JS28F640P33TF70 datasheet(18/88 Pages) NUMONYX

18 / 88 page

P33-65nm

Datasheet

Jul 2011

Order Number: 208034-04

6.2

Device Command Bus Cycles

Device operations are initiated by writing specific device commands to the CUI. See

Table 6, “Command Bus Cycles” on page 18. Several commands are used to modify

array data including Word Program and Block Erase commands. Writing either

command to the CUI initiates a sequence of internally-timed functions that culminate in

the completion of the requested task. However, the operation can be aborted by either

asserting RST# or by issuing an appropriate suspend command.

Configuration

0x60

Read Configuration

First cycle of a 2-cycle command; prepares the CUI for device read

configuration. If the Set Read Configuration Register command (0x03) is not

the next command, the CUI sets Status Register bits SR.5 and SR.4,

indicating a command sequence error.

0x03

Read Configuration

If the previous command was Read Configuration Register Setup (0x60), the

CUI latches the address and writes A[16:1]to the Read Configuration

access array data.

blank check

0xBC

Blank Check

First cycle of a 2-cycle command; initiates the Blank Check operation on a

main block.

0xD0

Blank Check

Confirm

Second cycle of blank check command sequence; it latches the block address

and executes blank check on the main array block.

other

0xEB

Extended Function

Interface

This command is used in extended function interface. first cycle of a multiple-

cycle command second cycle is a Sub-Op-Code, the data written on third

cycle is one less than the word count; the allowable value on this cycle are 0

through 511. The subsequent cycles load data words into the program buffer

at a specified address until word count is achieved.

Table 5:

Command Codes and Definitions (Sheet 3 of 3)

Mode

Code

Device Mode

Description

Table 6:

Command Bus Cycles (Sheet 1 of 2)

Mode

Command

Bus

Cycles

First Bus Cycle

Second Bus Cycle

Oper

Addr(1)

Data(2)

Oper

Addr(1)

Data(2)

Read

Read Array

Write

DnA

0xFF

Read Device

Identifier

≥ 2Write

DnA

0x90

Read

DBA + IA

Read CFI

≥ 2Write

DnA

0x98

Read

DBA + CFI-A

CFI-D

Read Status Register

Write

DnA

0x70

Read

DnA

SRD

Clear Status Register

Write

DnA

0x50

Program

Word Program

Write

0x40

Write

Buffered Program(3)

> 2

Write

0xE8

Write

N - 1

Buffered Enhanced

Factory Program

(BEFP)(4)

> 2

Write

0x80

Write

0xD0

Erase

Block Erase

Write

0x20

Write

0xD0

Suspend

Program/Erase

Suspend

1Write

DnA

0xB0

Program/Erase

Resume

1Write

DnA

0xD0-

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