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參數(shù)資料
| 型號： | SMFV008 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 8M x 8 Bit SmartMedia Card(8M x 8 位 智能媒體卡) |
| 中文描述： | 8米× 8位SmartMedia卡（8米× 8位智能媒體卡） |
| 文件頁數(shù)： | 4/24頁 |
| 文件大小： | 294K |
| 代理商： | SMFV008 |
SMFV008
SmartMedia
TM
4
PRODUCT INTRODUCTION
The SMFV008 is a 66Mbit(69,206,016 bit) memory organized as 16,384 rows by 528 columns. Spare sixteen columns are located
from column address of 512 to 527. A 528-byte data register is connected to memory cell arrays accommodating data transfer
between the I/O buffers and memory during page read and page program operations. The memory array is made up of 16 cells that
are serially connected to form a NAND structure. Each of the 16 cells resides in a different page. A block consists of the 16 pa ges
formed by one NAND structures, totaling 528 NAND structures of 16 cells. The array organization is shown in Figure 2. The progra m
and read operations are executed on a page basis, while the erase operation is executed on a block basis. The memory array con-
sists of 1024 separately erasable 8K-byte blocks. It indicates that the bit by bit erase operation is prohibited on the SMFV008.
The SMFV008 has addresses multiplexed into 8 I/O
′
s. This scheme dramatically reduces pin counts and allows systems upgrades to
future densities by maintaining consistency in system board design. Command, address and data are all written through I/O
′
s by
bringing WE to low while CE is low. Data is latched on the rising edge of WE. Command Latch Enable(CLE) and Address Latch
Enable(ALE) are used to multiplex command and address respectively, via the I/O pins. All commands require one bus cycle except
for Block Erase command which requires two cycles: one cycle for erase-setup and another for erase-execution after block address
loading. The 8M byte physical space requires 23 addresses, thereby requiring three cycles for byte-level addressing: column
address, low row address and high row address, in that order. Page Read and Page Program need the same three address cycles
following the required command input. In Block Erase operation, however, only the two row address cycles are used.
Device operations are selected by writing specific commands into the command register. Table 1 defines the specific commands of
the SMFV008.
Table 1. COMMAND SETS
NOTE
: 1. The 00H command defines starting address of the 1st half of registers.
The 01H command defines starting address of the 2nd half of registers.
After data access on the 2nd half of register by the 01h command, the status pointer is
automatically moved to the 1st half register(00h) on the next cycle.
Function
1st. Cycle
2nd. Cycle
Acceptable Command during Busy
Sequential Data Input
80h
-
Read 1
00h/01h
(1)
-
Read 2
50h
-
Read ID
90h
-
Reset
FFh
-
O
Page Program
10h
-
Block Erase
60h
D0h
Read Status
70h
-
O
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| SOT-343 | Package Dimensions in mm |
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