MCF51JU128VHS FREESCALE [Freescale Semiconductor, Inc], MCF51JU128VHS Datasheet - Page 18

• Manufacturer Part Number: MCF51JU128VHS
• Description: MCF51JU128
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Nonswitching electrical specifications
2. V
3. Specified according to Annex D of IEC Standard 61967-2, Measurement of Radiated Emissions—TEM Cell and Wideband
5.2.7 Designing with radiated emissions in mind
To find application notes that provide guidance on designing your system to minimize
interference from radiated emissions:
5.2.8 Capacitance attributes
5.3 Switching electrical specifications
1. When the Mini-FlexBus is enabled, its clock frequency is always the same as the bus clock frequency.
2. A maximum frequency of 25 MHz for the LPTMR in VLPR mode is possible when the LPTMR is configured for pulse
18
1. Go to http://www.freescale.com.
2. Perform a keyword search for “EMC design.”
f
FB_CLK
FB_CLK
Symbol
SYS_USB
TEM Cell Method.
counting mode and is driven externally via the LPTMR_ALT1, LPTMR_ALT2, or LPTMR_ALT3 pin.
f
f
Symbol
LPTMR
LPTMR
f
f
f
f
C
C
DD
SYS
BUS
SYS
BUS
IN_A
IN_D
= 3 V, T
System and core clock
System and core clock when USB in operation
Bus clock
Mini-FlexBus clock
LPTMR clock
System and core clock
Bus clock
Mini-FlexBus clock
LPTMR clock
Description
A
Input capacitance: analog pins
Input capacitance: digital pins
Description
= 25 °C, f
OSC
2
= 32 kHz (crystal), f
Table 8. Device clock specifications
MCF51JU128 Data Sheet, Rev. 4, 01/2012.
Table 7. Capacitance attributes
BUS
Normal run mode
= 24 MHz
VLPR mode
Min.
20
—
—
—
—
—
—
—
—
Min.
—
—
Max.
50
25
25
25
25
—
2
1
1
Freescale Semiconductor, Inc.
Max.
7
7
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Unit
Unit
Notes
pF
pF
1
1