mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 645

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor, Inc.
REFSEL
ACREN
DMAEN
ACFGT
Field
1–0
4
3
2
0
1
Compare function greater than enable
ACFGT configures the compare function to check the conversion result relative to the compare value
register(s) (CV1 and CV2) based upon the value of ACREN. The ACFE bit must be set for ACFGT to
have any effect.
0
1
Compare function range enable
ACREN configures the compare function to check if the conversion result of the input being monitored is
either between or outside the range formed by the compare value registers (CV1 and CV2) determined by
the value of ACFGT.{27}The ACFE bit must be set for ACFGT to have any effect.
0
1
DMA enable
0
1
Voltage reference selection
REFSEL bits select the voltage reference source used for conversions.
00
01
10
11
Compare function disabled.
Compare function enabled.
Configures less than threshold, outside range not inclusive and inside range not inclusive functionality
based on the values placed in the CV1 and CV2 registers.
Configures greater than or equal to threshold, outside range inclusive and inside range inclusive
functionality based on the values placed in the CV1 and CV2 registers.
Range function disabled.{27} Only the compare value 1 register (CV1) is compared.
Range function enabled.{27} Both compare value registers (CV1 and CV2) are compared.
DMA is disabled.
DMA is enabled and will assert the ADC DMA request during a ADC conversion complete event noted
by the assertion of any of the ADC COCO flags.
Default voltage reference pin pair (External pins V REFH and V REFL )
Alternate reference pair (V ALTH and V ALTL ). This pair may be additional external pins or internal
sources depending on MCU configuration. Consult the module introduction for information on the
Voltage Reference specific to this MCU.
Reserved
Reserved
ADCx_SC2 field descriptions (continued)
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Preliminary
Description
Chapter 29 Analog-to-Digital Converter (ADC)
645