ST52T400 datasheet(73/94 Pages) STMICROELECTRONICS

73 / 94 page

ST52T400/T440/E440/T441

73/94

Table 11.1 Voltage Characteristics

Symbol

Ratings

Maximum Value

Unit

VDD-VSS

Supply voltage

6.5

SSA-VSS|

Variation between digital and analog ground pins

VIN

Input voltage on Vpp

VSS-0.3 to 13

Input voltage on any other pin 1) & 2)

VSS-0.3 to VDD+0.3

VDESD

Electro-static discharge voltage

4000

Table 11.2 Current Characteristics

Symbol

Ratings

Maximum Value

Unit

IVDD

Total current in VDD power lines (source)

100

IVSS

Total current in VSS ground lines (sink)

100

IIO

Output current sunk by any standard I/O and control pin

Output current source by any I/Os and control pin

-25

IINJ(PIN)

Injected current on VPP pin

±5

Injected current on RESET pin

±5

Injected current on OSCin and OSCout pins

±5

Injected current on any other pin 4)

±5

ΣI

INJ(PIN)

Total Injected current (sum of all I/O and control pins) 4)

±20

Table 11.3 Thermal Characteristics

Symbol

Ratings

Maximum Value

Unit

TSTG

Storage temperature range

-65 to +150

°C

Maximum junction temperature

150

°C

Notes:

1. Connecting RESET and I/O Pins directly to VDD or VSS could damage the device if the unintentional internal reset is generated

or an unexpected change of I/O configuration occurs (for example, due to the corrupted program counter). In order to guarantee

safe operation, this connection has to be performed via a pull-up or pull-down resistor (typical: 4.7k

Ω for RESET, 10K Ω for I/Os).

Unused I/O pins must be tied in the same manner to VDD or VSS according to their reset configuration.

2. When the current limitation is not possible, the VIN absolute maximum rating must be respected, otherwise refer to I INJ(PIN)

specification. A positive injection is induced by VIN>VDD while a negative injection is induced by VIN<VSSto I INJ(PIN) specification.

A positive injection is VIN>VDD while a negative injection is induced by VIN<VSS.

3. All power (VDD) and ground (VSS) lines must always be connected to the external supply.

4. When several inputs are submitted to a current injection, the maximum

ΣI

INJ(PIN) is the absolute sum of the positive and negative

injected currents (instantaneous values).

ST52T400 Datasheet(PDF) 73 Page - STMicroelectronics

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