Rainbow Electronics DS3501 - Manual (Page 6)

DS3501
High-Voltage, NV, I 2 C POT with Temp Sensor
and Lookup Table
6 _____________________________________________________________________
I 2 C
INTERFACE
WIPER
REGISTER/
INITIAL VALUE
REGISTER
(WR/IVR)
00h
V
CC
SDA
A0
A1
CONTROL
LOGIC/
REGISTERS
RH
RL
V+
POS 7Fh
POS 00h
GND
SCL
SEE BIT
RW
DS3501
Default Mode Block Diagram (Update Mode bit = 0)
I 2 C
INTERFACE
LUT
ADDRESS
REGISTER
CONTROL
LOGIC/
REGISTERS
ADC
V CC
SDA
A0
A1
GND
SCL
TEMP
SENSOR
V
CC
VOLTAGE
TEMP
0Ch
V CC (V)
0Eh
DATA
CONTROL
RH
RL
V+
POS 7Fh
POS 00h
RW
(LUTAR)
08h
36 BYTE
LOOKUP
TABLE
(LUT)
80h-A3h
WIPER
REGISTER
(WR)
09h*
INITIAL VALUE REGISTER
(IVR)
00h*
∑
ON POWER-UP
ONL
Y WHEN IN
LUT
-ADDER MODE
IVR
LUTVAL OR
LUTVAL+IVR
LUTVAL
*NOTE THAT WHEN IN LUT OR LUT ADDER MODE, WR IS ACCESSED THROUGH 09h (UNLIKE DEFAULT MODE) WHILE IVR REMAINS AT 00h.
DS3501
LUT and LUT Adder Mode Block Diagram (Update Mode bit = 1)
Block Diagrams