mcf51qe128 Freescale Semiconductor, Inc, mcf51qe128 Datasheet - Page 21

• Manufacturer Part Number: mcf51qe128
• Description: Mcf51qe Flexis 32-bit Coldfire? V1 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

3.10
This section describes timing characteristics for each peripheral system.
3.10.1
Freescale Semiconductor
Num
1
2
3
4
5
6
7
C
D
D
D
D
D
D
D
AC Characteristics
Control Timing
Bus frequency (t
Internal low power oscillator period
External reset pulse width
Reset low drive
BKGD/MS setup time after issuing background debug
force reset to enter user or BDM modes
BKGD/MS hold time after issuing background debug
force reset to enter user or BDM modes
IRQ pulse width
Figure 13. Deviation of DCO Output from Trimmed Frequency (50.33 MHz, 25°C)
Asynchronous path
Synchronous path
V
V
DD
DD
≤ 2.1V
> 2.1V
MCF51QE128 Series Advance Information Data Sheet, Rev. 4
cyc
= 1/f
4
2
Rating
Bus
2
)
Table 12. Control Timing
TBD
3
t
Symbol
ILIH,
t
t
t
MSSU
t
t
extrst
rstdrv
f
MSH
LPO
Bus
t
IHIL
34 x t
2 x t
Min
700
100
500
100
100
dc
dc
cyc
cyc
Typ
Electrical Characteristics
—
—
—
—
—
—
—
—
—
1
25.165
1300
Max
10
—
—
—
—
—
—
Unit
MHz
μs
ns
ns
ns
μs
ns
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