psf21911 ETC-unknow, psf21911 Datasheet - Page 139

• Manufacturer Part Number: psf21911
• Description: Isdn Echocancellation Circuit Terminal Applications Iec-q
• Manufacturer: ETC-unknow

Microprocessor Interface Timing
C
Parameter
ALE pulse width
Address setup time to ALE
Address hold time from ALE
Address latch setup time to WR, RD
Address setup time
Address hold time
ALE guard time
DS delay after R/W setup
RD pulse width
Data output delay from RD
Data float from RD
RD control interval
W pulse width
Data setup time to W x CS
Data hold time W x CS
W control interval
Semiconductor Group
Load
= 50pF
139
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
AA
AL
LA
ALS
AS
AH
AD
DSD
RR
RD
DF
RI
WW
DW
WD
WI
Electrical Characteristics
Limit Values
min.
60
20
10
0
35
0
70
0
280
70
280
170
10
70
max.
280
25
PSB 21911
PSF 21911
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
11.97