MCP4017/18/19
DS22147A-page 32
2009 Microchip Technology Inc.
TABLE 4-1:
DEVICE FUNCTIONALITY AT EACH VDD REGION (NOTE 1) FIGURE 4-1:
Power-up and Brown-out.
VDD Level
Serial
Interface
Potentiometer
Terminals
Wiper Setting
Comment
VDD < VBOR < 1.8V Ignored
“unknown”
Unknown
VBOR ≤ VDD < 1.8V “Unknown” Operational with
reduced electrical
specs
Wiper Register loaded
with POR/BOR value
1.8V
≤ VDD < 2.7V Accepted Operational with
reduced electrical
specs
Wiper Register
determines Wiper
Setting
Electrical performance may not
meet the data sheet specifications.
2.7V
≤ VDD ≤ 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.
VPOR/BOR
VSS
VDD
2.7V
Outside Specified
Normal Operation Range
Device’s Serial
Wiper Forced to Default POR/BOR setting
VBOR Delay
Normal Operation Range
1.8V
Interface is
“Not Operational”
AC/DC Range
Analog
Characteristics
not specified
Analog
Characteristics not specified
VRAM