mcf51cn128 Freescale Semiconductor, Inc, mcf51cn128 Datasheet - Page 26

• Manufacturer Part Number: mcf51cn128
• Description: Mcf51cn128 Coldfire Microcontroller Cover Mcf51cn128
• Manufacturer: Freescale Semiconductor, Inc

Electrical Characteristics
3.11.4
3.12
This section describes timing characteristics for each peripheral system.
3.12.1
26
Num
1
2
3
4
5
Num
E10
E11
E12
E13
E14
E15
C
D
D
D
D
D
AC Characteristics
MII Serial Management Timing Specifications
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
C
D
D
D
D
D
D
V
2.7 V > V
2.1 V > V
DD
> 2.7 V
MDC cycle time
MDC pulse width
MDC to MDIO output valid
MDIO input to MDC setup
MDC to MDIO output invalid
MDIO input to MDC hold
MDIO (Output)
MDC (Output)
MDIO (Input)
DD
DD
Figure 18. MII Serial Management Channel TIming Diagram
> 2.1 V
> 1.8 V
Table 16. MII Serial Management Channel Signal Timing
cyc
MCF51CN128 ColdFire Microcontroller Data Sheet, Rev. 4
= 1/f
Rating
Bus
2
Characteristic
)
Table 17. Control Timing
E11
E12
E10
E11
E14
Symbol
Valid Data
Valid Data
t
t
t
MSSU
t
rstdrv
f
extrst
LPO
Bus
Symbol
t
MDC
—
—
—
—
—
E15
E13
34 x t
Min
700
100
500
dc
dc
dc
Min
400
cyc
40
30
15
—
5
Typ
—
—
—
—
—
—
—
Max
375
Freescale Semiconductor
60
—
—
—
—
1
50.33
1300
Max
40
20
—
—
—
% t
Unit
ns
ns
ns
ns
ns
MDC
Unit
MHz
μs
ns
ns
ns