MAX5432LETA+T Maxim Integrated Products, MAX5432LETA+T Datasheet - Page 11

• Manufacturer Part Number: MAX5432LETA+T
• Description: IC POT DGTL 32-TAP NV I2C 8-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX5432LETA+T

• Taps: 32
• Resistance (ohms): 50K
• Number Of Circuits: 1
• Temperature Coefficient: 35 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TDFN Exposed Pad
• Resistance In Ohms: 50K
• Number Of Pots: Single
• Taps Per Pot: 32
• Resistance: 50 KOhms
• Wiper Memory: Non Volatile
• Digital Interface: Serial (2-Wire, I2C)
• Operating Supply Voltage: 5 V
• Supply Current: 0.002 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Description/function: 32-Tap, Nonvolatile, I2C, Linear, Digital Potentiometers, 50kohm Resistor Divider
• Mounting Style: SMD/SMT
• Supply Voltage (max): 5.25 V
• Supply Voltage (min): 2.7 V
• Tolerance: 25 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MAX5432LETA+T

The internal EEPROM consists of a 5-bit nonvolatile
register that retains the value written to it before the
device is powered down. The nonvolatile register is
programmed with the zeros at the factory. Wait a mini-
mum of 12ms after writing to NVREG before sending
another command.
Upon power-up, the MAX5432–MAX5435 load the data
stored in the nonvolatile memory register into the
volatile memory register, updating the wiper position
Figure 5. Bit Transfer
Figure 7. Command Byte Received
Figure 8. Command and Single Data Byte Received
SDA
SCL
S
HOW COMMAND BYTE AND DATA BYTE MAP
INTO MAX5432–MAX5435's REGISTERS
DATA STABLE,
DATA VALID
S
COMMAND BYTE IS STORED ON
RECEIPT OF STOP CONDITION
SLAVE ADDRESS
______________________________________________________________________________________
CHANGE OF
DATA ALLOWED
32-Tap, Nonvolatile, I
ACKNOWLEDGE FROM
MAX5432–MAX5435
NOP/W
ADDRESS
SLAVE
Nonvolatile Memory
0
ACKNOWLEDGE FROM
MAX5432–MAX5435
A
NOP/W
D15 D14 D13 D12 D11 D10
Power-Up
ACKNOWLEDGE FROM
0
MAX5432–MAX5435
COMMAND BYTE
A
D15
with the data stored in the nonvolatile memory register.
This initialization period takes 20µs.
The MAX5432–MAX5435 feature a low-power standby
mode. When the device is not being programmed, it
goes into standby mode and current consumption is
typically 0.5µA.
Figure 6. Acknowledge
SCL
SDA
D14
CONDITION
D9
START
D13
D8
COMMAND BYTE
A
D12
2
1
C, Linear, Digital
D7
D11
Potentiometers
ACKNOWLEDGE FROM
D6
MAX5432–MAX5435
ACKNOWLEDGE FROM
D10
2
MAX5432–MAX5435
D5
D4
D9
DATA BYTE
BYTE
NOT ACKNOWLEDGE
D3
1
D8
ACKNOWLEDGE
X
8
ACKNOWLEDGMENT
CLOCK PULSE FOR
A
X
P
X
9
Standby
A
P
11