MCP4441-503E/ST Microchip Technology, MCP4441-503E/ST Datasheet - Page 43
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MCP4441-503E/ST
Manufacturer Part Number
MCP4441-503E/ST
Description
IC DGTL POT 129TAPS QUAD 20TSSOP
Manufacturer
Microchip Technology
Datasheet
1.MCP4441-103EML.pdf
(100 pages)
Specifications of MCP4441-503E/ST
Taps
129
Resistance (ohms)
50K
Number Of Circuits
4
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
Package / Case
20-TSSOP (0.173", 4.40mm Width)
End To End Resistance
50kohm
Track Taper
Linear
Resistance Tolerance
± 20%
No. Of Steps
129
Supply Voltage Range
2.7V To 5.5V
Control Interface
I2C
No. Of Pots
Quad
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP4441-503E/ST
Manufacturer:
Microchip Technology
Quantity:
135
Part Number:
MCP4441-503E/ST
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
4.2.1
This memory can be grouped into two uses of
nonvolatile memory. These are:
•
•
The nonvolatile wipers start functioning below the
devices V
4.2.1.1
These locations allow the user to store up to 5 (9-bit)
locations worth of information.
4.2.1.2
These locations contain the wiper values that are
loaded into the corresponding volatile wiper register
whenever the device has a POR/BOR event. There are
four registers, one for each resistor network.
The nonvolatile wiper register enables stand-alone
operation of the device (without Microcontroller control)
after being programmed to the desired value.
4.2.1.3
The Nonvolatile Wiper values will be initialized to
mid-scale value. This is shown in
The General purpose EEPROM memory will be
programmed to a default value of 0x000.
It is good practice in the manufacturing flow to
configure the device to your desired settings.
TABLE 4-2:
© 2010 Microchip Technology Inc.
-502
-103
-503
-104
General Purpose Registers
Nonvolatile Wiper Registers
100.0 kΩ Mid scale
10.0 kΩ
50.0 kΩ
5.0 kΩ
POR
NONVOLATILE MEMORY
(EEPROM)
General Purpose Registers
Nonvolatile Wiper Registers
Factory Initialization of Nonvolatile
Memory (EEPROM)
/V
BOR
DEFAULT FACTORY
SETTINGS SELECTION
Mid scale
Mid scale
Mid scale
trip point.
8-bit 7-bit
80h
80h
80h
80h
Wiper
Table
Code
40h
40h
40h
40h
4-2.
Disabled
Disabled
Disabled
Disabled
4.2.1.4
There are 5 nonvolatile bits that are not directly
mapped into the address space. These bits control the
following functions:
• EEPROM Write Protect
• WiperLock Technology for Nonvolatile Wiper 0
• WiperLock Technology for Nonvolatile Wiper 1
• WiperLock Technology for Nonvolatile Wiper 2
• WiperLock Technology for Nonvolatile Wiper 3
The operation of WiperLock Technology is discussed in
Section 5.3. The state of the WL0, WL1, WL2, WL3,
and WP bits is reflected in the STATUS register (see
Register
EEPROM Write Protect
All internal EEPROM memory can be Write Protected.
When EEPROM memory is Write Protected, Write
commands to the internal EEPROM are prevented.
Write Protect (WP) can be enabled/disabled by two
methods. These are:
• External WP Hardware pin (MCP44X1 devices
• Nonvolatile configuration bit (WP)
High Voltage commands are required to enable and
disable the nonvolatile WP bit. These commands are
shown in
WiperLock Technology (High
To write to EEPROM, both the external WP pin and the
internal WP EEPROM bit must be disabled. Write
Protect does not block commands to the volatile
registers.
4.2.2
There are seven Volatile Memory locations. These are:
• Volatile Wiper 0
• Volatile Wiper 1
• Volatile Wiper 2
• Volatile Wiper 3
• Status Register
• Terminal Control (TCON0) Register 0
• Terminal Control (TCON)1 Register 1
The volatile memory starts functioning at the RAM
retention voltage (V
only)
4-1).
Section 7.8 “Modify Write Protect or
VOLATILE MEMORY (RAM)
Special Features
MCP444X/446X
RAM
).
Voltage)”.
DS22265A-page 43