參數(shù)資料
型號(hào): ML610Q412P-XXXWA
廠商: LAPIS SEMICONDUCTOR CO LTD
元件分類: 微控制器/微處理器
英文描述: RISC MICROCONTROLLER, UUC95
封裝: 2.83 MM X 2.63 MM, 0.35 MM HEIGHT, 0.80 MM PITCH, DIE-95
文件頁數(shù): 25/152頁
文件大小: 1641K
代理商: ML610Q412P-XXXWA
ML610Q411/ML610Q412/ML610Q415 User’s Manual
Chapter 8
Capture
8 – 7
8.3
Description of Operation
The capture circuit starts the capture operation by setting the ECAP0 or ECAP1 bit of the capture control register
(CAPCON).
When the input trigger from the P00 or P01 pin selected by the external interrupt control register 0 or 1 (EXICON0 or
EXICON1) is generated and the P00 or P01 interrupt request flag (QP00 or QP01) is set to “1”, the T4KHZ to T32HZ
signals of the low-speed time base counter (LTBC) are captured in the capture register 0 or 1 (CAPR0 or CAPR1) on
the next low-speed clock (LSCLK) falling edge and the at the same time, the capture flag (CAPF0 or CAPF1) of the
capture status register (CAPSTAT) is set to “1”.
When the capture flag (CAPF0, CAPF1) is “1”, the following capture operation stops.
After reading the value captured in the capture register 0 or 1 (CAPR0, CAPR1), perform write operation (write data is
meaningless) for the capture register 0 or 1 (CAPR0, CAPR1), clear the capture flag (CAPF0, CAPF1) to “0”, and wait
for the next P00 or P01 interrupt.
Figure 8-2 shows the timing of the capture operation.
Figure 8-2 Timing Diagram of Capture Operation
Note:
When CPU is operating at the high speed (HSCLK), check that the capture flag (CAPF0, CAPF1) is set to "1" after the
P00 or P01 interrupt request is generated and then read capture data register 0 or 1 (CAPR0, CAPR1).
System clock
SYSCLK
CAPF0, CAPF1
QP00, QP01
Interrupt request flag
P00 and P01 pins
LTBC
(T4KHZ to T32HZ)
CAPR0, CAPR1
LSCLK
N
N+1
Write CAPR0, 1
XX
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