Am28F010A

13

Embedded Programming Algorithm

The Embedded Program Setup is a command only op-

eration that stages the device for automatic program-

ming. Embedded Program Setup is performed by

writing 10h or 50h to the command register.

Once the Embedded Setup Program operation is per-

formed, the next WE# pulse causes a transition to an

active programming operation. Addresses are latched

on the falling edge of CE# or WE# pulse, whichever

happens later. Data is latched on the rising edge of

WE# or CE#, whichever happens first. The rising edge

of WE# also begins the programming operation. The

system is not required to provide further controls or

timings. The device will automatically provide an ade-

quate internally generated program pulse and verify

margin. The automatic programming operation is

completed when the data on DQ7 is equivalent to data

written to this bit (see Write Operation Status section)

at which time the device returns to Read mode.

Figure 2 and Table 5 illustrate the Embedded Program

algorithm, a typical command string, and bus operation.

Table 5.

Embedded Programming Algorithm

to Functional Description. Device is either powered-down, erase inhibit or program inhibit.

Bus Operations

Command

Comments

Standby

Write

Embedded Program Setup Command

Data = 10h or 50h

Write

Embedded Program Command

Valid Address/Data

Read

Data

Read

Available for Read Operations

START

Write Embedded Setup Program Command

Write Embedded Program Command (A/D)

Programming Completed

Yes

Data# Poll Device

Increment Address

No

16778D-7

Figure 2.

Embedded Programming Algorithm

Last Address