A29010 AMICC [AMIC Technology], A29010 Datasheet - Page 8

no-image

A29010

Manufacturer Part Number
A29010
Description
128K X 8 Bit CMOS 5.0 Volt-only, Uniform Sector Flash Memory
Manufacturer
AMICC [AMIC Technology]
Datasheet
Autoselect Command Sequence
The autoselect command sequence allows the host system
to access the manufacturer and devices codes, and
determine whether or not a sector is protected. The
Command Definitions table shows the address and data
requirements. This method is an alternative to that shown in
the Autoselect Codes (High Voltage Method) table, which is
intended for PROM programmers and requires V
address bit A9.
The autoselect command sequence is initiated by writing two
unlock cycles, followed by the autoselect command. The
device then enters the autoselect mode, and the system may
read at any address any number of times, without initiating
another command sequence.
Byte Program Command Sequence
Programming is a four-bus-cycle operation. The program
command sequence is initiated by writing two unlock write
cycles, followed by the program set-up command. The
program address and data are written next, which in turn
initiate the Embedded Program algorithm. The system is not
required to provide further controls or timings. The device
automatically provides internally generated program pulses
and verify the programmed cell margin. The Command
Definitions table shows the address and data requirements
for the byte program command sequence.
When the Embedded Program algorithm is complete, the
device then returns to reading array data and addresses are
no longer latched. The system can determine the status of
the program operation by using I/O
Operation Status" for information on these status bits.
Any commands written to the device during the Embedded
Program Algorithm are ignored. Programming is allowed in
any sequence and across sector boundaries. A bit cannot be
programmed from a "0" back to a "1 ". Attempting to do so
may halt the operation and set I/O
successful. However, a succeeding read will show that the
data is still "0". Only erase operations can convert a "0" to a
"1".
PRELIMINARY
Data
Polling algorithm to indicate the operation was
(August, 2001, Version 0.3)
5
7
to "1", or cause the
or I/O
6
. See "Write
ID
on
8
Note : See the appropriate Command Definitions table for
Increment Address
program command sequence.
algorithm in
Embedded
progress
Program
Figure 1. Program Operation
AMIC Technology, Inc.
Last Address ?
Write Program
Programming
Verify Data ?
from System
Completed
Command
Sequence
A29010 Series
Data Poll
START
Yes
Yes
No

Related parts for A29010