dp8344b National Semiconductor Corporation, dp8344b Datasheet - Page 101

• Manufacturer Part Number: dp8344b
• Description: Biphase Communications Processor?bcp
• Manufacturer: National Semiconductor Corporation

5 0 Device Specifications
Note 1 All parameters are individually tested and guaranteed Interpreting this data by numerically adding two or more parameters to create a new timing
specification may lead to invalid results
t
t
t
t
t
t
t
ACC-I
H-IA-I
PD-ICLK-IA
PD-IA-ICLK
PD-IAz-ICLK
SU-I-ICLK
H-I-ICLK
Symbol
ID
1
2
3
4
5
6
Instruction Memory Read Time
IA Invalid to I Invalid
ICLK Rising to IA Invalid
Next IA Valid before ICLK Falling
IA Invalid before ICLK Falling
I Valid before ICLK Rising
I Invalid before ICLK Falling
TABLE 5-5 Instruction Memory Read Timing (Note 1)
Parameter
FIGURE 5-5 Instruction Memory Timing
(Continued)
(a) Instruction Memory Read Timing
(b) Instruction ICLK Timing
101
(n
IW
Formula
a
T
T
T
1)T
H
L
L
a
a
a
a
T
L
a
TL F 9336 – A9
TL F 9336 – 54
b
b
Min
20
0
13
12
b
Max
17
0
19
Units
ns
ns
ns
ns
ns
ns
ns