EM638165 Etron Technology Inc., EM638165 Datasheet - Page 11

• Manufacturer Part Number: EM638165
• Description: 4Mega x 16 Synchronous DRAM (SDRAM)
• Manufacturer: Etron Technology Inc.

Preliminary
A0-A9
CAS#
RAS#
DQM
CKE
CS#
WE#
CL K
The mode register is divided into various fields depending on functionality.
*Note: RFU (Reserved for future use) should stay “0” during MRS cycle.
This field specifies the data length of column access using the A2~A0 pins and selects the Burst
Length to be 2, 4, 8, or full page.
Function RFU*
A10
A11
DQ
Address BS0,1 A11,10
Burst Length Field (A2~A0)
A2
Hi-Z
0
0
0
0
1
1
1
1
T0
RFU*
A1
0
0
1
1
0
0
1
1
Mode Register Set Cycle
t CK2
PrechargeAll
T 1
WBL
A9
T2
A0
0
1
0
1
0
1
0
1
t
Test Mode
A8
Address Key
RP
Mode Register
Set Command
T3
Clock min.
A7
11
T4
Burst Length
Reserved
Reserved
Reserved
Full Page
Any
Command
A6
T5
CAS Latency
1
2
4
8
(CAS# Latency = 2, 3)
A5
T6
A4
T7
A3
BT
T8
Rev 0.6
EM638165
A2
Burst Length
T9
A1
Feb. 2001
T10
A0