参数资料
型号: M2V56S30ATP-6
元件分类: DRAM
英文描述: 32M X 8 SYNCHRONOUS DRAM, 5.4 ns, PDSO54
封装: 0.400 X 0.875 INCH, TSOP2-54
文件页数: 49/51页
文件大小: 430K
代理商: M2V56S30ATP-6
7
MITSUBISHI ELECTRIC
May '02
MITSUBISHI LSIs
SDRAM (Rev.1.41)
Single Data Rate
M2V56S20/ 30/ 40 AKT
256M Synchronous DRAM
M2V56S20/ 30/ 40 ATP
BASIC FUNCTIONS
Activate (ACT) [/RAS =L, /CAS =/WE =H]
ACT command activates a row in an idle bank indicated by BA.
Read (READ) [/RAS =H, /CAS =L, /WE =H]
READ command starts burst read from the active bank indicated by BA. First output data appears after
/CAS latency. When A10 =H at this command, the bank is deactivated after the burst read (auto-
precharge, READA)
Write (WRITE) [/RAS =H, /CAS =/WE =L]
WRITE command starts burst write to the active bank indicated by BA. Total data length to be written
is set by burst length. When A10 =H at this command, the bank is deactivated after the burst write
(auto-precharge, WRITEA).
Precharge (PRE) [/RAS =L, /CAS =H, /WE =L]
PRE command deactivates the active bank indicated by BA. This command also terminates burst read
/write operation. When A10 =H at this command, all banks are deactivated (precharge all, PREA).
Auto-Refresh (REFA) [/RAS =/CAS =L, /WE =CKE =H]
REFA command starts auto-refresh cycle. Refresh address are generated internally. After this
command, the banks are precharged automatically.
/CS
/RAS
/CAS
/WE
CKE
A10
CLK
Chip Select : L=select, H=deselect
Command
Refresh Option @refresh command
Precharge Option @precharge or read/write command
define basic commands
The M2V56S20/30/40A* provides basic functions, bank (row) activate, burst read / write, bank (row)
precharge, and auto / self refresh. Each command is defined by control signals of /RAS, /CAS and /WE at
CLK rising edge. In addition to 3 signals, /CS ,CKE and A10 are used as chip select, refresh option, and
precharge option, respectively. To know the detailed definition of commands, please see the command
truth table.
相关PDF资料
PDF描述
M30-6000206 2 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT
M30-6000406 4 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT
M30-6001106 11 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT
M30-6011006 20 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT
M30-6011506 30 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT
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