RC28F256J3D095 View Datasheet(PDF) - Numonyx -> Micron
Part Name
Description
MFG CO.
'RC28F256J3D095' PDF : 66 Pages View PDF
Numonyx™ Embedded Flash Memory (J3 v D, Monolithic)
Note:
For forward compatibility reasons, if the 8-word Asynchronous Page mode is used on
Numonyx™ Embedded Flash Memory (J3 v D, Monolithic) , a Clear Status Register
command must be executed after issuing the Set ECR command. See Table 18 for
further details.
Table 17: Enhanced Configuration Register
Reserved
Page
Length
ECR
15
ECR
14
BITS
ECR[15:14]
ECR[13]
ECR[12:0]
ECR
13
ECR
12
ECR
11
ECR
10
ECR
9
DESCRIPTION
RFU
• “1” = 8 Word Page mode
• “0” = 4 Word Page mode
RFU
Reserved
ECR
8
ECR
7
ECR
6
ECR
5
ECR
4
ECR
3
ECR
2
NOTES
All bits should be set to 0.
All bits should be set to 0.
ECR
1
ECR
0
Table 18: Asynchronous 8-Word Page Mode Command Bus-Cycle Definition
Command
Bus
Cycles
Required
First Bus Cycle
Oper
Addr(1)
Data
Set Enhanced Configuration
2
Register (Set ECR)
Write
ECD
1.. ECD = Enhanced Configuration Register Data
0060h
Second Bus Cycle
Oper
Addr(1)
Data
Write
ECD
0004h
8.1.2
Output Disable
With CEx asserted, and OE# at a logic-high level (VIH), the device outputs are disabled.
Output signals D[15:0] are placed in a high-impedance state.
8.2
Bus Writes
Writing or Programming to the device, is where the host writes information or data into
the flash device for non-volatile storage. When the flash device is programmed, ‘ones’
are changed to ‘zeros’. ‘Zeros’ cannot be programed back to ‘ones’. To do so, an erase
operation must be performed. Writing commands to the Command User Interface (CUI)
enables various modes of operation, including the following:
• Reading of array data
• Common Flash Interface (CFI) data
• Identifier codes, inspection, and clearing of the Status Register
• Block Erasure, Program, and Lock-bit Configuration (when VPEN = VPENH)
Erasing is performed on a block basis – all flash cells within a block are erased together.
Any information or data previously stored in the block will be lost. Erasing is typically
done prior to programming. The Block Erase command requires appropriate command
data and an address within the block to be erased. The Byte/Word Program command
requires the command and address of the location to be written. Set Block Lock-Bit
commands require the command and block within the device to be locked. The Clear
Block Lock-Bits command requires the command and address within the device to be
cleared.
December 2007
316577-06
Datasheet
33
Share Link: 
