MCP4641-503E/ST Microchip Technology, MCP4641-503E/ST Datasheet - Page 57

• Manufacturer Part Number: MCP4641-503E/ST
• Description: IC DGTL POT 50K 256TAPS 14-TSSOP
• Manufacturer: Microchip Technology

Specifications of MCP4641-503E/ST

• Package / Case: 14-TSSOP
• Taps: 129
• Resistance (ohms): 50K
• 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: 50K
• Number Of Pots: Dual
• Taps Per Pot: 128
• Resistance: 50 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

7.2
Only the Read Command and the Write Command
have Data Byte(s).
The Write command concatenates the 8-bits of the
Data Byte with the one data bit (D8) contained in the
Command Byte to form 9-bits of data (D8:D0). The
Command Byte format supports up to 9-bits of data so
that the 8-bit resistor network can be set to Full-Scale
(100h or greater). This allows wiper connections to
Terminal A and to Terminal B. The D9 bit is currently
unused.
TABLE 7-3:
© 2008 Microchip Technology Inc.
Write Data
Read Data
Increment Wiper
Decrement Wiper
High Voltage
High Voltage
High Voltage
High Voltage
Modify Write Protect or WiperLock
Technology (High Voltage)
Modify Write Protect or WiperLock
Technology (High Voltage)
Note 1:
2:
3:
Data Byte
This command will only complete, if wiper is “unlocked” (WiperLock Technology is Disabled).
If the command is executed using address 02h or 03h, that corresponding wiper is locked or
if with address 0Fh, then Write Protect is enabled.
If the command is executed using with address 02h or 03h, that corresponding wiper is unlocked or
if with address 0Fh, then Write Protect is disabled.
Command Name
Write Data
Read Data
Increment Wiper
Decrement Wiper
COMMANDS
- Enable
- Disable
EEPROM
Value in
Writes
Yes
—
—
Yes
—
—
—
—
—
—
(2)
(3)
MCP454X/456X/464X/466X
(1)
Operates on
Non-Volatile
Volatile Only
Volatile Only
Volatile Only
Volatile Only
Non-Volatile
Non-Volatile
memory
Volatile/
Only
Only
Both
Both
Both
Both
7.3
If the four address bits received (AD3:AD0) and the two
command bits received (C1:C0) are a valid combina-
tion, the MCP4XXX will Acknowledge the I
If the address bits and command bits are an invalid
combination, then the MCP4XXX will Not Acknowledge
the I
Once an error condition has occurred, any following
commands are ignored until the I
Start Condition.
7.3.1
A Restart or Stop condition in the expected data bit
position will abort the current command sequence and
data will not be written to the MCP4XXX.
(2)
(3)
2
C bus.
Error Condition
HVC pin?
(V
ABORTING A TRANSMISSION
Voltage
High
IHH
Yes
Yes
Yes
Yes
Yes
Yes
—
—
—
—
) on
unprotected
WiperLock or
Write Protect
protected
unlocked
unlocked
unlocked
unlocked
unchanged
unchanged
unchanged
unchanged
Impact on
unlocked/
locked/
2
C bus is reset with a
(1)
(1)
(1)
(1)
(2)
DS22107A-page 57
(3)
2
“locked”?
C bus.
Wiper is
Works
when
Yes
Yes
Yes
No
No
No
No
No
No
No