IS43R16800C-5TL ISSI, Integrated Silicon Solution Inc, IS43R16800C-5TL Datasheet - Page 23

• Manufacturer Part Number: IS43R16800C-5TL
• Description: IC DDR SDRAM 128MBIT 66TSOP
• Manufacturer: ISSI, Integrated Silicon Solution Inc

Specifications of IS43R16800C-5TL

• Format - Memory: RAM
• Memory Type: DDR SDRAM
• Memory Size: 128M (8Mx16)
• Speed: 200MHz
• Interface: Parallel
• Voltage - Supply: 2.3 V ~ 2.7 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 66-TSOPII
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

IS43R16800C
IC43R16800C
Integrated Silicon Solution, Inc. — www.issi.com
Rev. A
10/13/08
Mode Register and Extended Mode Register Set
There are two mode registers, the mode register and the extended mode register so as to define the operating
mode. Parameters are set to both through the A0 to the A11 and BA0, BA1 pins by the mode register set command
[MRS] or the extended mode register set command [EMRS]. The mode register and the extended mode register are
set by inputting signal via the A0 to the A11 and BA0, BA1 during mode register set cycles. BA0 and BA1 determine
which one of the mode register or the extended mode register are set. Prior to a read or a write operation, the mode
register must be set.
Remind that no other parameters shown in the table bellow are allowed to input to the registers.
BA0
0
MRS
BA0
A8
0 No
1 Yes
1
EMRS
BA1
DLL Reset
0
BA1
0
A11 A10
0
Extended Mode Register Set [EMRS] (BA0 = 1, BA1 = 0)
A11 A10
0
0
A6 A5 A4 CAS Latency
Mode Register Set [MRS] (BA0 = 0, BA1 = 0)
0
0
0
0
1
1
1
1
0
0
0
1
1
0
0
1
1
A9
0
A9
0
0
1
0
1
0
1
0
1
DR
A8
A8
Reserved
Reserved
Reserved
Reserved
Reserved
0
A7
2.5
0
2
3
A7
0
A6
A6
0
LMODE
A5
A1
0 Normal
1 Weak
A3
0 Sequential
1 Interleave
A5
0
Driver Strength
Burst Type
A4
A4
0
A3
BT
A3
0
A2 A1 A0 Burst Length
A2
A2
0
0
0
0
1
1
1
1
0
A0
0 DLL Enable
1 DLL Disable
0
0
1
1
0
0
1
1
A1
DS
A1
BL
DLL Control
0
1
0
1
0
1
0
1
DLL
A0
A0
Reserved
Reserved
Reserved
Reserved
Reserved
2
4
8
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