mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 683

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

30.7.2 CMP Control Register 1 (CMPx_CR1)
Addresses: CMP0_CR1 is FFFF_8530h base + 1h offset = FFFF_8531h
Freescale Semiconductor, Inc.
Reserved
PMODE
COS
Reset
Field
OPE
Read
WE
INV
Write
SE
7
6
5
4
3
2
1
Bit
SE
Sample Enable
At any given time, either SE or WE can be set. If a write to this register attempts to set both, then SE is
set and WE is cleared. However, avoid writing ones to both bit locations because this "11" case is
reserved and may change in future implementations.
0
1
Windowing Enable
At any given time, either SE or WE can be set. If a write to this register attempts to set both, then SE is
set and WE is cleared. However, avoid writing ones to both bit locations because this "11" case is
reserved and may change in future implementations.
0
1
This read-only bit is reserved and always has the value zero.
Power Mode Select
0
1
Comparator INVERT
This bit allows you to select the polarity of the analog comparator function. It is also driven to the COUT
output (on both the device pin and as SCR[COUT]) when CR1[OPE]=0.
0
1
Comparator Output Select
0
1
Comparator Output Pin Enable
7
0
Sampling mode not selected.
Sampling mode selected.
Windowing mode not selected.
Windowing mode selected.
Low Speed (LS) comparison mode selected.
High Speed (HS) comparison mode selected.
Does not invert the comparator output.
Inverts the comparator output.
Set CMPO to equal COUT (filtered comparator output).
Set CMPO to equal COUTA (unfiltered comparator output).
WE
0
6
MCF51JF128 Reference Manual, Rev. 2, 03/2011
CMPx_CR1 field descriptions
Table continues on the next page...
0
0
5
Preliminary
PMODE
0
4
Description
INV
0
3
COS
0
2
Chapter 30 Comparator (CMP)
OPE
0
1
EN
0
0
683