MC9S08GT16CFB Freescale Semiconductor, MC9S08GT16CFB Datasheet - Page 233
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MC9S08GT16CFB
Manufacturer Part Number
MC9S08GT16CFB
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S08GT16CFB.pdf
(290 pages)
Specifications of MC9S08GT16CFB
Cpu Family
HCS08
Device Core Size
8b
Frequency (max)
20MHz
Interface Type
SCI/SPI
Program Memory Type
Flash
Program Memory Size
16KB
Total Internal Ram Size
1KB
# I/os (max)
36
Number Of Timers - General Purpose
4
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
2.08V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Package Type
PQFP
Lead Free Status / Rohs Status
Not 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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