RC28F128M29EWLA NUMONYX, RC28F128M29EWLA Datasheet - Page 39

• Manufacturer Part Number: RC28F128M29EWLA
• Description: IC FLASH 128MBIT 25NS 64BGA
• Manufacturer: NUMONYX
• Series: Axcell™r

Specifications of RC28F128M29EWLA

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 128M (16Mx8, 8Mx16)
• Speed: 60ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Numonyx
6.2.5
Note:
®
Axcell™ M29EW
Enhanced Buffer Program
The Enhanced Buffer Program command, available only on x16 mode 128-Mbit device,
makes use of the device’s 256-word write buffer to speed up programming. 256 words can
be loaded into the write buffer. Each write buffer has the same A22-A8 addresses. The
Enhanced Buffer Program command dramatically reduces system programming time.
When issuing a Enhanced Buffer Program command, the V
High, V
The Enhanced Buffer Program has the same programming speed as a 256-word write to
buffer program speed. See
Three successive steps are required to issue the Enhanced Buffer Program command:
To program the content of the write buffer, the Enhanced Buffer Program command must be
followed by an Enhanced Buffer Program Confirm command. The command ends with an
internal Enhanced Buffer Program confirm cycle.
Note that address/data cycles must be loaded in an increasing address order (A[7:0] from
00h to FFh) and completely (all 256 words). Invalid address combinations or failing to follow
the correct sequence of bus write cycles will result in Enhanced Buffer Program abort.
The status register bits DQ1, DQ5, DQ6, and DQ7 can be used to monitor the device status
during an Enhanced Buffer Program operation.
An external supply (12 V) can be used to improve programming efficiency.
It is possible to detect program operation fails when changing programmed data from “0” to
“1”.
Enhanced Buffered Program commands are available for x 16 mode only.
–
–
–
IH
, or raised to V
The Enhanced Buffered Program command starts with two unlock cycles.
The third bus write cycle sets up the Enhanced Buffered Program command. The
setup code can be addressed to any location within the targeted block.
The fourth bus write cycle loads the first address and data to be programmed.
There a total of 256 address and data loading cycles.
PPH
Table 28
(programming acceleration).
208031-04
for details.
PP
/WP# pin can be either held
Command Interface
39