DSPIC30F3010-30I/SO Microchip Technology Inc., DSPIC30F3010-30I/SO Datasheet - Page 148
DSPIC30F3010-30I/SO
Manufacturer Part Number
DSPIC30F3010-30I/SO
Description
16 BIT MCU/DSP 28LD 30MIPS 24 KB FLASH
Manufacturer
Microchip Technology Inc.
Type
DSPr
Datasheet
1.DSPIC30F3010-30ISO.pdf
(244 pages)
Specifications of DSPIC30F3010-30I/SO
A/d Inputs
6-Channels, 10-Bit
Cpu Speed
30 MIPS
Eeprom Memory
1K Bytes
Input Output
20
Interface
I2C/SPI/UART, USART
Ios
20
Memory Type
Flash
Number Of Bits
16
Package Type
28-pin SOIC
Programmable Memory
24K Bytes
Ram Size
1K Bytes
Timers
5-16-bit, 2-32-bit
Voltage, Range
2.5-5.5
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
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Quantity
Price
Part Number:
DSPIC30F3010-30I/SO
Manufacturer:
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dsPIC30F
20.4
The conversion trigger will terminate acquisition and
start the requested conversions.
The SSRC<2:0> bits select the source of the
conversion trigger.
The SSRC bits provide for up to 5 alternate sources of
conversion trigger.
When SSRC<2:0> = 000, the conversion trigger is
under software control. Clearing the SAMP bit will
cause the conversion trigger.
When SSRC<2:0> = 111 (Auto Start mode), the con-
version trigger is under A/D clock control. The SAMC
bits select the number of A/D clocks between the start
of acquisition and the start of conversion. This provides
the fastest conversion rates on multiple channels.
SAMC must always be at least 1 clock cycle.
Other trigger sources can come from timer modules,
Motor Control PWM module, or external interrupts..
DS70082G-page 146
Note:
Programming the Start of
Conversion Trigger
To operate the A/D at the maximum spec-
ified conversion speed, the Auto Convert
Trigger option should be selected (SSRC
= 111) and the Auto Sample Time bits
shoud be set to 1 T
This configuration will give a total conver-
sion period (sample + convert) of 13 T
The use of any other conversion trigger
will result in additional T
synchronize the external event to the A/D.
AD
(SAMC = 00001).
AD
cycles to
AD
Preliminary
.
20.5
Clearing the ADON bit during a conversion will abort
the current conversion and stop the sampling sequenc-
ing. The ADCBUF will not be updated with the partially
completed A/D conversion sample. That is, the
ADCBUF will continue to contain the value of the last
completed conversion (or the last value written to the
ADCBUF register).
If the clearing of the ADON bit coincides with an auto
start, the clearing has a higher priority.
After the A/D conversion is aborted, a 2 T
required before the next sampling may be started by
setting the SAMP bit.
If sequential sampling is specified, the A/D will continue
at the next sample pulse which corresponds with the
next channel converted. If simultaneous sampling is
specified, the A/D will continue with the next
multi-channel group conversion sequence.
20.6
The A/D conversion requires 13 T
A/D conversion clock is software selected using a six
bit counter. There are 64 possible options for T
EQUATION 20-1:
The internal RC oscillator is selected by setting the
ADRC bit.
For correct A/D conversions, the A/D conversion clock
(T
of 154 nsec (for V
AD
) must be selected to ensure a minimum T
Aborting a Conversion
Selecting the A/D Conversion
Clock
T
AD
= T
DD
CY
= 5V).
* (0.5*(ADCS<5:0> +1))
A/D CONVERSION CLOCK
2004 Microchip Technology Inc.
AD
. The source of the
AD
AD
AD
wait is
.
time
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