MCP4161-502E/SN Microchip Technology, MCP4161-502E/SN Datasheet - Page 37

• Manufacturer Part Number: MCP4161-502E/SN
• Description: IC POT DGTL SNGL 5K SPI 8SOIC
• Manufacturer: Microchip Technology

Specifications of MCP4161-502E/SN

• Package / Case: 8-SOIC (3.9mm Width)
• Taps: 257
• Resistance (ohms): 5K
• Number Of Circuits: 1
• Temperature Coefficient: 150 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: SPI Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Resistance In Ohms: 5K
• Number Of Pots: Single
• Taps Per Pot: 256
• Resistance: 5 KOhms
• Wiper Memory: Non Volatile
• Digital Interface: Serial (4-Wire, SPI)
• Operating Supply Voltage: 2.5 V, 3.3 V, 5 V
• Supply Current: 550 uA
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

5.4
Shutdown is used to minimize the device’s current
consumption. The MCP4XXX has two methods to
achieve this. These are:
•
•
The Hardware Shutdown pin is backwards compatible
with the MCP42XXX devices.
5.4.1
The SHDN pin is available on the dual potentiometer
devices. When the SHDN pin is forced active (V
• The P0A and P1A terminals are disconnected
• The P0W and P1W terminals are simultaneously
• The Serial Interface is NOT disabled, and all
• Any EEPROM write cycles are completed
The Hardware Shutdown pin mode does NOT corrupt
the values in the Volatile Wiper Registers nor the
TCON register. When the Shutdown mode is exited
(SHDN pin is inactive (V
• The device returns to the Wiper setting specified
• The TCON register bits return to controlling the
FIGURE 5-2:
Resistor Network Configuration.
© 2008 Microchip Technology Inc.
Hardware Shutdown Pin (SHDN)
Terminal Control Register (TCON)
connect to the P0B and P1B terminals,
respectively (see
Serial Interface activity is executed
by the Volatile Wiper value
terminal connection state
Shutdown
HARDWARE SHUTDOWN PIN
(SHDN)
A
B
Figure
Hardware Shutdown
IH
)):
5-2)
W
IL
MCP414X/416X/424X/426X
):
5.4.2
The Terminal Control (TCON) register is a volatile
register used to configure the connection of each
resistor network terminal pin (A, B, and W) to the
Resistor
Register
The RxHW bits forces the selected resistor network
into the same state as the SHDN pin. Alternate low
power configurations may be achieved with the RxA,
RxW, and RxB bits.
5.4.3
Figure 5-3
RxHW bit signal interact to control the hardware
shutdown of each resistor network (independently).
Using the TCON bits allows each resistor network (Pot
0 and Pot 1) to be individually “shutdown” while the
hardware pin forces both resistor networks to be
“shutdown” at the same time.
FIGURE 5-3:
Interaction.
Note:
SHDN (from pin)
RxHW
(from TCON register)
4-2.
Network.
shows how the SHDN pin signal and the
TERMINAL CONTROL REGISTER
(TCON)
When the RxHW bit forces the resistor
network into the hardware SHDN state,
the state of the TCON register RxA, RxW,
and RxB bits is overridden (ignored).
When the state of the RxHW bit no longer
forces the resistor network into the
hardware SHDN state, the TCON register
RxA, RxW, and RxB bits return to control-
ling the terminal connection state. In other
words, the RxHW bit does not corrupt the
state of the RxA, RxW, and RxB bits.
INTERACTION OF SHDN PIN AND
TCON REGISTER
This
RxHW bit and SHDN pin
register
To Pot x Hardware
Shutdown Control
DS22059B-page 37
is
shown
in