W40S11-23G Cypress Semiconductor Corp, W40S11-23G Datasheet - Page 3

• Manufacturer Part Number: W40S11-23G
• Manufacturer: Cypress Semiconductor Corp

Specifications of W40S11-23G

• Number Of Outputs: 13
• Operating Supply Voltage (max): 3.47V
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (min): 3.14V
• Mounting: Surface Mount
• Pin Count: 28
• Operating Supply Voltage (typ): 3.3V
• Package Type: SOIC
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Not Compliant

Writing Data Bytes
Each bit in the data bytes control a particular device function.
Bits are written MSB (most significant bit) first, which is bit 7.
Table 2. Data Bytes 0–2 Serial Configuration Map
Note:
2.
Data Byte 0 SDRAM Active/Inactive Register (1 = Enable, 0 = Disable)
Data Byte 1 SDRAM Active/Inactive Register (1 = Enable, 0 = Disable)
Data Byte 2 SDRAM Active/Inactive Register (1 = Enable, 0 = Disable)
At power-up all SDRAM outputs are enabled and active. Program Reserved bits to a “0.”
Bit(s)
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Pin No.
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
11
10
27
26
23
22
19
18
12
7
6
3
2
Affected Pin
SDRAM11
SDRAM10
SDRAM12
Pin Name
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SDRAM5
SDRAM4
SDRAM3
SDRAM2
SDRAM1
SDRAM0
SDRAM9
SDRAM8
SDRAM7
SDRAM6
Clock Output Disable
Clock Output Disable
(Reserved)
(Reserved)
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
Clock Output Disable
(Reserved)
(Reserved)
Clock Output Disable
Clock Output Disable
(Reserved)
Clock Output Disable
(Reserved)
(Reserved)
(Reserved)
(Reserved)
(Reserved)
(Reserved)
Control Function
[2]
3
Table 2 gives the bit formats for registers located in Data
Bytes 0–6.
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
--
--
--
--
--
--
0
-
-
-
-
-
Bit Control
W40S11-23
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
--
--
--
--
--
--
1
-
-
-
-
-
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