DS1855 DALLAS [Dallas Semiconductor], DS1855 Datasheet - Page 3

• Manufacturer Part Number: DS1855
• Description: Dual Nonvolatile Digital Potentiometer and Secure Memory
• Manufacturer: DALLAS [Dallas Semiconductor]

DS1855 BLOCK DIAGRAM Figure 1
Up to eight DS1855s can be installed on a single 2-wire bus. Access to an individual device is achieved
by using a device address that is determined by the logic levels of address pins A0 through A2.
Additionally, the DS1855 will operate from 3V or 5V supplies. Three package options are available: 14-
pin TSSOP, 16-ball STPBGA, and flip-chip package.
V
GND
SDA
SCL
WP
A0
A1
A2
CC
2-WIRE
INTERFACE
CONTROL
DATA
248 BYTES
EEPROM
MEMORY
1 BYTE WIPER
SETTING
POT 0
1 BYTE WIPER
SETTING
POT 1
CONFIGURATION
BYTE
LOCK BYTE
LOCK BYTE
RESERVED
3 of 20
POTENTIOMETER 0
POTENTIOMETER 1
Position
Position
100-
256-
Pot
Pot
H0
W0
L0
H1
W1
L1