JS28F256P30B95A datasheet(40/97 Pages) MICRON

40 / 97 page

P30

Datasheet

August 2008

306666-12

11.0

Registers

When non-array reads are performed in asynchronous page mode only the first data is

valid and all subsequent data are undefined. When a non-array read operation occurs

as synchronous burst mode, the same word of data requested will be output on

successive clock edges until the burst length requirements are satisfied.

11.1

Read Status Register

To read the Status Register, issue the Read Status Register command at any address.

Status Register information is available to which the Read Status Register, Word

Program, or Block Erase command was issued. Status Register data is automatically

made available following a Word Program, Block Erase, or Block Lock command

sequence. Reads from the device after any of these command sequences outputs the

device’s status until another valid command is written (e.g. Read Array command).

The Status Register is read using single asynchronous-mode or synchronous burst

mode reads. Status Register data is output on DQ[7:0], while 0x00 is output on

DQ[15:8]. In asynchronous mode the falling edge of OE#, or CE# (whichever occurs

first) updates and latches the Status Register contents. However, reading the Status

data.

The Device Write Status bit (SR[7]) provides overall status of the device. Status

suspend, VPP, and block-locked operations.

Table 18: Status Register Description (Sheet 1 of 2)

Status Register (SR)

Default Value = 0x80

Device Write

Status

Erase Suspend

Status

Erase Status

Program

Status

VPP Status

Program

Suspend

Status

Block-Locked

Status

BEFP

Status

DWS

ESS

VPPS

PSS

BLS

BWS

6543

210

Bit

Name

Description

Device Write Status (DWS)

0 = Device is busy; program or erase cycle in progress; SR[0] valid.

1 = Device is ready; SR[6:1] are valid.

Erase Suspend Status (ESS)

0 = Erase suspend not in effect.

1 = Erase suspend in effect.

Erase Status (ES)

0 = Erase successful.

1 = Erase fail or program sequence error when set with SR[4,7].

4Program Status (PS)

0 = Program successful.

1 = Program fail or program sequence error when set with SR[5,7]

3VPP Status (VPPS)

0 = VPP within acceptable limits during program or erase operation.

1 = VPP < VPPLK during program or erase operation.

JS28F256P30B95A датащи(PDF) 40 Page - Micron Technology

JS28F256P30B95A датащи(HTML) 40 Page - Micron Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97

датащи скачать

ссылки URL