LE25S161 datasheet(27/54 Pages) ONSEMI

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LE25S161

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10-10. Page Program

10-10-1. Normal Page Program (PP)

10-10-2. Low-Power Page Program (PPL)

There are two Page Program commands, Normal program (PP: 02h ) and Low-Power program (PPL: 0Ah) These two

commands are completely functionally the same. By selecting the Low-Power program (PPL), the operating current is

reduced, but the program cycle time is extended. (Iccpp > Iccppl , tPPL > tPP)

Page Program is an operation that programs any number of bytes from 1 to 256 bytes within the same sector page (page

addresses: A20 to A8). Before initiating Page Program, the data on the page concerned must be erased using Small Sector

Erase, Sector Erase, or Chip Erase. Page Program (PP, PPL) allows only previous erased data (FFh).

"Figure 13. Normal Page Program (PP)". "Figure 14. Low-power Page Program (PPL)" shows the timing waveforms.

"Figure 35. Page Program Flowcharts" shows the flowcharts.

The sequence of PP or PPL operation :

CS goes to low  input PP command (02h) or PPL command (0Ah)

 3 Byte address (A23-A0) input on SI

 n-Byte data input on SI 

 CS goes to high (be executed by the rising CS edge)

The program data must be loaded in 1-byte increments. If the data loaded has exceeded 256 bytes, the 256 bytes loaded

last are programmed. After the correct input sequence the internal program operation is executed by the rising CS edge,

and it is completed automatically by the control exercised by the internal timer (tPP or tPPL). The end of program

operation can also be detected by status register (RDY).

Figure 13. Normal Page Program (PP)

● Address A23 to A21 are "Don't care".

Byte 1

Byte 2

Byte

256

Add

(A7-A0)

Add

(A15-A8)

Add

(A23-A16)

tPP

Self-timed

Program Cycle

SCK

High Impedance

02h

31 32

39 40

Mode3

Mode0

8CLK

2079

MSB

Figure 14. Low-Power Page Program (PPL)

● Address A23 to A21 are "Don't care".

Byte 1

Byte 2

Byte

256

Add

(A7-A0)

Add

(A15-A8)

Add

(A23-A16)

tPPL

Self-timed

Program Cycle

SCK

High Impedance

0Ah

31 32

39 40

Mode3

Mode0

8CLK

2079

MSB

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