PCF8598C-2P02 Philips Semiconductors, PCF8598C-2P02 Datasheet - Page 5

• Manufacturer Part Number: PCF8598C-2P02
• Description: 1024 8-bit CMOS EEPROM with I2C-bus interface
• Manufacturer: Philips Semiconductors

Philips Semiconductors
7. Device addressing
9397 750 14219
Product data
Table 5:
[1]
A2 is the hardware selectable pin, A1 and A0 are software selectable pins.
A system could have up to two PCF8598C-2 devices on the same I
to a 16 kbit EEPROM, or 2 devices of 1024 bytes of memory, or 8 pages of 256 bytes
of memory.
A1 and A0 select a 256 byte page (one of the four pages available) on the selected
device. The device is selected by bit A2.
page combinations.
Selection
Bit
Device
Fig 3. Device addressing.
The Most Significant Bit (MSB) ‘b7’ is sent first.
Device address code
b7
Rev. 06 — 22 October 2004
1
[1]
I
2
Device code
b6
C-BUS
0
1024
PCF8598C-2
DEVICE 1
PCF8598C-2
DEVICE 2
b5
1
256-BYTE PAGE 4
256-BYTE PAGE 3
256-BYTE PAGE 2
256-BYTE PAGE 1
256-BYTE PAGE 4
256-BYTE PAGE 3
256-BYTE PAGE 2
256-BYTE PAGE 1
8-bit CMOS EEPROM with I
Figure 3
002aaa256
b4
0
shows the various address and
A2
A2
b3
0
0
0
0
1
1
1
1
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Chip Enable
A1
1
1
0
0
1
1
0
0
PCF8598C-2
A1
b2
A0
1
0
1
0
1
0
1
0
2
C-bus, equivalent
2
C-bus interface
A0
b1
R/W
R/W
b0
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