SPC560P34L1 datasheet(65/103 Pages) STMICROELECTRONICS

65 / 103 page

SPC560P34L1, SPC560P34L3, SPC560P40L1, SPC560P40L3

Electrical characteristics

Doc ID 16100 Rev 7

65/103

3.11

Main oscillator electrical characteristics

The SPC560P34/SPC560P40 provides an oscillator/resonator driver.

IRMSFST

Root medium square

I/O current for FAST

configuration

CL = 25 pF, 40 MHz

VDD = 5.0 V ± 10%,

PAD3V5V = 0

——

CL = 25 pF, 64 MHz

—

CL = 100 pF, 40 MHz

—

CL = 25 pF, 40 MHz

VDD = 3.3 V ± 10%,

PAD3V5V = 1

——

CL = 25 pF, 64 MHz

—

CL = 100 pF, 40 MHz

—

IAVGSEG

Sum of all the static

I/O current within a

supply segment

VDD = 5.0 V ± 10%, PAD3V5V = 0

—

VDD = 3.3 V ± 10%, PAD3V5V = 1

—

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

Stated maximum values represent peak consumption that lasts only a few ns during I/O transition.

Table 24.

I/O consumption (continued)

Symbol

Parameter

Conditions(1)

Value

Unit

Min

Typ

Max

Table 25.

Main oscillator output electrical characteristics (5.0 V,

NVUSRO[PAD3V5V] = 0)

Symbol

Parameter

Conditions

Value

Unit

Min

Max

fOSC

SR — Oscillator frequency

MHz

—

P Transconductance

6.5

mA/V

VOSC

—

T Oscillation amplitude on XTAL pin

—

tOSCSU — T Start-up time

(1),(2)

The start-up time is dependent upon crystal characteristics, board leakage, etc. High ESR and excessive

capacitive loads can cause long start-up time.

Value captured when amplitude reaches 90% of XTAL

8—

XTAL load capacitance(3)

This value is determined by the crystal manufacturer and board design. For 4 MHz to 40 MHz crystals

specified for this oscillator, load capacitors should not exceed these limits.

4MHz

T8 MHz

T12 MHz

T16 MHz

T20 MHz

T40 MHz

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