Datasheet

MCP3911
DS22286A-page 62 © 2012 Microchip Technology Inc.
7.9 VREFCAL Register – Internal
Voltage Reference Temperature
Coefficient Adjustment Register
This register is only for advanced users. This register
should not be written unless the user wants to calibrate
the temperature coefficient of the whole system or
application. The default value of this register is set to
0x42.
REGISTER 7-9: VREFCAL REGISTER
Name Bits Address Cof
VREFCAL 8
0x1A
R/W
R/W-0 R/W-1 R/W-0 R/W-0 R/W-0 R/W-0 R/W-1 R/W-0
VREFCAL<7> VREFCAL<6> VREFCAL<5> VREFCAL<4> VREFCAL<3> VREFCAL<2> VREFCAL<1> VREFCAL<0>
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 7:0 Internal Voltage Temperature coefficient register value. (See Section 5.7.3 “Temperature
compensation (VREFCAL register)” for complete description).