MCP4017 Datasheet, PDF (32/66 Pages) Microchip Technology – 7-Bit Single I2C™ Digital POT with Volatile Memory in SC70

MCP4017/18/19
TABLE 4-1: DEVICE FUNCTIONALITY AT EACH V_DD REGION (NOTE 1)
V_DD Level
Serial
Interface
Potentiometer
Terminals
Wiper Setting
Comment
V_DD < V_BOR < 1.8V Ignored “unknown”
V_BOR ≤ V_DD < 1.8V “Unknown” Operational with
reduced electrical
specs
Unknown
Wiper Register loaded
with POR/BOR value
1.8V ≤ V_DD < 2.7V Accepted
Operational with
reduced electrical
specs
Wiper Register
determines Wiper
Setting
Electrical performance may not
meet the data sheet specifications.
2.7V ≤ V_DD ≤ 5.5V Accepted Operational
Wiper Register
determines Wiper
Setting
Meets the data sheet specifications
Note 1: For system voltages below the minimum operating voltage, the customer will be recommended to use a
voltage supervisor to hold the system in reset. This will ensure that MCP4017/18/19 commands are not
attempted out of the operating range of the device.
Normal Operation Range
V_DD
Outside Specified
AC/DC Range
Normal Operation Range
2.7V
1.8V
V_POR/BOR
V_RAM
V_SS
Analog
Characteristics
not specified
Device’s Serial
Interface is
“Not Operational”
Analog
Characteristics not specified
V_BOR Delay
Wiper Forced to Default POR/BOR setting
FIGURE 4-1:
Power-up and Brown-out.
DS22147A-page 32
© 2009 Microchip Technology Inc.