LE25S161 datasheet(16/54 Pages) ONSEMI

16 / 54 page

LE25S161

www.onsemi.com

10. Description of Commands and Operations

A detailed description of the functions and operations corresponding to each command is presented below.

10-1. Read Status Register (RDSR)

The contents of the status registers can be read using the Read Status Register (RDSR). This command can be executed

even during the following operations.

• Erase (SSE, SE or CHE)

• Page Program (PP or PPL)

• Write Status Register (WRSR)

"Figure 2. Read Status Register (RDSR)" shows the timing waveforms.

The sequence of RDSR operation :

CS goes to low  input RDSR command (05h)

 Status Register data (SRWP, SUS, TB, BP2, BP1, BP0,WEN, RDY) out on SO 

completed by CS=high

* The data output starts from the falling edge of SCK(7th clock)

This command outputs the contents of the status registers synchronized to the falling edge of the clock (SCK).

If the clock input is continued after bit0 (RDY) has been output, the data is output by returning to bit7 (SRWP) that was

first output, after which the output is repeated for as long as the clock input is continued. The data can be read by this

command at any time (even during a program, erase cycle). By setting CS to high, the device is deselected, and Read

JEDEC ID cycle is completed. While the device is deselected, the output pin SO is in a high-impedance state

● DATA: Status Resister, "Table 3 Status Register"

Figure 2. Read Status Register (RDSR)

SCK

MSB

05h

DATA

High Impedance

Mode 3

Mode 0

8CLK

DATA

MSB

LE25S161 Datasheet(PDF) 16 Page - ON Semiconductor