Datasheet

ST72321Rx ST72321ARx ST72321Jx
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EMC CHARACTERISTICS (Cont’d)
12.7.2 Electro Magnetic Interference (EMI)
Based on a simple application running on the
product (toggling 2 LEDs through the I/O ports),
the product is monitored in terms of emission. This
emission test is in line with the norm SAE J 1752/
3 which specifies the board and the loading of
each pin.
Notes:
1. Data based on characterization results, not tested in production.
2. Refer to Application Note AN1709 for data on other package types.
Symbol Parameter Conditions
Monitored
Frequency Band
Max vs. [f
OSC
/f
CPU
]
1
Unit
8/4MHz 16/8MHz
S
EMI
Peak level
V
DD
=5V, T
A
=+25°C,
LQFP64 10x10 package
conforming to SAE J 1752/3
0.1MHz to 30MHz 15 20
dBμV30MHz to 130MHz 20 27
130MHz to 1GHz 7 12
SAE EMI Level 2.5 3 -
S
EMI
Peak level
60K ROM Devices:
V
DD
=5V, T
A
=+25°C,
LQFP64 package
conforming to SAE J 1752/3
0.1MHz to 30MHz 15 20
dBμV30MHz to 130MHz 20 27
130MHz to 1GHz 7 12
SAE EMI Level 2.5 3 -
S
EMI
Peak level
8/16/32K ROM devices:
V
DD
=5V, T
A
=+25°C,
LQFP44 10x10 package
conforming to SAE J 1752/3
0.1MHz to 30MHz 17 21
dBμV30MHz to 130MHz 24 30
130MHz to 1GHz 18 23
SAE EMI Level 3 3.5 -