MPC5604B/C Microcontroller Data Sheet, Rev. 9
Electrical characteristics
Freescale Semiconductor
58
4.11.3
Start-up/Switch-off timings
4.12
Electromagnetic compatibility (EMC) characteristics
Susceptibility tests are performed on a sample basis during product characterization.
4.12.1
Designing hardened software to avoid noise problems
EMC characterization and optimization are performed at component level with a typical application environment and simplified
MCU software. It should be noted that good EMC performance is highly dependent on the user application and the software in
particular.
Therefore it is recommended that the user apply EMC software optimization and prequalification tests in relation with the EMC
level requested for his application.
Software recommendations:
The software flowchart must include the management of runaway conditions such as:
— Corrupted program counter
— Unexpected reset
— Critical data corruption (control registers...)
Prequalification trials:
Most of the common failures (unexpected reset and program counter corruption) can be
reproduced by manually forcing a low state on the reset pin or the oscillator pins for 1 second.
To complete these trials, ESD stress can be applied directly on the device. When unexpected behavior is detected, the
software can be hardened to prevent unrecoverable errors occurring.
4.12.2
Electromagnetic interference (EMI)
The product is monitored in terms of emission based on a typical application. This emission test conforms to the IEC 61967-1
standard, which specifies the general conditions for EMI measurements.
Table 32. Start-up time/Switch-off time
Symbol
C
Parameter
Conditions1
1 V
DD = 3.3 V ± 10% / 5.0 V ± 10%, TA = 40 to 125 °C, unless otherwise specified
Value
Unit
Min
Typ
Max
TFLARSTEXIT CC T Delay for Flash module to exit reset mode
Code Flash
—
125
s
T
Data Flash
—
125
TFLALPEXIT
CC T Delay for Flash module to exit low-power
mode
Code Flash
—
0.5
T
Data Flash
—
0.5
TFLAPDEXIT
CC T Delay for Flash module to exit power-down
mode
Code Flash
—
30
T
Data Flash
—
30
TFLALPENTRY CC T Delay for Flash module to enter low-power
mode
Code Flash
—
0.5
T
Data Flash
—
0.5
TFLAPDENTRY CC T Delay for Flash module to enter power-down
mode
Code Flash
—
1.5
T
Data Flash
—
1.5