Datasheet

Specifications
MC56F8006/MC56F8002 Digital Signal Controller, Rev. 4
Freescale Semiconductor 53
8.7 Flash Memory Characteristics
8.8 External Clock Operation Timing
Figure 21. External Clock Timing
Table 23. Flash Timing Parameters
Characteristic Symbol Min Typ Max Unit
Program time
1
1
There is additional overhead that is part of the programming sequence. See the MC56F8006 Peripheral Reference
Manual for detail.
tprog 20 — 40 s
Erase time
2
2
Specifies page erase time. There are 512 bytes per page in the program flash memory.
terase 20 — — ms
Mass erase time
tme 100 — — ms
Table 24. External Clock Operation Timing Requirements
1
1
Parameters listed are guaranteed by design.
Characteristic Symbol Min Typ Max Unit
Frequency of operation (external clock driver)
2
2
See Figure 21 for detail on using the recommended connection of an external clock driver.
f
osc
——64 MHz
Clock pulse width
3
3
The chip may not function if the high or low pulse width is smaller than 6.25 ns.
t
PW
6.25 — — ns
External clock input rise time
4
4
External clock input rise time is measured from 10% to 90%.
t
rise
—— 3ns
External clock input fall time
5
5
External clock input fall time is measured from 90% to 10%.
t
fall
—— 3ns
Input high voltage overdrive by an external clock V
ih
0.85V
DD
——V
Input high voltage overdrive by an external clock V
il
——0.3V
DD
V
90%
50%
10%
90%
50%
10%
External
Clock
t
PW
t
PW
t
fall
t
rise
V
IL
V
IH
Note: The midpoint is V
IL
+ (V
IH
– V
IL
)/2.