AN2187

7 Limitations summary

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7

Limitations summary

For more details, refer to the KNOWN LIMITATIONS chapter at the end of each datasheet

Note 1: refer to ELECTICAL CHARACTERISTICS chapter of the datasheet

Note 2: no limitation if LVD is enabled.

Note 3: Negative injection current on any of the analog input pins significantly reduces the

accuracy of ADC.

Note 4: When OSC1 or OSC2 is unconnected, main oscillator may overrun above the

maximum frequency guaranteed. The product may then operates in unsafe / undefined state.

Note 5: Vih(min) and Vil(max) on reset pin is 0.85xVdd and 0.16xVdd respectively.

Note 6: ICC 39-pulse is not available for 8/16k Flash devices only

Limitations

ST72F324

ST72F321

ST72F324B

ST72F321B

ST72F325

Internal RC Oscillator

Operation

✔✔

✔

Active Halt wake up by

external interrupt

XX

✔✔

✔

Negative Injection

current immunity on

XX

✔✔

✔

Over frequency on

OSC pad

✔✔

CSS functionality

XX

X

X

✔

Vih(min) / Vil(max)

0.7xVdd / 0.3xVdd

on reset pin

✔✔

✔

ICC mode entry with

39 pulses

✔✔

✔✔