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參數(shù)資料
| 型號： | KMM374S403CTL |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 4Mx72 SDRAM DIMM(4Mx72 動態(tài) RAM模塊) |
| 中文描述： | 4Mx72 SDRAM的內(nèi)存（4Mx72動態(tài)內(nèi)存模塊） |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 141K |
| 代理商： | KMM374S403CTL |
KMM374S403CTL
REV. 3 Mar. '98
PC66 SDRAM MODULE
PIN CONFIGURATION DESCRIPTION
Pin
Name
Input Function
CLK
System clock
Active on the positive going edge to sample all inputs.
CS
Chip select
Disables or enables device operation by masking or enabling all inputs except
CLK, CKE and DQM
CKE
Clock enable
Masks system clock to freeze operation from the next clock cycle.
CKE should be enabled at least one cycle prior to new command.
Disable input buffers for power down in standby.
CKE should be enabled 1CLK+t
SS
prior to valid command.
A0 ~ A10/AP
Address
Row/column addresses are multiplexed on the same pins.
Row address : RA0 ~ RA10, Column address : CA0 ~ CA8
BA0
Bank select address
Selects bank to be activated during row address latch time.
Selects bank for read/write during column address latch time.
RAS
Row address strobe
Latches row addresses on the positive going edge of the CLK with RAS low.
Enables row access & precharge.
CAS
Column address strobe
Latches column addresses on the positive going edge of the CLK with CAS low.
Enables column access.
WE
Write enable
Enables write operation and row precharge.
Latches data in starting from CAS, WE active.
DQM0 ~ 7
Data input/output mask
Makes data output Hi-Z, t
SHZ
after the clock and masks the output.
Blocks data input when DQM active. (Byte masking)
DQ0 ~ 63
Data input/output
Data inputs/outputs are multiplexed on the same pins.
CB0 ~ 7
Check bit
Check bits for ECC.
V
DD
/V
SS
Power supply/ground
Power and ground for the input buffers and the core logic.
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