Datasheet

MC9S08QE128 Series Data Sheet, Rev. 7
Electrical Characteristics
Freescale Semiconductor24
Figure 16. Deviation of DCO Output Across V
DD
at 25°C
3.10 AC Characteristics
This section describes timing characteristics for each peripheral system.
3.10.1 Control Timing
Table 13. Control Timing
Num C Rating Symbol Min Typ
1
Max Unit
1D
Bus frequency (t
cyc
= 1/f
Bus
)
V
DD
≥ 1.8V
V
DD
> 2.1V
V
DD
> 2.4V
f
Bus
dc
—
—
—
10
20
25.165
MHz
2 D Internal low power oscillator period t
LPO
700 — 1300 μs
3 D External reset pulse width
2
t
extrst
100 — — ns
4 D Reset low drive t
rstdrv
34 x t
cyc
——ns
5D
BKGD/MS setup time after issuing background debug
force reset to enter user or BDM modes
t
MSSU
500 — — ns
6D
BKGD/MS hold time after issuing background debug
force reset to enter user or BDM modes
3
t
MSH
100 — — μs
-0.50%
-0.40%
-0.30%
-0.20%
-0.10%
0.00%
0.10%
0.20%
0.30%
0.40%
0.50%
2.1V 2.4V 2.7V 3.0V 3.3V 3.6V
VDD
% deviation