AT83C24B-PRTIL datasheet(26/42 Pages) ATMEL

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4234F–SCR–10/05

AT83C24

Reset value = 0x00000001

Table 12. STATUS (Status Byte)

CC8

CC4

CARDIN

VCARDOK

VCARD_INT

CRST

CIO

Bit Number

Bit Mnemonic

Description

CC8

Card CC8

This bit provides the actual level on the CC8 pin when read.

The reset value is 0.

CC4

Card CC4

This bit provides the actual level on the CC4 pin when read.

The reset value is 0.

CARDIN

Card Presence Status

This bit is set when a card is detected.

It is cleared otherwise.

VCARD_OK

Card Voltage Status

This bit is set by the DCDC when the output voltage remains within the

voltage range specified by VCARD[1:0] bits.

It is cleared otherwise.

The reset value is 0.

This bit should not be set.

VCARD_INT

Card voltage interrupt

This bit is set when VCARD_OK bit is set.

This bit is cleared when read by the microcontroller.

The reset value is 0.

CRST

Card RST

This bit provides the actual level on the CRST pin when read.

The reset value is 0.

CIO

Card I/O

This bit provides the actual level on the CIO pin when read.

The reset value is 0.

Table 13. TIMER 1 (Timer MSB)

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Bit

Number

Bit

Mnemonic

Description

7 - 0

Bits 15 - 8

Timer MSB (bits 15 to 8)

AT83C24B-PRTIL Datasheet(PDF) 26 Page - ATMEL Corporation

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