Datasheet

© 2009 Microchip Technology Inc. DS22153C-page 35
MCP9843/98243
5.3 MCP98243 EEPROM FEATURE
DESCRIPTION
5.3.1 BYTE WRITE
To write a byte in the MCP98243 EEPROM, the master
has to specify the memory location or address. Once
the address byte is transmitted correctly followed by a
word address, the word address is stored in the
EEPROM address pointer. The following byte is data
to be stored in the specified memory location. Figure 5-
13 shows the timing diagram.
FIGURE 5-13: Timing Diagram for Byte Write (See Section 4.0 “Serial Communication”).
SDA
A
C
K
1010
A
A
C
K
S
2
A
1
A
0
12345678 12345678
SCL
Address Byte
W
MCP98243
MCP98243
A
C
K
P
12345678
Data
Word Address
MCP98243
XXXXX
XX X XX XXX
XXX