MCP47CMB02 datasheet(70/124 Pages) MICROCHIP

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MCP47CXBXX

DS20006089B-page 70

 2018-2019 Microchip Technology Inc.

6.7

Device I2C Slave Addressing

The address byte is the first byte received following the

Start (or Repeated Start) condition from the Master device

(see Figure 6-2). For nonvolatile devices, the seven bits of

the I2C Slave address are user-programmable. The

default address is ‘110 0000’. If the address pins are

present on the specific package, the lower two bits of

the address are determined by the state of the A1 and

A0 pins.

For volatile devices (MCP47CVBXX), the I2C Slave

address bits, A6:A0, are fixed (‘110 0000’). The user

still has Slave address programmability with the A1:A0

address pins (if available on the package).

FIGURE 6-2:

Slave Address Bits in the

I2C Control Byte.

Table 6-1 shows the four standard orderable I2C Slave

addresses and their respective device order codes.

6.7.1

CUSTOM I2C SLAVE ADDRESS

OPTIONS

Custom I2C Slave address options can be requested.

Users can request the custom I2C Slave address via

the Nonstandard Customer Authorization Request

(NSCAR) process.

6.8

Slope Control

The slope control on the SDA output is different

between the Fast/Standard Speed and the High-Speed

Clock modes of the interface.

6.9

Pulse Gobbler

The pulse gobbler on the SCL pin is automatically

adjusted to suppress spikes <10 ns during HS mode.

Note:

Address bits, A6:A0, are MTP and can

be programmed

during

the

user’s

manufacturing flow.

Start Bit

Read/Write Bit

Address Byte

R/W ACK

Acknowledge Bit

Slave Address

A6 A5 A4 A3

Slave Address (7 bits)

A2 A1 A0

Default

Factory

Address

(Note 1)

Note 1:

Address bits (A6:A0) can be

programmed by the user

(MCP47CMBXX devices). Bits A1 and

A0 are determined by either the MTP

bits or the A0 and A1 pin values if

present on the package.

TABLE 6-1:

I2C ADDRESS/ORDER CODE

Default

7-Bit I2C

Address

Device Order

Code(1)

Memory

Tape

and

Reel

VOL

‘1100000’

MCP47CXBXX-E/XX

MCP47CXBXXT-E/XX

Note 1:

Nonvolatile devices’ I2C Slave address can

be reprogrammed by the end user.

Note:

Non-Recurring Engineering (NRE) charges

and minimum ordering requirements for

custom orders. Please contact Microchip

sales for additional information.

A custom device will be assigned custom

device marking.

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