ST8034HC datasheet(17/31 Pages) STMICROELECTRONICS

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DocID024511 Rev 2

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ST8034HN, ST8034HC

Electrical characteristics

Table 9. Clock circuits

Symbol

Parameter

Test conditions(1)

Min.

Typ.

Max.

Unit

Internal oscillator

fOSC(INT)LOW

Internal oscillator frequency

Shutdown mode

100

150

200

kHz

fOSC(INT)

Active state

2.7

3.2

MHz

Crystal oscillator (XTAL1 and XTAL2 pins)

CEXT

External capacitances

XTAL1 and XTAL2 to GND

(according to the crystal or

resonator specification)

fXTAL

External crystal frequency

Card clock reference,

crystal oscillator

226

MHz

fEXT

External clock frequency

External clock on XTAL1

0.032

MHz

tR(fEXT)

External clock frequency rise time External clock on XTAL1

tF(fEXT)

External clock frequency fall time External clock on XTAL1

VIL

Input voltage low

Crystal oscillator

-0.3

0.3 VDD

External clock on XTAL1

-0.3

0.3

VDD(INTF)

VIH

Input voltage high

Crystal oscillator

0.7 VDD

VDD + 0.3

External clock on XTAL1

0.7

VDD(INTF)

+ 0.3

1. TA = 25 °C, VDD = 3.3 V, VDDP = 5 V, VDD(INTF) = 3.3 V, fXTAL = 10 MHz, unless otherwise noted.

Table 10. Protection characteristics

Symbol

Parameter

Test conditions(1)

Min.

Typ.

Max.

Unit

IOLIM

Output current limit(2)

I/O pin

-15

CLK pin

-70

RST pin

-20

ISD(VCC)

Limit and shutdown card supply

current

VCC pin

120

150

TSD

Shutdown junction temperature

150

°C

1. TA = 25 °C, VDD = 3.3 V, VDDP = 5 V, VDD(INTF) = 3.3 V, fXTAL = 10 MHz, unless otherwise noted.

2. All card contacts are protected against short-circuit to any other card contact.

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