wms7140 Winbond Electronics Corp America, wms7140 Datasheet - Page 3

• Manufacturer Part Number: wms7140
• Description: Nonvolatile Digital Potentiometers With Up/down 3-wire Interface, 10kohm, 50kohm, 100kohm Resistance 16 Taps With Optional Output Buffer
• Manufacturer: Winbond Electronics Corp America

3. BLOCK DIAGRAM
V
V
U/D
U/D
INC
INC
CS
CS
SS
SS
NV Memory
NV Memory
Up/Down
Up/Down
Interface
Interface
FIGURE 1 – WMS7140 BLOCK DIAGRAM (Rheostat Mode)
Control
Control
Serial
Serial
FIGURE 2 – WMS7141 BLOCK DIAGRAM (Divider Mode)
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NV Memory
NV Memory
NVMEM0
NVMEM0
Publication Release Date: April 21, 2005
WMS7140/1
Revision 1.1
V
V
V
V
V
V
V
V
W
W
DD
DD
B
B
A
A