M68EVB908GB60E Freescale Semiconductor, M68EVB908GB60E Datasheet - Page 233
M68EVB908GB60E
Manufacturer Part Number
M68EVB908GB60E
Description
BOARD EVAL FOR MC9S08GB60
Manufacturer
Freescale Semiconductor
Type
MCUr
Datasheet
1.M68EVB908GB60E.pdf
(290 pages)
Specifications of M68EVB908GB60E
Contents
Module and Misc Hardware
Processor To Be Evaluated
MC9S08GB
Data Bus Width
8 bit
Interface Type
RS-232
Silicon Manufacturer
Freescale
Core Architecture
HCS08
Core Sub-architecture
HCS08
Silicon Core Number
MC9S08
Silicon Family Name
S08GB
Kit Contents
GB60 Evaluation Kit
Rohs Compliant
Yes
For Use With/related Products
MC9S08GB60
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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CCF — Conversion Complete Flag
ATDIE — ATD Interrupt Enabled
ATDCO — ATD Continuous Conversion
ATDCH — Analog Input Channel Select
Freescale Semiconductor
The CCF is a read-only bit which is set each time a conversion is complete. The CCF bit is cleared
whenever the ATD1SC register is written. It is also cleared whenever the result registers, ATD1RH or
ATD1RL, are read.
When this bit is set, an interrupt is generated upon completion of an ATD conversion. At this time, the
result registers contain the result data generated by the conversion. The interrupt will remain pending
as long as the conversion complete flag CCF is set. If the ATDIE bit is cleared, then the CCF bit must
be polled to determine when the conversion is complete. Note that system reset clears pending
interrupts.
When this bit is set, the ATD will convert samples continuously and update the result registers at the
end of each conversion. When this bit is cleared, only one conversion is completed between writes to
the ATD1SC register.
This field of bits selects the analog input channel whose signal is sampled and converted to digital
codes.
1 = Current conversion is complete.
0 = Current conversion is not complete.
1 = ATD interrupt enabled.
0 = ATD interrupt disabled.
1 = Continuous conversion mode.
0 = Single conversion mode.
Table 14-5
lists the coding used to select the various analog input channels.
Table 14-5. Analog Input Channel Select Coding
ATDCH
08–1D
1E
1F
00
01
02
03
04
05
06
07
MC9S08GB/GT Data Sheet, Rev. 2.3
Reserved (default to V
Analog Input Channel
V
V
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
REFH
REFL
REFL
)
ATD Registers and Control Bits
233
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