ST72C334J4TAE STMicroelectronics, ST72C334J4TAE Datasheet - Page 125

• Manufacturer Part Number: ST72C334J4TAE
• Description: 8-bit MCU for automotive with single voltage Flash/ROM memory, ADC, 16-bit timers, SPI, SCI interfaces
• Manufacturer: STMicroelectronics

EMC CHARACTERISTICS (Cont’d)
15.7.2 Absolute Electrical Sensitivity
Based on three different tests (ESD, LU and DLU)
using specific measurement methods, the product
is stressed in order to determine its performance in
terms of electrical sensitivity. For more details, re-
fer to the AN1181 ST7 application note.
15.7.2.1 Electrostatic Discharge (ESD)
Electrostatic Discharges (3 positive then 3 nega-
tive pulses separated by 1 second) are applied to
the pins of each sample according to each pin
combination. The sample size depends of the
number of supply pins of the device (3 parts*(n+1)
supply pin). Two models are usually simulated:
Human Body Model and Machine Model. This test
conforms to the JESD22-A114A/A115A standard.
See
Human Body Model Test Sequence
– C
– S1 switches position from generator to R.
– A discharge from C
– S2 must be closed 10 to 100ms after the pulse
Absolute Maximum Ratings
Figure 74. Typical Equivalent ESD Circuits
Notes:
1. Data based on characterization results, not tested in production.
ator.
to the ST7 occurs.
delivery period to ensure the ST7 is not left in
charge state. S2 must be opened at least 10ms
prior to the delivery of the next pulse.
V
HIGH VOLTAGE
V
Symbol
GENERATOR
ESD(HBM)
ESD(MM)
L
Figure 74
is loaded through S1 by the HV pulse gener-
PULSE
Electrostatic discharge voltage
(Human Body Model)
Electrostatic discharge voltage
(Machine Model)
and the following test sequences.
L
S1
through R (body resistance)
C
L
=100pF
Ratings
HUMAN BODY MODEL
R=1500Ω
ST7
ST72334xx-Auto, ST72314xx-Auto, ST72124Jx-Auto
S2
Machine Model Test Sequence
– C
– S1 switches position from generator to ST7.
– A discharge from C
– S2 must be closed 10 to 100ms after the pulse
– R (machine resistance), in series with S2, en-
ator.
delivery period to ensure the ST7 is not left in
charge state. S2 must be opened at least 10ms
prior to the delivery of the next pulse.
sures a slow discharge of the ST7.
HIGH VOLTAGE
GENERATOR
L
Conditions
is loaded through S1 by the HV pulse gener-
T
T
PULSE
A
A
=+25°C
=+25°C
S1
L
to the ST7 occurs.
C
L
=200pF
Maximum value
MACHINE MODEL
3000
ST7
400
1)
125/150
Unit
V
S2