MCP4342T-503E/ST Microchip Technology, MCP4342T-503E/ST Datasheet - Page 47
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MCP4342T-503E/ST
Manufacturer Part Number
MCP4342T-503E/ST
Description
IC DGTL POT QUAD 50K 14TSSOP
Manufacturer
Microchip Technology
Series
WiperLock™r
Datasheet
1.MCP4361-503EML.pdf
(80 pages)
Specifications of MCP4342T-503E/ST
Taps
129
Resistance (ohms)
50K
Number Of Circuits
4
Temperature Coefficient
150 ppm/°C Typical
Memory Type
Non-Volatile
Interface
SPI Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
14-TSSOP
Resistance In Ohms
50K
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP4342T-503E/ST
Manufacturer:
MICROCHIP
Quantity:
12 000
7.0
The MCP43XX’s SPI command format supports 16
memory address locations and four commands. Each
command has two modes. These are:
• Normal Serial Commands
• High-Voltage Serial Commands
Normal serial commands are those where the CS pin is
driven to V
CS pin is driven to V
possible commands. These commands are shown in
Table
The
Decrement Wiper
Byte, see
Data
Byte and a Data Byte. The Command Byte contains
two data bits, see
Table 7-2
memory location and the corresponding values on the
SDI and SDO pins.
Table 7-3
and their interaction with other device features.
FIGURE 7-1:
© 2009 Microchip Technology Inc.
D
A
3
Memory
Address
and
7-1.
8-bit
A
D
2
8-bit Command
Command Byte
DEVICE COMMANDS
Write Data
shows an overview of all the SPI commands
A
D
shows the supported commands for each
1
IL
Figure
. With High-Voltage Serial Commands, the
A
D
commands
0
Command
C
1
Bits
7-1, while 16-bit commands
Figure
C
commands) contain a Command
0
IHH
commands) contain a Command
General SPI Command Formats.
D
Data
Bits
9
. In each mode, there are four
7-1.
D
8
(Increment
A
D
3
Memory
Address
D
Wiper
A
2
Command Byte
D
A
1
D
(Read
A
0
Command
and
C
1
Bits
C
16-bit Command
0
D
9
D
8
7.1
The Command Byte has three fields, the Address, the
Command, and 2 Data bits, see
only one of the data bits is defined (D8). This is for the
Write command.
The device memory is accessed when the master
sends a proper Command Byte to select the desired
operation. The memory location getting accessed is
contained in the Command Byte’s AD3:AD0 bits. The
action desired is contained in the Command Byte’s
C1:C0 bits, see
desired memory location will be read, written,
Incremented (wiper setting +1) or Decremented (wiper
setting -1). The Increment and Decrement commands
are only valid on the volatile wiper registers, and in
High Voltage commands to enable/disable WiperLock
Technology and Software Write Protect.
As the Command Byte is being loaded into the device
(on the SDI pin), the device’s SDO pin is driving. The
SDO pin will output high bits for the first six bits of that
command. On the 7th bit, the SDO pin will output the
CMDERR
Condition”). The 8th bit state depends on the
command selected.
TABLE 7-1:
D
C1:C0
States
7
Bit
11
00
01
10
Note 1: High Voltage Increment and Decrement
D
6
D
5
Data
Bits
Data Byte
Command Byte
Command
Read Data
Write Data
Increment
Decrement
D
4
commands on select non-volatile memory
locations
Technology and the software Write
Protect feature.
bit
D
3
MCP434X/436X
D
2
Table
state
COMMAND BIT OVERVIEW
(1)
D
1
(1)
D
0
7-1. C1:C0 determines if the
enable/disable
(see
16-Bits Both
16-Bits Both
8-Bits
8-Bits
Bits
# of
Command
Section 7.3
Figure
Bits
C C
1 0
1 0 = DECR
1 1 = Read Data
0 0 = Write Data
0 1 = INCR
Operates on
Volatile/
Non-Volatile
memory
Volatile Only
Volatile Only
DS22233A-page 47
7-1. Currently
WiperLock
“Error