K9F4G08U0A SAMSUNG [Samsung semiconductor], K9F4G08U0A Datasheet - Page 33

• Manufacturer Part Number: K9F4G08U0A
• Description: FLASH MEMORY
• Manufacturer: SAMSUNG [Samsung semiconductor]

K9K8G08U1A
K9F4G08U0A
Device Operation
PAGE READ
Page read is initiated by writing 00h-30h to the command register along with five address cycles. After initial power up, 00h command
is latched. Therefore only five address cycles and 30h command initiates that operation after initial power up. The 2,112 bytes of data
within the selected page are transferred to the data registers in less than 20µs(t
this data transfer(tR) by analyzing the output of R/B pin. Once the data in a page is loaded into the data registers, they may be read
out in 25ns cycle time by sequentially pulsing RE. The repetitive high to low transitions of the RE clock make the device output the
data starting from the selected column address up to the last column address.
The device may output random data in a page instead of the consecutive sequential data by writing random data output command.
The column address of next data, which is going to be out, may be changed to the address which follows random data output com-
mand. Random data output can be operated multiple times regardless of how many times it is done in a page.
Figure 6. Read Operation
I/Ox
CLE
CE
WE
ALE
R/B
RE
00h
Col. Add.1,2 & Row Add.1,2,3
Address(5Cycle)
30h
Data Field
t
R
33
Spare Field
R
). The system controller can detect the completion of
Data Output(Serial Access)
FLASH MEMORY
Preliminary