SAB-C505C-4E 查看數據表（PDF） - Infineon Technologies
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SAB-C505C-4E Datasheet PDF : 88 Pages
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C505 / C505C
C505A / C505CA
AC Characteristics (20 MHz, 0.5 Duty Cycle, cont’d)
External Data Memory Characteristics
Parameter
RD pulse width
WR pulse width
Address hold after ALE
RD to valid data in
Data hold after RD
Data float after RD
ALE to valid data in
Address to valid data in
ALE to WR or RD
Address valid to WR
WR or RD high to ALE high
Data valid to WR transition
Data setup before WR
Data hold after WR
Address float after RD
Symbol
Limit Values
Unit
20 MHz clock
Variable Clock
0.5 Duty Cycle 1/CLP = 2 MHz to 20 MHz
min. max. min.
max.
tRLRH
120
–
3 CLP - 30 –
ns
tWLWH
120
–
3 CLP - 30 –
ns
tLLAX2
35
–
CLP - 15
–
ns
tRLDV
–
75
–
5/2 CLP- 50 ns
tRHDX
0
–
0
–
ns
tRHDZ
–
38
–
CLP - 12
ns
tLLDV
–
150 –
4 CLP - 50 ns
tAVDV
–
150 –
9/2 CLP - 75 ns
tLLWL
60
90
3/2 CLP - 15 3/2 CLP + 15 ns
tAVWL
70
–
2 CLP - 30 –
ns
tWHLH
10
40
CLP/2 - 15 CLP/2 + 15 ns
tQVWX
5
–
CLP/2 - 20 –
ns
tQVWH
125
–
7/2 CLP - 50 –
ns
tWHQX
5
–
CLP/2 - 20 –
ns
tRLAZ
–
0
–
0
ns
External Clock Drive Characteristics
Parameter
Oscillator period
High time
Low time
Rise time
Fall time
Oscillator duty cycle
Symbol
Limit Values
Unit
Variable Clock
Freq. = 2 MHz to 20 MHz
min.
max.
CLP 50
500
ns
TCLH 15
TCLL 15
tR
–
tF
–
DC
0.5
CLP-TCLL
ns
CLP-TCLH
ns
10
ns
10
ns
0.5
–
Data Sheet
72
08.00
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