参数资料
型号: ST72621L4T1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
封装: TQFP-44
文件页数: 11/134页
文件大小: 815K
代理商: ST72621L4T1
ST7262
108/134
EMC CHARACTERISTICS (Cont’d)
12.7.2 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.
12.7.2.1 Electro-Static Discharge (ESD)
Electro-Static Discharges (1 positive then 1 nega-
tive pulse 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). The Human Body Model is simulated.
This test conforms to the JESD22-A114A stand-
ard. See Figure 57 and the following test sequenc-
es.
Human Body Model Test Sequence
–CL is loaded through S1 by the HV pulse gener-
ator.
– S1 switches position from generator to R.
– A discharge from CL through R (body resistance)
to the ST7 occurs.
– S2 must be closed 10 to 100ms after the pulse
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.
Absolute Maximum Ratings
Figure 57. Typical Equivalent ESD Circuits
Notes:
1. Data based on characterization results, not tested in production.
Symbol
Ratings
Conditions
Maximum value 1) Unit
VESD(HBM)
Electro-static discharge voltage
(Human Body Model)
TA=+25°C
2000
V
ST7
S2
R=1500
S1
HIGH VOLTAGE
CL=100pF
PULSE
GENERATOR
HUMAN BODY MODEL
1
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