MCP4151T-503ESLASHML datasheet(50/88 Pages) MICROCHIP

50 / 88 page

MCP413X/415X/423X/425X

DS22060B-page 50

7.4

Continuous Commands

The device supports the ability to execute commands

continuously. While the CS pin is in the active state

(VIL or VIHH). Any sequence of valid commands may be

received.

The following example is a valid sequence of events:

CS pin driven active (VIL or VIHH).

Read Command.

Increment Command (Wiper 0).

Decrement Command (Wiper 1).

Write Command.

CS pin driven inactive (VIH).

TABLE 7-3:

COMMANDS

Note 1: It is recommended that while the CS pin is

active, only one type of command should

be issued. When changing commands, it

is recommended to take the CS pin

inactive then force it back to the active

state.

2: It is also recommended that long

command strings should be broken down

into shorter command strings. This

reduces the probability of noise on the

SCK pin corrupting the desired SPI

command string.

Command Name

# of Bits

High Voltage

(VIHH) on CS

pin?

Write Data

16-Bits

—

Read Data

16-Bits

—

Increment Wiper

8-Bits

—

Decrement Wiper

8-Bits

—

High Voltage Write Data

16-Bits

Yes

High Voltage Read Data

16-Bits

Yes

High Voltage Increment Wiper

8-Bits

Yes

High Voltage Decrement Wiper

8-Bits

Yes

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