Texas Instruments MSC1210 - Manual (Page 48)

SFR Definitions
3-12
ADCON0/ADCON1 (ADC Control 0 and 1, Addresses DC
H
/DD
H
): These
two SFRs allow the user program to configure various aspects of the ADC.
ADCON2/ADCON3 (ADC Controls 2 and 3, Addresses DE
H
/DF
H
): These
two SFRs control the decimation rate of the ADC; in other words, they control
the frequency at which sampled data will be provided to the user program via
the ADRES SFRs.
ACC (Accumulator, Addresses E0
H
, Bit−Addressable): The accumulator is
one of the most-used SFRs, because it is involved in so many instructions. The
accumulator resides as an SFR at E0
H
, which means the instruction MOV A,#20h
is the same as MOV E0h,#20h. However, it is a good idea to use the first method
because it only requires two bytes, whereas the second option requires three
bytes.
SSCON (Summation/Shift Control, Address E1
H
): This SFR controls
what action is taken in regards to summation registers
SUMR0/SUMR1/SUMR2/SUMR3.
SUMR0/SUMR1/SUMR2/SUMR3 (Summation Registers 0/1/2/3, Address-
es E2
H
/E3
H
/E4
H
/E5
H
): These four registers, together, make up a 32-bit
summation value for the ADC. Writing a value to the least significant byte
(SUMR0) will cause the values in the other three summation registers to be
added to the summation result.
ODAC (Offset DAC Register, Address E6
H
): This SFR allows the MSC1210
to shift the input by up to half of the ADC input range.
LVDCON (Low-Voltage Detection Control, Address E7
H
): The LVDCON
SFR configures the low-voltage detection on both the analog and digital sup-
plies. In both cases, the LVDCON allows the user program to specify the trip
voltage below which the low-voltage detection will be triggered.
EIE (Extended Interrupt Enable, Address E8
H
, Bit-Addressable): This
SFR configures whether or not the extended interrupts are enabled, including
the watchdog and external interrupts 2 through 5.
HWPC0/HWPC1 (Hardware Product Code, Addresses E9
H
/EA
H
): These
two SFRs are read-only and can provide the user program with information
regarding the part number version and how much flash memory is available
on the part.
FMCON (Flash Memory Control, Address EE
H
): This SFR controls certain
aspects of the flash memory, including page erase and byte write operation.
FRCM controls power saving for flash memory read operations when the
MSC1210 is running at a low clock frequency. It also includes a bit that indi-
cates whether or not flash memory is currently idle or busy with a prior memory
access operation.