STR710F STMICROELECTRONICS [STMicroelectronics], STR710F Datasheet - Page 38

• Manufacturer Part Number: STR710F
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

STR71xF - ELECTRICAL CHARACTERISTICS
2.10 External Memory Bus Timing
V
The tables below use a variable which is derived from the EMI_BCONn registers (described in
the STR71x Reference Manual) and represents the special characteristics of the programmed
memory cycle.
Table 21. EMI Read Operation
See
Table 22. EMI Write Operation
See
38/49
Symbol
Symbol
Symbol
33
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
MCLK
RCR
RDH
WWT
t
RDS
RAS
RAH
RAT
RRT
WCR
t
WDS
WDH
WAS
WAH
WAT
RP
WP
t
= 3.3 ± 10%, T
C
Figure
Figure
Read to CSn Removal Time
Read Pulse Time
Read Data Setup Time
Read Data Hold Time
Read Address Setup Time
Read Address Hold Time
Read Address Turnaround Time
RDn Turnaround Time
WEn to CSn Removal Time
Write Pulse Time
Write Data Setup Time
Write Data Hold Time
Write Address Setup Time
Write Address Hold Time
Write Address Turnaround Time
WEn Turnaround Time
CPU clock period
Memory cycle time wait states
10,
14,
Figure
Figure
A
Parameter
Parameter
Parameter
= -40 / 85 °C unless otherwise specified.
11,
15,
Figure
Figure 16
12and
and
Figure 13
Figure 17
Test Conditions
Test Conditions
for related timing diagrams.
for related timing diagrams.
t
MCLK
x (1 + [C_LENGTH])
Min
Min
1 / f
Value
MCLK
1.3*t
1.3*t
Value
t
t
Value
t
t
MCLK
MCLK
Typ
MCLK
MCLK
Typ
t
3
3
3
3
t
C
3
3
3
3
MCLK
C
MCLK
Max
Max
Unit
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns