MCP4341-103E/ST Microchip Technology, MCP4341-103E/ST Datasheet - Page 56

• Manufacturer Part Number: MCP4341-103E/ST
• Description: IC DGTL POT QUAD 10K 20TSSOP
• Manufacturer: Microchip Technology
• Series: WiperLock™r

Specifications of MCP4341-103E/ST

• Memory Type: Non-Volatile
• Taps: 129
• Resistance (ohms): 10K
• Number Of Circuits: 4
• Temperature Coefficient: 150 ppm/°C Typical
• Interface: SPI Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Resistance In Ohms: 10K
• End To End Resistance: 10kohm
• Track Taper: Linear
• No. Of Steps: 129
• Supply Voltage Range: 2.7V To 5.5V
• Control Interface: Serial, SPI
• No. Of Pots: Quad
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MCP434X/436X
7.7
The Increment Command is an 8-bit command. The
Increment Command can only be issued to volatile
memory locations. The format of the command is
shown in
An Increment Command to the volatile memory
location changes that location after a properly
formatted command (8-clocks) have been received.
Increment commands provide a quick and easy
method to modify the value of the volatile wiper location
by +1 with minimal overhead.
FIGURE 7-6:
SDI and SDO States.
DS22233A-page 56
SDI
SDO
Note:
Note 1: Only functions when writing the volatile
A
D
3
1
1
Increment Wiper
2: Valid Address/Command combination.
3: Invalid Address/Command combination
4: If a Command Error (CMDERR) occurs
Normal and High Voltage
Figure
(INCR COMMAND (n+1))
Table 7-2
the Increment Wiper command. Other
addresses are invalid.
A
D
2
1
1
wiper registers (AD3:AD0) 0h and 1h.
all following SDO bits will be low until the
CMDERR condition is cleared.
(the CS pin is forced to the inactive
state).
at this bit location (*), then all following
SDO bits will be driven low until the CS
pin is driven inactive (V
COMMAND BYTE
7-6.
D
A
1
1
1
D
A
0
1
1
shows the valid addresses for
Increment Command -
0
1
1
1
1 1* 1 Note 1, 2
1
X
0
IH
X
0 Note 1, 3
).
7.7.1
Typically, the CS pin starts at the inactive state (V
but may be already be in the active state due to the
completion of another command.
Figure 6-4
waveforms for a single increment. The increment
operation requires that the CS pin be in the active state
(V
state (V
The 8-bit Increment Command (Command Byte) is
then clocked in on the SDI pin by the SCK pins. The
SDO pin drives the CMDERR bit on the 7th clock.
The wiper value will increment up to 100h on 8-bit
devices and 80h on 7-bit devices. After the wiper value
has reached Full Scale (8-bit =100h, 7-bit =80h), the
wiper value will not be incremented further. If the Wiper
register has a value between 101h and 1FFh, the
Increment command is disabled. See
additional information on the Increment Command
versus the current volatile wiper value.
The Increment operations only require the Increment
command byte while the CS pin is active (V
for a single increment.
After the wiper is incremented to the desired position,
the CS pin should be forced to V
unexpected transitions on the SCK pin do not cause
the wiper setting to change. Driving the CS pin to V
should occur as soon as possible (within device
specifications) after the last desired increment occurs.
TABLE 7-4:
Current Wiper
3FFh
081h
080h
07Fh
041h
040h
03Fh
001h
000h
7-bit
IL
Pot
or V
Setting
IH
IHH
) and is driven to the active state (V
). Typically, the CS pin will be in the inactive
3FFh
0FFh
07Fh
8-bit
101h
100h
080h
000h
SINGLE INCREMENT
Pot
081
001
through
INCREMENT OPERATION VS.
VOLATILE WIPER VALUE
Reserved
(Full Scale (W = A))
Full Scale (W = A)
W = N
W = N (Mid Scale)
W = N
Zero Scale (W = B)
© 2009 Microchip Technology Inc.
Properties
Figure 6-5
Wiper (W)
IH
show
to ensure that
Table 7-4
Command
Operates?
Increment
IL
IL
or V
Yes
Yes
possible
or V
No
No
IHH
IHH
IH
for
IH
),
).
)