Application Note

Sep 2008

13

Order Number: 320005-04

Conversion Guide: P33 130nm to 65nm

5.4

Device Commands

The command set for the P33 65nm and P33 130nm devices are fully compatible.

However, the P33 65nm device includes new features such as the blank check operation

and the enhanced configuration operation. Command set operations are compared

here:

Note:

During Buffered Program command (E8h) sequence, if a read of the Main Array Data needs to be performed during the

loading of the program buffer, then a write to an address outside of current block will abort the Buffer Programming

Operation. Issuing the Read Array command (FFh) will put the device into Read Array mode. After Main Array read

operation has been completed, the Buffer Program Operation must be restarted.

5.5

WAIT State Comparison

This section will compare the difference between the WAIT states on the P33 130nm

and the P33 65nm.

5.5.1

WAIT State P33 65nm

End of wordline (EOWL) WAIT states can result when the starting address of the burst

operation is not aligned to a 16-word boundary; that is, A[3:0] of start address does

not equal 0x0. Figure 3, “End of Wordline Timing Diagram” on page 14 illustrates the

end of wordline WAIT state(s), which occur after the first 16-word boundary is reached.

The number of data words and the number of WAIT states for both P33 130nm and P33

65nm are summarized in Table 9, “End of Wordline Data and WAIT State Comparison”

on page 14.

Table 8:

Command Bus Operations

Command

P33 130nm Code

(Setup/Confirm)

P33 65nm Code

(Setup/Confirm)

Read Array

00FFh

00FFh

Read Status Register

0070h

0070h

Clear Status Register

0050h

0050h

Read Device Information

0090h

0090h

CFI Query

0098h

0098h

Word Program

0040h

0040h

Buffered Program

00E8h/00D0h

00E8h/00D0h

Buffered Enhanced Factory Program

0080h/00D0h

0080h/00D0h

Block Erase

0020h/00D0h

0020h/00D0h

Program/Erase Suspend

00B0h

00B0h

Program/Erase Resume

00D0h

00D0h

Blank Check

N/A

00BCh/00D0h

Lock Block

0060h/0001h

0060h/0001h

Unlock Block

0060h/00D0h

0060h/00D0h

Lock Down Block

0060h/002Fh

0060h/002Fh

Password Access

N/A

00EBh

Program Read Configuration Register

0060h/0003h

0060h/0003h

Program OTP Register

00C0h

00C0h