參數(shù)資料
型號： MCM16Y1BGCFT16
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, MICROCONTROLLER, PQFP160
封裝： QFP-160
文件頁數(shù)： 138/138頁
文件大?。?/td> 784K
代理商： MCM16Y1BGCFT16
MC68HC16Y1
MOTOROLA
MC68HC16Y1TS/D
99
ADSTAT contains information related to the status of a conversion sequence.
SCF — Sequence Complete Flag
0 = Sequence not complete
1 = Sequence complete
SCF is set at the end of the conversion sequence when SCAN is cleared, and at the end of the first
conversion sequence when SCAN is set. SCF is cleared when ADCTL1 is written and a new conversion
sequence begins.
CCTR[2:0] — Conversion Counter Field
This field reflects the contents of the conversion counter pointer in either four or eight count conversion
sequence. The value corresponds to the number of the next result register to be written, and thus indi-
cates which channel is being converted.
CCF[7:0] — Conversion Complete Field
Each bit in this field corresponds to an A/D result register (CCF7 to RSLT7, etc.). A bit is set when con-
version for the corresponding channel is complete, and remains set until the result register is read. It is
cleared when the register is read.
RSLT0–RSLT7 — A/D Result Registers
$YFF710–$YFF73E
The result registers are used to store data after conversion is complete. Each register can be read from
three different addresses in the register block. Data format depends on the address from which it is
read.
RJURR — Unsigned Right-Justified Format
$YFF710–$YFF71F
Conversion result is unsigned right-justified data. Bits [9:0] are used for 10-bit resolution, bits [7:0] are
used for 8-bit conversion (bits [9:8] are zero). Bits [15:10] always return zero when read.
LJSRR — Signed Left-Justified Format
$YFF720–$YFF72F
Conversion result is signed left-justified data. Bits [15:6] are used for 10-bit resolution, bits [15:8] are
used for 8-bit conversion (bits [7:6] are zero). Although the ADC is unipolar, it is assumed that the zero
point is halfway between low and high reference when this format is used — for positive input, bit 15 =
0, for negative input, bit 15 = 1. Bits [5:0] always return zero when read.
LJURR — Unsigned Left-Justified Format
$YFF730–$YFF73F
Conversion result is unsigned left-justified data. Bits [15:6] are used for 10-bit resolution, bits [15:8] are
used for 8-bit conversion (bits [7:6] are zero). Bits [5:0] always return zero when read.
ADSTAT — ADC Status Register
$YFF70E
15
14
11
10
8
7
0
SCF
NOT USED
CCTR
CCF
RESET:
0
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