S29AL008J70BFI020 datasheet(34/54 Pages) SPANSION

Part #	S29AL008J70BFI020

Description	8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory

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S29AL008J

S29AL008J_00_11 April 12, 2012

Da ta

Sh e e t

Figure 11.1 Data# Polling Algorithm

Notes

1. VA = Valid address for programming. During a sector erase operation, a valid address is an address within any sector selected for

erasure. During chip erase, a valid address is any non-protected sector address.

2. DQ7 should be rechecked even if DQ5 = 1 because DQ7 may change simultaneously with DQ5.

11.2

RY/BY#: Ready/Busy#

The RY/BY# is a dedicated, open-drain output pin that indicates whether an Embedded Algorithm is in

progress or complete. The RY/BY# status is valid after the rising edge of the final WE# pulse in the command

sequence. Since RY/BY# is an open-drain output, several RY/BY# pins can be tied together in parallel with a

pull-up resistor to VCC.

If the output is low (Busy), the device is actively erasing or programming. (This includes programming in the

Erase Suspend mode.) If the output is high (Ready), the device is ready to read array data (including during

the Erase Suspend mode), or is in the standby mode.

Table 11.1 on page 37 shows the outputs for RY/BY#. Figures Figure 17.1 on page 41, Figure 17.2

on page 42, Figure 17.5 on page 44 and Figure 17.6 on page 45 shows RY/BY# for read, reset, program,

and erase operations, respectively.

DQ7 = Data?

Yes

No

DQ5 = 1?

No

Yes

FAIL

PASS

Read DQ7–DQ0

Addr = VA

Read DQ7–DQ0

Addr = VA

DQ7 = Data?

START

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S29AL008J70BFI020 Datasheet(PDF) 34 Page - SPANSION

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