56F8033 Datasheet, PDF (124/157 Pages) Freescale Semiconductor, Inc – 16-bit Digital Signal Controllers

10.4 Flash Memory Characteristics
Table 10-9 Flash Timing Parameters
Characteristic
Symbol
Min
Typ
Max
Unit
Program time¹
Tprog
20
—
40
μs
Erase time ²
Terase
20
—
—
ms
Mass erase time
Tme
100
—
—
ms
1. There is additional overhead which is part of the programming sequence. See the 56F802X and 56F803X Peripheral
Reference Manual for details.
2. Specifies page erase time. There are 512 bytes per page in the Program Flash memory.
10.5 External Clock Operation Timing
Table 10-10 External Clock Operation Timing Requirements¹
Characteristic
Symbol
Min
Typ
Max
Frequency of operation (external clock driver)²
f_osc
4
8
8
Clock Pulse Width³
t_PW
6.25
—
—
External Clock Input Rise Time⁴
t_rise
—
—
3
External Clock Input Fall Time⁵
t_fall
—
—
3
1. Parameters listed are guaranteed by design.
2. See Figure 10-4 for details on using the recommended connection of an external clock driver.
3. The chip may not function if the high or low pulse width is smaller than 6.25ns.
4. External clock input rise time is measured from 10% to 90%.
5. External clock input fall time is measured from 90% to 10%.
Unit
MHz
ns
ns
ns
External
Clock
90%
50%
10%
t_PW
t_PW
t_fall
Note: The midpoint is V_IL + (V_IH – V_IL)/2.
Figure 10-4 External Clock Timing
V_IH
90%
50%
10%
t_rise
V_IL
56F8033/56F8023 Data Sheet, Rev. 6
124
Freescale Semiconductor