LQFP100 datasheet(75/116 Pages) STMICROELECTRONICS

75 / 116 page

DocID14619 Rev 13

75/116

SPC560B40x/50x, SPC560C40x/50x

Package pinouts and signal descriptions

115

3.22

Slow external crystal oscillator (32 kHz) electrical

characteristics

The device provides a low power oscillator/resonator driver.

Figure 15. Crystal oscillator and resonator connection scheme

VIH

SR P

Input high level CMOS



(Schmitt Trigger)

Oscillator bypass mode

0.65VDD

—VDD+0.4

VIL

SR P

Input low level CMOS



(Schmitt Trigger)

Oscillator bypass mode

0.4

—

0.35VDD

VDD = 3.3 V ± 10% / 5.0 V ± 10%, TA = 40 to 125 °C, unless otherwise specified

Stated values take into account only analog module consumption but not the digital contributor (clock tree and enabled

peripherals)

Table 38. Fast external crystal oscillator (4 to 16 MHz) electrical characteristics (continued)

Symbol

Parameter

Conditions(1)

Value

Unit

Min

Typ

Max

OSC32K_XTAL

OSC32K_EXTAL

DEVICE

OSC32K_XTAL

OSC32K_EXTAL

DEVICE

Note: OSC32K_XTAL/OSC32K_EXTAL must not be directly used to drive external circuits.

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