參數(shù)資料
型號: MC68HC05P4ADWR3
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: PLASTIC, SOIC-28
文件頁數(shù): 63/102頁
文件大小: 930K
代理商: MC68HC05P4ADWR3
Timer
Timer Status Register
MC68HC05P4A — Rev. 6.0
Advance Information
MOTOROLA
Timer
63
Bits 2, 3, and 4 — Not used
Always read 0
8.7 Timer Status Register
The timer status register (TSR) is a read-only register containing three
status flag bits.
ICF — Input Capture Flag Bit
1 = Flag set when selected polarity edge is sensed by input capture
edge detector
0 = Flag cleared when TSR and input capture low register ($15) are
accessed
OCF — Output Compare Flag Bit
1 = Flag set when output compare register contents match the
free-running counter contents
0 = Flag cleared when TSR and output compare low register ($17)
are accessed
TOF — Timer Overflow Flag Bit
1 = Flag set when free-running counter transition from $FFFF to
$0000 occurs
0 = Flag cleared when TSR and counter low register ($19) are
accessed
Bits 0–4 — Not used
Always read 0
Address:
$0013
Bit 7
654321
Bit 0
Read:
ICF
OCF
TOF
00000
Write:
Reset:
U
00000
= Unimplemented
Figure 8-3. Timer Status Register (TSR)
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