3149 REAL TIME CLOCK (RTCX1CLK)

Symbol

Parameter

Condition

Min

Max

Unit

Notes

RTCX1 Input High Voltage

20

RTCX2 is

the output

RTCX1 Input Low Voltage

04

V

Battery Voltage

24

V

Lithium

Battery

Battery Current

3

m

A

31410 PCMCIA (RIO8-15)

Symbol

Parameter

Condition

Min

Max

Unit

Notes

Output High Voltage

Power

Switch

24

V

1 Card at a

DIR ENABLE REG CD

RST BUSY

LED

50 pF Load

GPI RSV (RSV is a reserved usage pin)

Output Low Voltage

04

V

DIR ENABLE REG CD

RST BUSY

LED

GPI RSV (RSV is a reserved usage pin)

31411 IEEE-1284 PORT (ECP MODE) AND (RIO16-31)

Symbol

Parameter

Condition

Min

Max

Unit

Notes

High-Level Output Current

(Note 4)

PD 70 SLIN STB AFD

14

mA

PE INIT ACK SLCT ERR BUSY

Low-Level Output Current

PD 70 SLIN STB AFD

14

mA

PE INIT ACK SLCT ERR BUSY

Note 4

When ECP mode 0 or ECP mode 2 and bit 1 of PCR is 0 for the parallel port are selected pins AFD INIT SLIN and STB are open drain supports 47 kX

resistors should be used The ECP IOs have over-voltage protection against being backdriven by higher external voltages when the IOs are at TRI-STATE The

IOs also isolate the NS486SXF power-rail from external voltages when the chip is powered down The maximum power-down leakage is 1 mA to ground

31412 TIMER

Symbol

Parameter

Condition

Min

Max

Unit

Notes

Output High Voltage

24

V

Output Low Voltage

04

V

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21