MCP41050-I/SN Microchip Technology, MCP41050-I/SN Datasheet - Page 20

• Manufacturer Part Number: MCP41050-I/SN
• Description: IC POT DIGITAL 50K 1CH SPI 8SOIC
• Manufacturer: Microchip Technology

Specifications of MCP41050-I/SN

• Package / Case: 8-SOIC (3.9mm Width)
• Taps: 256
• Resistance (ohms): 50K
• Number Of Circuits: 1
• Temperature Coefficient: 800 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Resistance In Ohms: 50K
• Number Of Pots: Single
• Taps Per Pot: 256
• Resistance: 50 KOhms
• Buffered Wiper: Buffered
• Digital Interface: Serial
• Operating Supply Voltage: 2.7 V to 5.5 V
• Supply Current: 340 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Description/function: 256 Step SPI 50k Ohm with SPI Interface
• Mounting Style: SMD/SMT
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP41XXX/42XXX
FIGURE 5-4:
DS11195C-page 20
Clock-In the command and
data for Device 2 (16 more
clocks). The data that was pre-
viously loaded gets shifted to
the next device on the chain.
Clock-In the data for Device 1
(16 more clocks). The data that
was previously loaded into
Device 1 gets shifted into
Device 2 and Device 3 contains
the first byte loaded. Raise the
CS line to execute the com-
mands for all 3 devices at the
same time.
Start by setting CS low and
clocking in the command and
data that will end up in Device
3 (16 clocks).
If you want to load the following
command/data into each part
in the chain.
Microcontroller
EXAMPLE:
Daisy-Chain Configuration.
CS
SCK
SO
XX10XX11
XX10XX00
XX01XX10
XX10XX11
Device 1
Device 1
Device 1
Device 1
* Last device on a daisy-chain may be a single channel MCP41XXX device.
CS
SCK
SI
Device 1
11001100
10101010
11110000
11001100
SO
XX01XX10
00000000
XX10XX00
XX01XX10
CS
SCK
SI
Device 2
Device 2
Device 2
Device 2
Device 2
11110000
00000000
10101010
11110000
SO
XX10XX00
00000000
00000000
XX10XX00
2003 Microchip Technology Inc.
CS
SCK
SI
After 32 clocks, Device 2 has
the data previously loaded
into Device 1 and Device 3
gets 16 more zeros.
After 48 clocks, all 3 devices
have the proper command/
data loaded into their shift
registers.
After 16 clocks, Device 2 and
Device 3 will both have all
zeros clocked in from the
previous part’s shift register.
Device 3*
Device 3
Device 3
Device 3
Device 3
10101010
00000000
00000000
10101010