MCP47CMB02 datasheet(76/124 Pages) MICROCHIP

76 / 124 page

MCP47CXBXX

DS20006089B-page 76

 2018-2019 Microchip Technology Inc.

7.5.4

CONTINUOUS WRITES TO

VOLATILE MEMORY

A Continuous Write mode of operation is possible when

writing to the device’s Volatile Memory registers (see

Table 7-2). This Continuous Write mode allows writes

without a Stop or Restart condition, or repeated trans-

missions of the I2C control byte. Figure 7-3 shows the

sequence for three continuous writes. The writes do not

need to be to the same volatile memory address. The

sequence ends with the Master sending a Stop or

Restart condition.

7.5.5

CONTINUOUS WRITES TO

NONVOLATILE MEMORY

If a continuous write is attempted on nonvolatile

memory, the missing Stop condition will cause the

command to be an error condition (A) on all following

bytes. A Start bit is required to reset the command state

machine.

FIGURE 7-2:

I2C ACK/NACK Behavior (Write Command Example).

TABLE 7-2:

VOLATILE MEMORY

ADDRESSES

Address

Single Channel

Dual Channel

00h

Yes

01h

Yes

08h

Yes

09h

Yes

0Ah

Yes

Note:

All bytes are ignored and not transferred

to memory.

Write 1 Word Command

Slave Address

Command

Data Byte

Master

Example 1 (No Command Error)

Master

S 1 1 0 0 0 0 0 01 0 0 0 0 1 0 0 x1 d d d d d d d d1 d d d d d d d d1 P

MCP47CXBXX

000

I2C Bus

S 1 1 0 0 0 0 0 00 0 0 0 0 1 0 0 x0 d d d d d d d d0 d d d d d d d d0 P

Example 2 (Command Error)

Master

S 1 1 0 0 0 0 0 01 0 1 1 1 1 0 0 x1 d d d d d d d d1 d d d d d d d d1 P

MCP47CXBXX

011

I2C Bus

S 1 1 0 0 0 0 0 00 0 1 1 1 1 0 0 x0 d d d d d d d d1 d d d d d d d d1 P

Note: Once a command error has occurred (Example 2), the MCP47CVBXX will NACK until a Start condition occurs.

MCP47CMB02 Datasheet(PDF) 76 Page - Microchip Technology

MCP47CMB02 Datasheet(HTML) 76 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL