Texas Instruments TMS320F20x/F24x DSP ±4. Erase Algorithm in the Overall Flow, Preliminary

Erase Algorithm

PRELIMINARY

3.3 Erase Algorithm

The erase algorithm follows the clear algorithm in executing the entire initial- ization flow. Figure 3±4 highlights the erase algorithm's place in the overall flow.

Figure 3±4. Erase Algorithm in the Overall Flow

Clear algorithm

Erase algorithm

Start

X = 1

Clear the

array

Erase the

array

Bits in

depletion?

No

Initialization flow

	Flash-write
Recover using
			algorithm
	flash-write
		X = X+1
Yes			Yes
		X < 10 ?

No

Fail

Yes

No

Reprogram?

Done/Stop

Program the array

Programming algorithm

The erase algorithm consists of multiple iterations of a loop with one erase pulse applied in each iteration. Table 3±2 outlines the steps involved in apply- ing a single erase pulse.

3-10 PRELIMINARY