S29GL01GP datasheet(21/81 Pages) SPANSION

21 / 81 page

October 22, 2012 S29GL-P_00_A14

S29GL-P MirrorBit® Flash Family

Data

She e t

7.6

Autoselect

The Autoselect mode provides manufacturer ID, Device identification, and sector protection information,

through identifier codes output from the internal register (separate from the memory array) on DQ7-DQ0. This

mode is primarily intended for programming equipment to automatically match a device to be programmed

with its corresponding programming algorithm (see Table 7.3). The Autoselect codes can also be accessed

in-system.

There are two methods to access autoselect codes. One uses the autoselect command, the other applies VID

on address pin A9.

When using programming equipment, the autoselect mode requires VID (11.5 V to 12.5 V) on address pin A9.

Address pins must be as shown in Table 7.2.

 To access Autoselect mode without using high voltage on A9, the host system must issue the Autoselect

command.

 The Autoselect command sequence may be written to an address within a sector that is either in the read

or erase-suspend-read mode.

 The Autoselect command may not be written while the device is actively programming or erasing.

 The system must write the reset command to return to the read mode (or erase-suspend-read mode if the

sector was previously in Erase Suspend).

 It is recommended that A9 apply V

ID after power-up sequence is completed. In addition, it is recommended

that A9 apply from VID to VIH/VIL before power-down the VCC/VIO.

 See Table 12.1 on page 69 for command sequence details.

 When verifying sector protection, the sector address must appear on the appropriate highest order address

bits (see Table 7.4 to Table 7.5). The remaining address bits are don't care. When all necessary bits have

been set as required, the programming equipment may then read the corresponding identifier code on

DQ15-DQ0. The Autoselect codes can also be accessed in-system through the command register.

S29GL01GP 数据表(PDF) 21 Page - SPANSION