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ST75C520 Fiches technique(PDF) 8 Page - STMicroelectronics

No de pièce ST75C520
Description  HIGH SPEED FAX MODEM DATA PUMP
PDF  45 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST75C520 Fiches technique(HTML) 8 Page - STMicroelectronics

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III.3 - AC Electrical Characteristics
III.3.1 - Dual Port RAM Host Timing
Number
Description
Min.
Typ.
Max.
Unit
1
Address and Control Set-up Time
5
ns
2
SDTACK Acknowledge
20
ns
3
Data Set-up Time
10
ns
4
Address and Control Hold Time
0
ns
5
Data Hold Time
5
ns
6
SDTACK Hold Time
0
ns
7
Write Enable Low State
45
ns
8
Access Inhibition High State (see Note)
70
ns
9
Read Enable Low State
45
ns
10
Read Data Access
35
ns
11
SINTR Clear Delay
50
ns
12
Data Valid to Tristate
15
ns
Note :
A minimum delay of 70ns is required only from the rizing edge of NWRITE to the falling edge of the next selected NREAD or NWRITE.
19
4
NSCS
SA[0..6]
SR/NW
SD[0..7]
WRITE-CYCLE TIMING
Valid Address
READ-CYCLE TIMING
Valid Address
Valid Data
OUT
NSDS
NSDTACK
NSINTR
SR/NW (= NWRITE)
NSDS (= NREAD)
17
4
8
3
5
10
5
12
26
26
11
Valid Data
IN
ST75C520
8/45



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