MCP4641-502E/ST Microchip Technology, MCP4641-502E/ST Datasheet - Page 36

• Manufacturer Part Number: MCP4641-502E/ST
• Description: IC DGTL POT 5K 256TAPS 14-TSSOP
• Manufacturer: Microchip Technology

Specifications of MCP4641-502E/ST

• Package / Case: 14-TSSOP
• Taps: 129
• Resistance (ohms): 5K
• Number Of Circuits: 2
• Temperature Coefficient: 150 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: I²C, 2-Wire 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: Dual
• Taps Per Pot: 128
• Resistance: 5 KOhms
• Wiper Memory: Non Volatile
• Digital Interface: Serial (2-Wire, I2C)
• Operating Supply Voltage: 2.5 V, 3.3 V, 5 V
• Supply Current: 2.5 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

MCP454X/456X/464X/466X
3.1
The HVC/A0 pin is the Address 0 input for the I
interface as well as the High Voltage Command pin. At
the device’s POR/BOR the value of the A0 address bit
is latched. This input along with the A2 and A1 pins
completes the device address. This allows up to 8
MCP45xx/46xx devices can be on a single I
During normal operation the the voltage on this pin
determines if the I
or a High Voltage command (when HVC/A0 = V
3.2
The SCL pin is the serial interfaces Serial Clock pin.
This pin is connected to the Host Controllers SCL pin.
The MCP45XX/46XX is a slave device, so it’s SCL pin
accepts only external clock signals.
3.3
The SDA pin is the serial interfaces Serial Data pin.
This pin is connected to the Host Controllers SDA pin.
The SDA pin is an open-drain N-channel driver.
3.4
The V
3.5
The terminal B pin is connected to the internal
potentiometer’s terminal B.
The potentiometer’s terminal B is the fixed connection
to the Zero Scale wiper value of the digital potentiome-
ter. This corresponds to a wiper value of 0x00 for both
7-bit and 8-bit devices.
The terminal B pin does not have a polarity relative to
the terminal W or A pins. The terminal B pin can
support both positive and negative current. The voltage
on terminal B must be between V
MCP46XX devices have two terminal B pins, one for
each resistor network.
3.6
The terminal W pin is connected to the internal potenti-
ometer’s terminal W (the wiper). The wiper terminal is
the adjustable terminal of the digital potentiometer. The
terminal W pin does not have a polarity relative to
terminals A or B pins. The terminal W pin can support
both positive and negative current. The voltage on
terminal W must be between V
MCP46XX devices have two terminal W pins, one for
each resistor network.
DS22107A-page 36
SS
High Voltage Command / Address 0
(HVC/A0)
Serial Clock (SCL)
Serial Data (SDA)
Ground (V
pin is the device ground reference.
Potentiometer Terminal B
Potentiometer Wiper (W) Terminal
2
C command is a normal command
SS
)
SS
SS
and V
and V
DD
DD
.
2
C bus.
.
IHH
).
2
C
3.7
The terminal A pin is available on the MCP4XX1
devices, and is connected to the internal potentiome-
ter’s terminal A.
The potentiometer’s terminal A is the fixed connection
to the Full-Scale wiper value of the digital potentiome-
ter. This corresponds to a wiper value of 0x100 for 8-bit
devices or 0x80 for 7-bit devices.
The terminal A pin does not have a polarity relative to
the terminal W or B pins. The terminal A pin can
support both positive and negative current. The voltage
on terminal A must be between V
The terminal A pin is not available on the MCP4XX2
devices, and the internally terminal A signal is floating.
MCP46X1 devices have two terminal A pins, one for
each resistor network.
3.8
The WP pin is used to force the non-volatile memory to
be write protected.
3.9
The A2 pin is the I
with the A1 and A0 pins, up to 8 MCP45XX/46XX
devices can be on a single I
3.10
The A2 pin is the I
with the A2 and A0 pins, up to 8 MCP45XX/46XX
devices can be on a single I
3.11
The V
The input power supply is relative to V
While the device V
performance of the device may not meet the data sheet
specifications.
3.12
These pins should be either connected to V
3.13
This pad is conductively connected to the device’s sub-
strate. This pad should be tied to the same potential as
the V
used to assist as a heat sink for the device when con-
nected to a PCB heat sink.
SS
DD
pin (or left unconnected). This pad could be
Potentiometer Terminal A
Write Protect (WP)
Address 2 (A2)
Address 1 (A1)
Positive Power Supply Input (V
pin is the device’s positive power supply input.
No Connect (NC)
Exposed Pad (EP)
2
2
C interface’s Address 2 pin. Along
C interface’s Address 1 pin. Along
DD
© 2008 Microchip Technology Inc.
< V
2
2
min
C bus.
C bus.
(2.7V), the electrical
SS
and V
SS
.
DD
DD
.
or V
DD
SS
)
.