MCP4441-104E/ST Microchip Technology, MCP4441-104E/ST Datasheet - Page 71

• Manufacturer Part Number: MCP4441-104E/ST
• Description: IC DGTL POT 129TAPS QUAD 20TSSOP
• Manufacturer: Microchip Technology

Specifications of MCP4441-104E/ST

• Taps: 129
• Resistance (ohms): 100K
• 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: 100kohm
• 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

7.8
These commands are special cases of the High
Voltage
Increment Wiper
memory locations 02h, 03h, 08h, 09h, and 0Fh. This
command is used to enable or disable either the
software Write Protect, wiper 0 WiperLock Technology,
wiper 1 WiperLock Technology, wiper 2 WiperLock
Technology, or wiper 3 WiperLock Technology.
6
command and the result of those commands on the
nonvolatile WP, WL0, or WL1 bits.
TABLE 7-6:
© 2010 Microchip Technology Inc.
Note 1:
shows the memory addresses, the High Voltage
0Bh - 0Eh
Address
Memory
0Ah
04h
05h
00h
01h
02h
03h
06h
07h
08h
09h
0Fh
Modify Write Protect or WiperLock
Technology (High Voltage)
Decrement Wiper
Enable and Disable
(1)
(1)
(1)
Reserved addresses: Increment or Decrement commands are invalid for these addresses.
(1)
ADDRESS MAP TO MODIFY WRITE PROTECT AND WIPERLOCK TECHNOLOGY
High Voltage
Wiper 0 register is decremented
Wiper 1 register is decremented
WL0 is enabled
WL1 is enabled
TCON0 register not changed
STATUS register not changed
Wiper 2 register is decremented
Wiper 3 register is decremented
WL2 is enabled
WL3 is enabled
TCON1 register not changed
Reserved
WP is enabled
commands to the nonvolatile
and the High Voltage
Decrement Wiper
Table 7-
Commands and Results
7.8.1
Figure 7-9
the formats for a single Modify Write Protect or
Wiper-Lock Technology command.
A Modify Write Protect or WiperLock Technology
Command will only start an EEPROM write cycle (t
after a properly formatted Command has been
received and the Stop condition occurs.
During an EEPROM write cycle, only serial commands
to Volatile memory (addresses 00h, 01h, 04h, and 05h)
are accepted. All other serial commands are ignored
until the EEPROM write cycle (t
allows the Host Controller to operate on the Volatile
Wiper registers and the TCON register, and to Read
the Status Register. The EEWA bit in the Status register
indicates the status of an EEPROM Write Cycle.
High Voltage
Wiper 0 register is incremented
Wiper 1 register is incremented
WL0 is disabled
WL1 is disabled
TCON0 register not changed
STATUS register not changed
Wiper 2 register is incremented
Wiper 3 register is incremented
WL2 is disabled
WL3 is disabled
TCON1 register not changed
Reserved
WP is disabled
(Disable) and
SINGLE MODIFY (ENABLE OR
DISABLE) WRITE PROTECT OR
WIPERLOCK TECHNOLOGY (HIGH
VOLTAGE)
MCP444X/446X
Increment Wiper
Figure 7-10
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DS22265A-page 71
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