MCP47FVB01 datasheet(67/92 Pages) MICROCHIP

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 2015 Microchip Technology Inc.

DS20005405A-page 67

MCP47FVBXX

8.8

Serial Interface Communication

Times

Table 8-1 shows time/frequency of the supported

operations of the I2C serial interface for the different

serial interface operational frequencies. This, along

with the VOUT output performance (such as slew rate),

would be used to determine your application’s volatile

DAC register update rate.

TABLE 8-1:

SERIAL INTERFACE TIMES / FREQUENCIES

Command

# of Bit

Clocks

(1)

Data Update Rate

(8-bit/10-bit/12-bit)

(Data Words/Second)

Comments

Operation

Code

Mode

100

kHz

400 kHz

3.4 MHz(4)

Write Command

(Normal and High-

Voltage)(5)

(2)

Single

2,632

10,526

89,474

(2)

Continuous

27n +

3,559

14,235

120,996

For 10 data words

Read Command

(Normal and High-

Voltage)(5)

(2)

Random

2,083

8,333

70,833

(2)

Continuous

18n +

4,762

19,048

161,905

For 10 data words

(2)

Last

Address

3,448

13,793

117,241

General Call Reset

Command

——

(2)

Single

5,000

20,000

170,000

Note 3

General Call Wake-up

Command

——

(2)

Single

5,000

20,000

170,000

Note 3

Note 1:

“n” indicates the number of times the command operation is to be repeated.

This command can be either normal voltage or high voltage.

Determined by General Call command byte after the I2C General Call address.

There is a minimal overhead to enter into 3.4 MHz mode.

High-Voltage commands are supported for serial interface compatibility with the MCP47FEBXX devices.

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