DSPIC30F2010-30I/SPG Microchip Technology, DSPIC30F2010-30I/SPG Datasheet - Page 87

• Manufacturer Part Number: DSPIC30F2010-30I/SPG
• Description: 16BIT 30MIPS DSPIC, 30F2010, DIP28
• Manufacturer: Microchip Technology
• Series: DsPIC30Fr

Specifications of DSPIC30F2010-30I/SPG

• Core Frequency: 30MHz
• Embedded Interface Type: I2C, SPI, UART
• No. Of I/o's: 20
• Flash Memory Size: 12KB
• Supply Voltage Range: 2.5V To 5.5V
• Operating Temperature Range: -40°C To
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12.0
This section describes the Input Capture module and
associated operational modes. The features provided
by this module are useful in applications requiring Fre-
quency (Period) and Pulse measurement. Figure 12-1
depicts a block diagram of the Input Capture module.
Input capture is useful for such modes as:
• Frequency/Period/Pulse Measurements
• Additional sources of External Interrupts
FIGURE 12-1:
12.1
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>).
 2004 Microchip Technology Inc.
Note: This data sheet summarizes the features of this family of dsPIC30F devices and is not intended to be a complete reference
source. For complete information on the CPU, peripherals, register descriptions and general device functionality, please refer to the
dsPIC30F Family Reference Manual (DS70046). For complete information on the device instruction set and programming, please
refer to the dsPIC30F Programmer’s Reference Manual (DS70030). For device pinouts and electrical specifications, please refer to
the specific data sheet for the device that will be used in your design.
ICx
Pin
Note:
INPUT CAPTURE MODULE
Simple Capture Event Mode
Where ‘x’ is shown, reference is made to the registers or bits associated to the respective input
capture channels 1 through N.
Prescaler
1, 4, 16
3
INPUT CAPTURE MODE BLOCK DIAGRAM
Data Bus
ICxCON
Mode Select
ICM<2:0>
ICBNE, ICOV
Synchronizer
Clock
Advance Information
ICI<1:0>
Detection
Edge
Logic
The key operational features of the Input Capture
module are:
• Simple Capture Event mode
• Timer2 and Timer3 mode selection
• Interrupt on input capture event
These operating modes are determined by setting the
appropriate bits in the ICxCON register (where x =
1,2,...,N). The dsPIC devices contain up to 8 capture
channels, (i.e., the maximum value of N is 8).
12.1.1
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.
Interrupt
Logic
From GP Timer Module
Set Flag
Set Flag
ICxIF
ICxIF
FIFO
Logic
CAPTURE PRESCALER
R/W
T2_CNT
dsPIC30F
1
ICxBUF
16
DS70082E-page 85
0
T3_CNT
16
ICTMR