AT697F datasheet(88/155 Pages) ATMEL

88 / 155 page

7703C–AERO–6/09

AT697F ADVANCE INFORMATION

The period between each AUTO-REFRESH command is calculated as follows:

tREFRESH = ((reload value) + 1) / SDCLK frequency

Table 48. Write Protection Register 1 - WPR1

Address = 0x8000001C

tag[14:0]

mask[14:0]

r/w r/w

r/w

xx xxxx xxxx xxxx x

xxx xxxx xxxx xxxx

Bit Number

Mnemonic

Description

Enable.

If set, enables the write protect unit

Block protect

If set, selects block protect mode

29..15

tag[14:0]

Address tag

This field is compared against address(29:15)

14..0

mask[14:0]

Address mask

This field contains the address mask

Table 49. Write Protection Register 2 - WPR2

Address = 0x80000020

tag[14:0]

mask[14:0]

r/w r/w

r/w

xx xxxx xxxx xxxx x

xxx xxxx xxxx xxxx

Bit Number

Mnemonic

Description

Enable.

If set, enables the write protect unit

Block protect

If set, selects block protect mode

29..15

tag[14:0]

Address tag

This field is compared against address(29:15)

14..0

mask[14:0]

Address mask

this field contains the address mask

AT697F Datasheet(PDF) 88 Page - ATMEL Corporation

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