PCF85103C2D Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
PCF85103C2D Datasheet PDF : 20 Pages
| |||
Philips Semiconductors
6. Pinning information
6.1 Pinning
PCF85103C-2
256 × 8-bit CMOS EEPROM with I2C-bus interface
A0 1
A1 2
A2 3
VSS 4
Fig 2. Pin conï¬guration.
8 VDD
7 N.C.
6 SCL
5 SDA
002aaa251
6.2 Pin description
Table 3:
Symbol
A0
A1
A2
VSS
SDA
SCL
N.C.
VDD
Pin description
Pin
1
2
3
4
5
6
7
8
Description
address input 0
address input 1
address input 2
negative supply voltage
serial data input/output (I2C-bus)
serial clock input (I2C-bus)
no connect
positive supply voltage
7. Device addressing
Table 4: Device address code
Selection
Device code
Bit
b7[1]
b6
b5
b4
Device
0
0
1
0
[1] The Most Signiï¬cant Bit (MSB) ‘b7’ is sent ï¬rst.
Chip Enable
R/W
b3
b2
b1
b0
A2
A1
A0
R/W
A2, A1, A0 are hardware selectable pins.
A system could have up to eight PCF85103C-2 devices on the same I2C-bus,
equivalent to a 16 kbit EEPROM or 8 pages of 256 bytes of memory.
The eight addresses are deï¬ned by the state of the A0, A1, A2 inputs (logic level ‘1’
when connected to VDD, logic level ‘0’ when connected to GND). Figure 3 shows the
various address combinations.
9397 750 09646
Product data
Rev. 02 — 09 May 2002
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
4 of 20
Share Link: 