mcf51jm128 Freescale Semiconductor, Inc, mcf51jm128 Datasheet - Page 32

• Manufacturer Part Number: mcf51jm128
• Description: Mcf51jm128 Coldfire Microcontroller Flexis 32-bit V1 Coldfire? Usb Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Preliminary Electrical Characteristics
2.11.1
32
1
2
3
4
Num
Typical values are based on characterization data at V
This is the shortest pulse guaranteed to be recognized as a reset pin request. Shorter pulses are not guaranteed to override
reset requests from internal sources.
This is the minimum pulse width guaranteed to pass through the pin synchronization circuitry. Shorter pulses may or may not
be recognized. In stop mode, the synchronizer is bypassed so shorter pulses can be recognized in that case.
Timing is shown with respect to 20% V
1
2
4
6
8
3
5
7
9
C
Control Timing
Bus frequency (t
Internal low-power oscillator period
External reset pulse width
(t
Reset low drive
Active background debug mode latch setup time
Active background debug mode latch hold time
IRQ pulse width
KBIPx pulse width
Port rise and fall time (load = 50 pF)
cyc
Asynchronous path
Synchronous path
Asynchronous path
Synchronous path
Slew rate control disabled (PTxSE = 0)
Slew rate control enabled (PTxSE = 1)
= 1/f
RESET PIN
Self_reset
cyc
)
Parameter
= 1/f
3
3
2
2
IRQ/KBIPx
IRQ/KBIPx
MCF51JM128 ColdFire Microcontroller, Rev. 0
Bus
2
DD
)
and 80% V
Figure 15. IRQ/KBIPx Timing
Table 17. Control Timing
Figure 14. Reset Timing
4
DD
DD
levels. Temperature range –40°C to 105°C.
= 5.0V, 25°C unless otherwise stated.
t
t
IHIL
ILIH
t
t
t
t
extrst
Symbol
Rise
ILIH,
ILIH,
t
t
t
MSSU
t
t
rstdrv
f
extrst
MSH
LPO
Bus
, t
t
t
IHIL
IHIL
Fall
1.5 x t
1.5 x t
66 x t
Min
700
100
500
100
100
100
dc
—
—
cyc
cyc
cyc
Typ
30
—
—
—
3
1
Freescale Semiconductor
1300
Max
24
—
—
—
—
—
—
MHz
Unit
μs
ns
ns
ns
ns
ns
ns
ns