PIC12F615 datasheet(64/168 Pages) MICROCHIP

64 / 168 page

PIC12F609/615/12HV609/615

DS41302A-page 62

Preliminary

VRCON: VOLTAGE REFERENCE CONTROL REGISTER

R/W-0

U-0

R/W-0

CMVREN

—

VRR

FVREN

VR3

VR2

VR1

VR0

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

CMVREN: Comparator Voltage Reference Enable bit(1, 2)

= CVREF circuit powered on and routed to CVREF input of the Comparator

= 0.6 Volt constant reference routed to CMVREF input of the Comparator

bit 6

Unimplemented: Read as ‘0’

bit 5

VRR: CVREF Range Selection bit

= Low range

= High range

bit 4

FVREN: 0.6V Reference Enable bit(2)

= Enabled

= Disabled

bit 3-0

VR<3:0>: Comparator Voltage Reference CVREF Value Selection bits (0

≤ VR<3:0> ≤ 15)

When VRR = 1: CVREF = (VR<3:0>/24) * VDD

When VRR = 0: CVREF = VDD/4 + (VR<3:0>/32) * VDD

Note 1:

When CMVREN is low, the CVREF circuit is powered down and does not contribute to IDD current.

When CMVREN is low and the FVREN bit is low, the CMVREF signal should provide Vss to the comparator.

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