ST72321BR9 STMicroelectronics, ST72321BR9 Datasheet - Page 154

• Manufacturer Part Number: ST72321BR9
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72321BR9

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• Four Power Saving Modes: Halt, Active-Halt, Wait and Slow
• Main Clock Controller With: Real time base, Beep and Clock-out capabilities
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input on one timer, PWM and pulse generator modes
• 8-bit Pwm Auto-reload Timer With: 2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector

ST72321BRx, ST72321BARx ST72321BJx, ST72321BKx
EMC CHARACTERISTICS (Cont’d)
12.7.3 Absolute Maximum Ratings (Electrical
Sensitivity)
Based on two different tests (ESD and LU) 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 application note AN1181.
Absolute Maximum Ratings
Notes:
1. Data based on characterization results, not tested in production.
12.7.3.2 Static Latch-Up
■
Electrical Sensitivities
154/187
V
V
LU: 2 complementary static tests are required
on 6 parts to assess the latch-up performance.
A supply overvoltage (applied to each power
Symbol
Symbol
ESD(HBM)
ESD(MM)
LU
Electro-static discharge voltage
(Human Body Model)
Electro-static discharge voltage
(Machine Model)
Static latch-up class
Parameter
Ratings
T
T
T
conforming to JESD 78
A
A
A
=+25°C
=+25°C
=+125°C
12.7.3.1 Electro-Static Discharge (ESD)
Electro-Static Discharges (a positive then a nega-
tive pulse separated by 1 second) are applied to
the pins of each sample according to each pin
combination. The sample size depends on the
number of supply pins in the device (3 parts*(n+1)
supply pin). Two models can be simulated: Human
Body Model and Machine Model. This test con-
forms to the JESD22-A114A/A115A standard.
supply pin) and a current injection (applied to
each input, output and configurable I/O pin) are
performed on each sample. This test conforms
to the EIA/JESD 78 IC latch-up standard.
Conditions
Conditions
Maximum value
2000
200
II level A
Class
1)
1)
Unit
V