ak2548 AKM Semiconductor, Inc., ak2548 Datasheet - Page 14

• Manufacturer Part Number: ak2548
• Description: 7 Channel E1 Transceiver - Asahi Kasei Microsystems
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
AC CHARACTERISTICS(Parallel Port)
Parameter
Read/Write Cycle
Motorola Mode
Address Setup Time
Address Hold Time
AS to DS Delay Time
DS to AS Delay Time
Read Data Delay Time
Read Data Hold Time
R/W Setup Time
R/W Hold Time
CS Setup Time
CS Hold Time
DS to Write Data Setup Time
DS to Write Data Hold Time
DS Pulse Width
AS Pulse Width
Address Invalid to DS Delay Time
Intel Mode
Address Setup Time
Address Hold Time
ALE to WR Delay Time
WR to ALE Delay Time
RD to ALE Delay Time
Read Data Delay Time
Read Data Hold Time
CS Setup Time
CS Hold Time
DS to Write Data Setup Time
DS to Write Data Hold Time
RD Pulse Width
WR Pulse Width
ALE Pulse Width
Address Invalid to RD Delay Time
Notes) CL= 50pF on AD0-AD7. All of the timing is specified at 50%VDD.
C0028-E-00
Symbol
tcyc
t10
t11
t12
t13
t14
t15
t21
t22
t23
t24
t25
t26
t27
t28
t29
t30
t31
t32
t33
t34
t35
t1
t2
t3
t4
t5
t6
t7
t8
t9
Min
250
100
100
100
10
10
20
20
10
10
10
15
40
20
20
10
10
20
20
20
10
15
40
20
20
—
—
—
—
0
0
14
Typ
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Max
—
—
—
—
40
20
—
—
—
—
—
—
—
—
—
—
—
—
—
—
40
20
—
—
—
—
—
—
—
—
Units Condition
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
[AK2548]
1999/9