ST72F324BJ STMICROELECTRONICS [STMicroelectronics], ST72F324BJ Datasheet - Page 137

• Manufacturer Part Number: ST72F324BJ
• Description: 8-bit MCU, 3.8 to 5.5 V operating range with 8 to 32 Kbyte Flash/ROM, 10-bit ADC, 4 timers, SPI, SCI
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST72324B
12.1.5
12.2
12.2.1
Pin input voltage
The input voltage measurement on a pin of the device is described in
Figure 63. Pin input voltage
Absolute maximum ratings
Stresses above those listed as “absolute maximum ratings” may cause permanent damage
to the device. This is a stress rating only and functional operation of the device under these
conditions is not implied. Exposure to maximum rating conditions for extended periods may
affect device reliability.
Voltage characteristics
Table 82.
1. Directly connecting the RESET and I/O pins to V
2. I
|∆V
internal reset is generated or an unexpected change of the I/O configuration occurs (for example, due to a
corrupted program counter). To guarantee safe operation, this connection has to be done through a pull-up
or pull-down resistor (typical: 4.7kΩ for RESET, 10kΩ for I/Os). For the same reason, unused I/O pins
must not be directly tied to V
cannot be respected, the injection current must be limited externally to the I
injection is induced by V
pads, there is no positive injection current, and the corresponding V
respected.
DDx
|V
INJ(PIN)
V
V
V
V
SSA
Symbol
V
ESD(HBM)
DD
PP
ESD(MM)
| and |∆V
IN
(1)(2)
- V
- V
- V
must never be exceeded. This is implicitly ensured if V
SS
SSx
SS
Voltage characteristics
SSx
|
| Variations between different digital power pins
Supply voltage
Programming voltage
Input voltage on true open drain pin
Input voltage on any other pin
Variations between digital and analog ground pins
Electrostatic discharge voltage (human body model)
Electrostatic discharge voltage (machine model)
IN
> V
DD
DD
or V
while a negative injection is induced by V
SS
.
V
IN
Ratings
DD
or V
SS
ST7 pin
could damage the device if an unintentional
IN
maximum is respected. If V
IN
maximum must always be
IN
INJ(PIN)
< V
Electrical characteristics
SS
. For true open-drain
value. A positive
Figure
Maximum value Unit
see
V
SS
V
V
SS
Section 12.8.3 on
DD
- 0.3 to 6.5
page 152
6.5
13
- 0.3 to
50
50
63.
+ 0.3
IN
maximum
137/188
mV
V