AT52SC1283J datasheet(10/52 Pages) ATMEL

10 / 52 page

3530B–STKD–2/4/05

AT52SC1283J/1284J [Preliminary]

contents change while being read. CE or OE must be toggled with each subsequent status read,

or the status register will not indicate completion of a Program or Erase operation.

When the Write State Machine (WSM) is active, SR7 will indicate the status of the WSM; the

remaining bits in the status register indicate whether the WSM was successful in performing the

preferred operation (see Table 6-3).

6.13.1

Read Status Register In the Burst Mode

The waveform below shows a status register read during a program operation. The two-bus

cycle command for a program operation is given followed by a read status register command.

Following the read status register command, the AVD signal is pulsed low to latch the valid

address at point A. With the OE signal pulsed low and for the specified clock latency of three, the

status register output is valid within 13 ns from clock edge B. The same status register data is

output on successive clock edges. To update the status register output, the AVD signal needs to

be pulsed low and the next data is available after a clock latency of three. The status register

output is also available after the chosen clock latency during an erase operation.

Figure 6-3.

Read Status Register in the Burst Mode

Note:

1. The WAIT signal is for a burst configuration setting of B10 and B8 = 0.

40H/10H

DATA

70H

00H

80H

ADDRESS

A0 - A22

I/O0 - I/O15

AVD

CLK

WAIT

(1)

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