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参数资料
| 型号： | S-812C38AUA-C2ST2U |
| 元件分类： | 固定正电压单路输出LDO稳压器 |
| 英文描述： | 3.8 V FIXED POSITIVE LDO REGULATOR, 0.35 V DROPOUT, PSSO3 |
| 封装： | HALOGEN FREE AND LEAD FREE, SOT-89, 3 PIN |
| 文件页数： | 2/39页 |
| 文件大小： | 690K |
| 代理商： | S-812C38AUA-C2ST2U |
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10
REGISTER DEFINITION
MODE REGISTER
The Mode Register is programmed by the MODE REGISTER SET command (MRS/EMRS) when all banks
are idle and no bursts are in progress
.
The Mode Register is used to define the operation specific mode of of the DDR SDRAM. This definition
includes the selection of a burst length, a burst type, a CAS latency, and an operating mode, as shown in
Figure1:
The Extended Mode Register controls functions beyond those controlled by the Mode Register; these
additional functionsinclude DLL enable/disable,output drive strength selection. These functions as shown
inFigure1:.
Mode Register must be loaded, and the controller must wait the specified time before initiating the
subsequent operation. Violating either of these requirements will result in unspecified operation.
Figure1:Mode Register Definition
BA0 BA1 A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
12
10
9
8
7
6
5
4
3
2
1
0
0*
Extended Mode Register
Address Bus
BT
Operating Mode
0*
13
CAS Latency
Burst Latency
* BA0 and BA1
must be 0, 0 to select the
Mode Register (vs. the
Extended Mode Register).
A3
Burst Type
0
1
Burst Latency
Sequential
Interleaved
CAS Latency
Reserved
3
Reserved
A3 = 0
A3 = 1
Reserved
22
44
88
Reserved
A2 A1 A0
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
Operating Mode
Normal Operation
Normal Operation/Reset DLL
Vendor Specific Test Mode
All other states reserved
A6 A5 A4
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
A6-A0
Valid
VS
Valid
-
A7
A8
0
1
0
--
An-A9
0
-
VS = Vendor Specific
MODE REGISTER DEFINITION
Reserved
Enable
Disable
DS0
Normal
Weak (optional)
BA0 BA1 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
12 11 10 9
8
7
6
5 4
3
2
1 0
1* 0*
DS0 DLL
A0
0
1
DLL
A1
0
1
* BA0 and BA1
must be 1, 0 to select the
Extended Mode Register (vs. the
base Mode Register).
Extended Mode Register
Address Bus
EXTENDED MODE REGISTER DEFINITION
Operating Mode
-
Valid
-
Operating Mode
Normal Operation
All other states
reserved
A10-
A2
A1-
A0
0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| S-812C38AY-B | 功能描述:低压差稳压器 - LDO 3.8V 1.0uA 2.0% RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| S-812C38AY-B2-U | 功能描述:低压差稳压器 - LDO 3.8V 1.0uA 2.0% RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| S-812C38AY-B-G | 制造商:Seiko Instruments Inc (SII) 功能描述:IC REG LDO 3.8V 0.05A TO92-3 |
| S-812C38AY-X | 制造商:SII 制造商全称:Seiko Instruments Inc 功能描述:HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR |
| S-812C38AY-X-G | 制造商:SII 制造商全称:Seiko Instruments Inc 功能描述:HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR |
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