MCP453X/455X/463X/465X
7/8-Bit Single/Dual I
2
C Digital POT with
Volatile Memory
Features
• Single or Dual Resistor Network options
• Potentiometer or Rheostat configuration options
• Resistor Network Resolution
- 7-bit: 128 Resistors (129 Steps)
- 8-bit: 256 Resistors (257 Steps)
• R
AB
Resistances options of:
- 5 kΩ
- 10 kΩ
- 50 kΩ
- 100 kΩ
• Zero-Scale to Full-Scale Wiper operation
• Low Wiper Resistance: 75Ω (typical)
• Low Tempco:
- Absolute (Rheostat): 50 ppm typical
(0°C to 70°C)
- Ratiometric (Potentiometer): 15 ppm typical
• I
2
C Serial interface
- 100 kHz, 400 kHz and 3.4 MHz support
• Serial protocol allows:
- High-Speed Read/Write to wiper
- Increment/Decrement of wiper
• Resistor Network Terminal Disconnect Feature
via the Terminal Control (TCON) Register
• Brown-out reset protection (1.5V typical)
• Serial Interface Inactive current (2.5 uA typical)
• High-Voltage Tolerant Digital Inputs: Up to 12.5V
• Wide Operating Voltage:
- 2.7V to 5.5V - Device Characteristics Specified
- 1.8V to 5.5V - Device Operation
• Wide Bandwidth (-3dB) Operation:
- 2 MHz (typical) for 5.0 kΩ device
• Extended temperature range (-40°C to +125°C)
Description
The MCP45XX and MCP46XX devices offer a wide
range of product offerings using an I
2
C interface. This
family of devices support 7-bit and 8-bit resistor
networks, Volatile memory configurations, and Potenti-
ometer and Rheostat pinouts.
Package Types (top view)
MCP45X1
Single Potentiometer
HVC / A0
SCL
SDA
V
SS
1
2
3
4
8
7
6
5
V
DD
P0B
P0W
P0A
MCP45X2
Single Rheostat
HVC / A0
SCL
SDA
V
SS
1
2
3
4
8
7
6
5
V
DD
A1
P0B
P0W
MSOP
HVC / A0 1
SCL 2
SDA 3
V
SS
4
EP
9
8 V
DD
7 A1
6 P0B
5 P0W
HVC / A0 1
SCL 2
SDA 3
V
SS
4
MSOP
8 V
DD
EP
9
7 A1
6 P0B
5 P0W
DFN 3x3 (MF) *
DFN 3x3 (MF) *
MCP46X1
Dual Potentiometers
HVC/A0
SCL
SDA
V
SS
P1B
P1W
P1A
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
DD
A1
A2
NC
P0B
P0W
P0A
HVC/A0
V
DD
A1
A2
16 15 14 13
SCL
SDA
V
SS
V
SS
1
2
3
4
EP
17
5 6 7 8
P1B
P1W
P1A
P0A
12 NC
11 NC
10 P0B
9 P0W
TSSOP
QFN-16 4x4 (ML) *
MCP46X2
Dual Rheostat
HVC/A0
SCL
SDA
V
SS
P1B
1
2
3
4
5
10 V
DD
HVC / A0 1
9 A1
SCL 2
8 P0B
SDA 3
7 P0W
V
SS
4
6 P1W
P1B 5
10 V
DD
EP
11
9
8
7
6
A1
P0B
P0W
P1W
MSOP
DFN 3x3 (MF) *
* Includes Exposed Thermal Pad (EP); see
Table 3-1.
©
2008 Microchip Technology Inc.
DS22096A-page 1
MCP453X/455X/463X/465X
Device Block Diagram
V
DD
V
SS
A2
A1
HVC/A0
SCL
I
2
C Interface
SDA
Power-up/
Brown-out
Control
I
2
C
Serial
Interface
Module &
Control
Logic
(WiperLock™
Technology)
P0A
Resistor
Network 0
(Pot 0)
Wiper 0
& TCON
Register
P0W
P0B
P1A
Resistor
Network 1
(Pot 1)
Wiper 1
& TCON
Register
P1W
Memory (16x9)
Wiper0 (V & NV)
Wiper1 (V & NV)
TCON
Reserved
P1B
For Dual Resistor Network
Devices Only
Device Features
WiperLock
Technology
POR Wiper
Setting
# of Steps
# of POTs
Control
Interface
Memory
Type
Resistance (typical)
R
AB
Options (kΩ)
Wiper
- R
W
(Ω)
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
Wiper
Configuration
V
DD
Operating
Range
(2)
Device
MCP4531
(3)
MCP4532
(3)
MCP4541
MCP4542
MCP4551
(3)
MCP4552
(3)
MCP4561
MCP4562
MCP4631
(3)
MCP4632
(3)
MCP4641
MCP4642
MCP4651
(3)
MCP4652
(3)
MCP4661
MCP4662
Note 1:
2:
3:
1 Potentiometer
(1)
1
1
1
1
1
2
2
2
2
Rheostat
Potentiometer
(1)
Rheostat
Rheostat
Rheostat
(1)
I
2
C
I C
I
2
C
I
2
C
I
2
C
I
2
C
I
2
C
I
2
C
I C
I
2
C
I
2
C
I
2
C
I
2
C
I
2
C
I C
I
2
C
2
2
2
RAM
RAM
EE
EE
RAM
RAM
EE
EE
RAM
RAM
EE
EE
RAM
RAM
EE
EE
No
No
Yes
Yes
No
No
Yes
Yes
No
No
Yes
Yes
No
No
Yes
Yes
Mid-Scale 5.0, 10.0, 50.0, 100.0
Mid-Scale 5.0, 10.0, 50.0, 100.0
NV Wiper 5.0, 10.0, 50.0, 100.0
NV Wiper 5.0, 10.0, 50.0, 100.0
Mid-Scale 5.0, 10.0, 50.0, 100.0
Mid-Scale 5.0, 10.0, 50.0, 100.0
NV Wiper 5.0, 10.0, 50.0, 100.0
NV Wiper 5.0, 10.0, 50.0, 100.0
Mid-Scale 5.0, 10.0, 50.0, 100.0
Mid-Scale 5.0, 10.0, 50.0, 100.0
NV Wiper 5.0, 10.0, 50.0, 100.0
NV Wiper 5.0, 10.0, 50.0, 100.0
Mid-Scale 5.0, 10.0, 50.0, 100.0
Mid-Scale 5.0, 10.0, 50.0, 100.0
NV Wiper 5.0, 10.0, 50.0, 100.0
NV Wiper 5.0, 10.0, 50.0, 100.0
129 1.8V to 5.5V
129 1.8V to 5.5V
129 2.7V to 5.5V
129 2.7V to 5.5V
257 1.8V to 5.5V
257 1.8V to 5.5V
257 2.7V to 5.5V
257 2.7V to 5.5V
129 1.8V to 5.5V
129 1.8V to 5.5V
129 2.7V to 5.5V
129 2.7V to 5.5V
257 1.8V to 5.5V
257 1.8V to 5.5V
257 2.7V to 5.5V
257 2.7V to 5.5V
1 Potentiometer
(1)
1 Potentiometer
(1)
2 Potentiometer
Rheostat
Rheostat
Rheostat
(1)
2 Potentiometer
(1)
2 Potentiometer
(1)
2 Potentiometer
Rheostat
Floating either terminal (A or B) allows the device to be used as a Rheostat (variable resistor).
Analog characteristics only tested from 2.7V to 5.5V unless otherwise noted.
Please check Microchip web site for device release and availability
DS22096A-page 2
©
2008 Microchip Technology Inc.
MCP453X/455X/463X/465X
1.0
ELECTRICAL
CHARACTERISTICS
† Notice:
Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
Absolute Maximum Ratings †
Voltage on V
DD
with respect to V
SS
............... -0.6V to +7.0V
Voltage
on HVC/A0, A1, A2, SCL, and SDA
with respect
to V
SS .............................................................................
-0.6V to 12.5V
Voltage on all other pins (PxA, PxW, and PxB)
with respect to V
SS .........................................
-0.3V to V
DD
+ 0.3V
Input clamp current, I
IK
(V
I
< 0, V
I
> V
DD
, V
I
> V
PP ON
HV pins) ......................±20 mA
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
DD
) ..................................................±20 mA
Maximum output current sunk by any Output pin
......................................................................................25 mA
Maximum output current sourced by any Output pin
......................................................................................25 mA
Maximum current out of V
SS
pin .................................100 mA
Maximum current into V
DD
pin ....................................100 mA
Maximum current into P
X
A, P
X
W & P
X
B pins ............±2.5 mA
Storage temperature ....................................-65°C to +150°C
Ambient temperature with power applied
-40°C to +125°C
Total power dissipation (Note
1)
................................400 mW
Soldering temperature of leads (10 seconds) ............. +300°C
ESD protection on all pins
.................................. ≥
4 kV (HBM),
..........................................................................
≥
300V (MM)
Maximum Junction Temperature (T
J
) ......................... +150°C
Note 1:
Power dissipation is calculated as follows:
P
DIS
= V
DD
x {I
DD
-
∑
I
OH
} +
∑
{(V
DD
-V
OH
) x I
OH
} +
∑(V
OL
x I
OL
)
©
2008 Microchip Technology Inc.
DS22096A-page 3
MCP453X/455X/463X/465X
AC/DC CHARACTERISTICS
Standard Operating Conditions (unless otherwise specified)
Operating Temperature
–40°C
≤
T
A
≤
+125°C (extended)
DC Characteristics
All parameters apply across the specified operating ranges unless noted.
V
DD
= +2.7V to 5.5V, 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ devices.
Typical specifications represent values for V
DD
= 5.5V, T
A
= +25°C.
Sym
V
DD
V
HV
Min
2.7
1.8
HVC pin Voltage
Range
V
SS
V
SS
V
DD
Start Voltage
to ensure Wiper
Reset
V
DD
Rise Rate to
ensure Power-on
Reset
Delay after device
exits the reset state
(V
DD
> V
BOR
)
Supply Current
(Note 10)
V
BOR
—
Typ
—
—
—
—
—
Max
5.5
2.7
12.5V
V
DD
+
8.0V
1.65
Units
V
V
V
V
V
Serial Interface only.
V
DD
≥
The HVC pin will be at one
4.5V of three input levels
V < (V
IL
, V
IH
or V
IHH
). (Note
6)
DD
Parameters
Supply Voltage
Conditions
4.5V
RAM retention voltage (V
RAM
) < V
BOR
V
DDRR
(Note
9)
V/ms
T
BORD
—
10
20
µs
I
DD
—
—
600
µA
Serial Interface Active,
HVC/A0 = V
IH
(or V
IL
) (Note
11)
Write all 0’s to Volatile Wiper 0
V
DD
= 5.5V, F
SCL
= 3.4 MHz
Serial Interface Active,
HVC/A0 = V
IH
(or V
IL
) (Note
11)
Write all 0’s to Volatile Wiper 0
V
DD
= 5.5V, F
SCL
= 100 kHz
Serial Interface Inactive,
(Stop condition, SCL = SDA = V
IH
),
Wiper = 0
V
DD
= 5.5V, HVC/A0 = V
IH
—
—
250
µA
—
2.5
5
µA
Note 1:
2:
3:
4:
5:
6:
7:
Resistance is defined as the resistance between terminal A to terminal B.
INL and DNL are measured at V
W
with V
A
= V
DD
and V
B
= V
SS
.
MCP4XX1
only.
MCP4XX2
only, includes V
WZSE
and V
WFSE
.
Resistor terminals A, W and B’s polarity with respect to each other is not restricted.
This specification by design.
Non-linearity is affected by wiper resistance (R
W
), which changes significantly overvoltage and
temperature.
8:
The
MCP4XX1
is externally connected to match the configurations of the
MCP45X2
and
MCP46X2,
and
then tested.
9:
POR/BOR is not rate dependent.
10:
Supply current is independent of current through the resistor network
11:
When HVC/A0 = V
IHH
, the I
DD
current is less due to current into the HVC/A0 pin. See I
PU
specification
DS22096A-page 4
©
2008 Microchip Technology Inc.
MCP453X/455X/463X/465X
AC/DC CHARACTERISTICS (CONTINUED)
Standard Operating Conditions (unless otherwise specified)
Operating Temperature
–40°C
≤
T
A
≤
+125°C (extended)
DC Characteristics
All parameters apply across the specified operating ranges unless noted.
V
DD
= +2.7V to 5.5V, 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ devices.
Typical specifications represent values for V
DD
= 5.5V, T
A
= +25°C.
Sym
R
AB
Min
4.0
8.0
40.0
80.0
Resolution
Step Resistance
N
R
S
—
—
Nominal
Resistance Match
|R
AB0
- R
AB1
| /
R
AB
|R
BW0
- R
BW1
|
/ R
BW
Wiper Resistance
(Note
3, Note 4)
Nominal
Resistance
Tempco
Ratiometeric
Tempco
Resistor Terminal
Input Voltage
Range (Terminals
A, B and W)
Note 1:
2:
3:
4:
5:
6:
7:
R
W
ΔR
AB
/ΔT
—
—
—
—
—
—
—
ΔV
WB
/ΔT
V
A,
V
W,
V
B
—
Vss
Typ
5
10
50
100
257
129
R
AB
/
(256)
R
AB
/
(128)
0.2
0.25
75
75
50
100
150
15
—
—
—
1.25
1.5
160
300
—
—
—
—
V
DD
Max
6.0
12.0
60.0
120.0
Units
kΩ
kΩ
kΩ
kΩ
Taps
Taps
Ω
Ω
%
%
Ω
Ω
Conditions
-502 devices
(Note 1)
-103 devices
(Note 1)
-503 devices
(Note 1)
-104 devices
(Note 1)
8-bit
7-bit
8-bit
7-bit
No Missing Codes
No Missing Codes
Note 6
Note 6
Parameters
Resistance
(± 20%)
MCP46X1
devices only
MCP46X2
devices only,
Code = Full-Scale
V
DD
= 5.5 V, I
W
= 2.0 mA, code = 00h
V
DD
= 2.7 V, I
W
= 2.0 mA, code = 00h
ppm/°C T
A
= -20°C to +70°C
ppm/°C T
A
= -40°C to +85°C
ppm/°C T
A
= -40°C to +125°C
ppm/°C Code = Midscale (80h or 40h)
V
Note 5, Note 6
Resistance is defined as the resistance between terminal A to terminal B.
INL and DNL are measured at V
W
with V
A
= V
DD
and V
B
= V
SS
.
MCP4XX1
only.
MCP4XX2
only, includes V
WZSE
and V
WFSE
.
Resistor terminals A, W and B’s polarity with respect to each other is not restricted.
This specification by design.
Non-linearity is affected by wiper resistance (R
W
), which changes significantly overvoltage and
temperature.
8:
The
MCP4XX1
is externally connected to match the configurations of the
MCP45X2
and
MCP46X2,
and
then tested.
9:
POR/BOR is not rate dependent.
10:
Supply current is independent of current through the resistor network
11:
When HVC/A0 = V
IHH
, the I
DD
current is less due to current into the HVC/A0 pin. See I
PU
specification
©
2008 Microchip Technology Inc.
DS22096A-page 5
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