 10 ns Delay time from ASTB ↓ to WR↓ tASTWR 2tCY – 30 ns Delay time from RD ↑ to ASTB↑ in tRDAST 0.8tCY – 30 1.2tCY ns external fetch Hold time from RD ↑ to address in tRDADH 0.8tCY – 30 1.2tCY + 60 ns external fetch Write data output time from RD ↑ tRDWD 40 ns Write data output time from WR ↓ tWRWD 20 120 ns Hold time from WR ↑ to address tWRADH 0.8tCY – 30 1.2tCY + 60 ns Delay time from WAIT ↑ to RD↑ tWTRD 0.5tCY 2.5tCY + 50 ns Delay time from WAIT ↑ to WR↑ tWTWR 0.5tCY 2.5tCY + 50 ns Caution TCY can only be used when the MIN. value is 0.4 µµµµµs. Remarks 1. tCY = TCY/4 2. n indicates the number of waits. 3. CL = 100 pF (CL is the load capacitance of the AD0 to AD7, A8 to A15, RD, WR, WAIT, and ASTB pins.) |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
