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參數(shù)資料
| 型號： | MB95F564KPF-G-JNE2 |
| 廠商： | Fujitsu Semiconductor America Inc |
| 文件頁數(shù)： | 81/84頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU 8BIT 20KB FLASH 20TSSOP |
| 標(biāo)準(zhǔn)包裝： | 1,225 |
| 系列： | 8FX MB95560H |
| 核心處理器： | F²MC-8FX |
| 芯體尺寸： | 8-位 |
| 速度： | 16MHz |
| 連通性： | LIN，UART/USART |
| 外圍設(shè)備： | LVD. POR，PWM，WDT |
| 輸入/輸出數(shù)： | 17 |
| 程序存儲器容量： | 20KB（20K x 8） |
| 程序存儲器類型： | 閃存 |
| RAM 容量： | 496 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.4 V ~ 5.5 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 6x8/10b |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 包裝： | 托盤 |
| 其它名稱： | 865-1239 |
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dsPIC30F4011/4012
DS70135G-page 82
2010 Microchip Technology Inc.
12.1
Simple Capture Event Mode
The simple capture events in the dsPIC30F product
family are:
Capture every falling edge
Capture every rising edge
Capture every 4th rising edge
Capture every 16th rising edge
Capture every rising and falling edge
These simple Input Capture modes are configured by
setting the appropriate bits ICM<2:0> (ICxCON<2:0>).
12.1.1
CAPTURE PRESCALER
There are four input capture prescaler settings, speci-
fied by bits, ICM<2:0> (ICxCON<2:0>). Whenever the
capture channel is turned off, the prescaler counter will
be cleared. In addition, any Reset will clear the
prescaler counter.
12.1.2
CAPTURE BUFFER OPERATION
Each capture channel has an associated FIFO buffer
which is four, 16-bit words deep. There are two status
flags which provide status on the FIFO buffer:
ICBNE – Input Capture Buffer Not Empty
ICOV – Input Capture Overflow
The ICBNE bit will be set on the first input capture event
and remain set until all capture events have been read
from the FIFO. As each word is read from the FIFO, the
remaining words are advanced by one position within
the buffer.
In the event that the FIFO is full with four capture
events, and a fifth capture event occurs prior to a read
of the FIFO, an overflow condition will occur and the
ICOV bit will be set to a logic ‘1’. The fifth capture event
is lost and is not stored in the FIFO. No additional
events will be captured till all four events have been
read from the buffer.
If a FIFO read is performed after the last read and no
new capture event has been received, the read will
yield indeterminate results.
12.1.3
TIMER2 AND TIMER3 SELECTION
MODE
Each capture channel can select between one of two
timers for the time base, Timer2 or Timer3.
Selection of the timer resource is accomplished
through SFR bit, ICTMR (ICxCON<7>). Timer3 is the
default timer resource available for the input capture
module.
12.1.4
HALL SENSOR MODE
When the input capture module is set for capture on
every edge, rising and falling, ICM<2:0> = 001, the fol-
lowing operations are performed by the input capture
logic:
The input capture interrupt flag is set on every
edge, rising and falling.
The interrupt on Capture mode setting bits,
ICI<1:0>, is ignored, since every capture
generates an interrupt.
A capture overflow condition is not generated in
this mode.
12.2
Input Capture Operation During
Sleep and Idle Modes
An input capture event will generate a device wake-up
or interrupt, if enabled, if the device is in CPU Idle or
Sleep mode.
Independent of the timer being enabled, the input
capture module will wake-up from the CPU Sleep or Idle
mode when a capture event occurs, if ICM<2:0> = 111
and the interrupt enable bit is asserted. The same wake-
up can generate an interrupt if the conditions for
processing the interrupt have been satisfied. The wake-
up feature is useful as a method of adding extra external
pin interrupts.
12.2.1
INPUT CAPTURE IN CPU SLEEP
MODE
CPU Sleep mode allows input capture module opera-
tion with reduced functionality. In the CPU Sleep
mode, the ICI<1:0> bits are not applicable, and the
input capture module can only function as an external
interrupt source.
The capture module must be configured for interrupt
only on the rising edge (ICM<2:0> = 111) in order for
the input capture module to be used while the device
is in Sleep mode. The prescale settings of 4:1 or 16:1
are not applicable in this mode.
12.2.2
INPUT CAPTURE IN CPU IDLE
MODE
CPU Idle mode allows input capture module operation
with full functionality. In the CPU Idle mode, the interrupt
mode selected by the ICI<1:0> bits are applicable, as
well as the 4:1 and 16:1 capture prescale settings which
are defined by control bits ICM<2:0>. This mode
requires the selected timer to be enabled. Moreover, the
ICSIDL bit must be asserted to a logic ‘0’.
If
the
input
capture
module
is
defined
as
ICM<2:0> = 111 in CPU Idle mode, the input capture
pin will serve only as an external interrupt pin.
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