DocID024511 Rev 2

17/31

ST8034HN, ST8034HC

Electrical characteristics

Table 9. Clock circuits

Symbol

Parameter

Min.

Typ.

Max.

Unit

Internal oscillator

Internal oscillator frequency

Shutdown mode

100

150

200

kHz

Active state

2

2.7

3.2

MHz

Crystal oscillator (XTAL1 and XTAL2 pins)

External capacitances

XTAL1 and XTAL2 to GND

(according to the crystal or

resonator specification)

15

pF

External crystal frequency

Card clock reference,

crystal oscillator

226

MHz

External clock frequency

External clock on XTAL1

0.032

26

MHz

External clock frequency rise time External clock on XTAL1

10

ns

External clock frequency fall time External clock on XTAL1

10

ns

Input voltage low

Crystal oscillator

-0.3

V

External clock on XTAL1

-0.3

0.3

Input voltage high

Crystal oscillator

V

External clock on XTAL1

0.7

+ 0.3

Table 10. Protection characteristics

Symbol

Parameter

Min.

Typ.

Max.

Unit

I/O pin

-15

15

mA

CLK pin

-70

70

RST pin

-20

20

Limit and shutdown card supply

current

90

120

150

mA

Shutdown junction temperature

150

°C

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