DSPIC30F2020-30I/SP Microchip Technology Inc., DSPIC30F2020-30I/SP Datasheet - Page 99
DSPIC30F2020-30I/SP
Manufacturer Part Number
DSPIC30F2020-30I/SP
Description
DSP, 16-Bit, 12KB Flash, 512 RAM, 21 I/O, SDIP-28
Manufacturer
Microchip Technology Inc.
Type
DSPr
Datasheet
1.DSPIC30F2023-30IPT.pdf
(286 pages)
Specifications of DSPIC30F2020-30I/SP
A/d Inputs
8-Channels, 10-Bit
Comparators
4
Cpu Speed
30 MIPS
Eeprom Memory
0 Bytes
Input Output
21
Interface
I2C/SPI/UART
Ios
21
Memory Type
Flash
Number Of Bits
16
Package Type
28-pin SPDIP
Programmable Memory
12K Bytes
Ram Size
512 Bytes
Timers
3-16-bit, 1-32-bit
Voltage, Range
3-5.5
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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10.0
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 10-1
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 10-1:
© 2006 Microchip Technology Inc.
Note: This data sheet summarizes features of this group
of dsPIC30F devices and is not intended to be a complete
reference source. For more information on the CPU,
peripherals, register descriptions and general device
functionality, refer to the “dsPIC30F Family Reference
Manual” (DS70046).
ICx
Pin
Note:
INPUT CAPTURE MODULE
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
ICI<1:0>
Preliminary
Detection
Logic
Edge
From General Purpose Timer Module
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 DSC devices contain up to 8
capture channels, (i.e., the maximum value of N is 8).
Interrupt
Logic
Note:
dsPIC30F1010/202X
Set Flag
Set Flag
ICxIF
ICxIF
The dsPIC30F1010 devices does not fea-
ture a Input Capture module. The
dsPIC30F202X devices have one capture
input – IC1. The naming of this capture
channel is intentional and preserves soft-
ware compatibility with other dsPIC DSC
devices.
FIFO
Logic
R/W
T2_CNT
1
ICxBUF
16
DS70178C-page 97
0
T3_CNT
16
ICTMR
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