MCP79412 datasheet(40/66 Pages) MICROCHIP

40 / 66 page

MCP79410/MCP79411/MCP79412

DS20002266H-page 40

 2010-2016 Microchip Technology Inc.

6.2.3

EEPROM SEQUENTIAL WRITE

The write control byte, word address, and the first data

byte are transmitted to the MCP7941X in the same way

as in a byte write. But instead of generating a Stop

condition, the master transmits up to seven additional

bytes, which are temporarily stored in the on-chip page

buffer and will be written into memory after the master

has transmitted a Stop condition.

After receipt of each word, the three lower Address

Pointer bits are internally incremented by one. If the

master should transmit more than eight bytes prior to

generating the Stop condition, the address counter will

roll over and the data received previously will be over-

written. As with the byte write operation, once the Stop

condition is received, an internal write cycle will begin

(Figure 6-7).

FIGURE 6-6:

EEPROM BYTE WRITE

FIGURE 6-7:

EEPROM PAGE WRITE

BUS ACTIVITY

MASTER

SDA LINE

BUS ACTIVITY

CONTROL

BYTE

ADDRESS

BYTE

DATA

S 101 0

1 11

BUS ACTIVITY

MASTER

SDA LINE

BUS ACTIVITY

CONTROL

BYTE

ADDRESS

BYTE

DATA BYTE 0

DATA BYTE 7

S 1 010

111

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