DSPIC30F6014A-30I/PF Microchip Technology Inc., DSPIC30F6014A-30I/PF Datasheet - Page 149

• Manufacturer Part Number: DSPIC30F6014A-30I/PF
• Description: 16 BIT MCU/DSP 80LD 30MIPS 144 KB FLASH
• Manufacturer: Microchip Technology Inc.
• Type: DSPr

Specifications of DSPIC30F6014A-30I/PF

• A/d Inputs: 16-Channels, 12-Bit
• Cpu Speed: 30 MIPS
• Eeprom Memory: 4K Bytes
• Input Output: 68
• Interface: CAN/I2C/SPI/UART
• Ios: 68
• Memory Type: Flash
• Number Of Bits: 16
• Package Type: 80-pin TQFP
• Programmable Memory: 144K Bytes
• Ram Size: 8K Bytes
• Timers: 5-16-bit, 2-32-bit
• Voltage, Range: 2.5-5.5
• Lead Free Status / Rohs Status: RoHS Compliant part

20.2.2
In order to ensure that a crystal oscillator (or ceramic
resonator) has started and stabilized, an Oscillator
Start-up Timer is included. It is a simple 10-bit counter
that counts 1024 T
oscillator clock to the rest of the system. The time-out
period is designated as T
every time the oscillator has to restart (i.e., on POR,
BOR and wake-up from Sleep). The Oscillator Start-up
Timer is applied to the LP, XT, XTL and HS Oscillator
modes (upon wake-up from Sleep, POR and BOR) for
the primary oscillator.
20.2.3
Enabling the LP oscillator is controlled with two
elements:
1.
2.
The LP oscillator is ON (even during Sleep mode) if
LPOSCEN = 1. The LP oscillator is the device clock if:
• COSC<2:0> = 000 (LP selected as main oscillator)
• LPOSCEN = 1
Keeping the LP oscillator ON at all times allows for a
fast switch to the 32 kHz system clock for lower power
operation. Returning to the faster main oscillator will
still require a start-up time.
20.2.4
The PLL multiplies the clock which is generated by the
primary oscillator. The PLL is selectable to have either
gains of x4, x8 and x16. Input and output frequency
ranges are summarized in Table 20-3.
TABLE 20-3:
The PLL features a lock output, which is asserted when
the PLL enters a phase locked state. Should the loop
fall out of lock (e.g., due to noise), the lock signal will be
rescinded. The state of this signal is reflected in the
read-only LOCK bit in the OSCCON register.
© 2005 Microchip Technology Inc.
4 MHz-10 MHz
4 MHz-10 MHz
4 MHz-7.5 MHz
and
The current oscillator group bits COSC<2:0>
The LPOSCEN bit (OSCCON register)
Fin
OSCILLATOR START-UP TIMER
(OST)
LP OSCILLATOR CONTROL
PHASE LOCKED LOOP (PLL)
PLL FREQUENCY RANGE
OSC
Multiplier
dsPIC30F6011A/6012A/6013A/6014A
OST
PLL
cycles before releasing the
x16
x4
x8
. The T
16 MHz-40 MHz
32 MHz-80 MHz
64 MHz-120 MHz
OST
time is involved
Fout
Preliminary
20.2.5
The FRC oscillator is a fast (7.37 MHz ±2% nominal)
internal RC oscillator. This oscillator is intended to pro-
vide reasonable device operating speeds without the
use of an external crystal, ceramic resonator or RC net-
work. The FRC oscillator can be used with the PLL to
obtain higher clock frequencies.
The dsPIC30F operates from the FRC oscillator when-
ever the current oscillator selection control bits in the
OSCCON register (OSCCON<14:12>) are set to ‘001’.
The
(OSCTUN<3:0>) allows the user to tune the internal
fast RC oscillator (nominal 7.37 MHz). The user can
tune the FRC oscillator within a range of ±6% in steps
of 0.75% around the factory-calibrated setting (see
Table 20-4).
If OSCCON<14:12> are set to ‘111’ and FPR<4:0> are
set to ‘00101’, ‘00110’ or ‘00111’, then a PLL
multiplier of 4, 8 or 16 (respectively) is applied.
TABLE 20-4:
Note:
TUN<3:0>
0111
0110
0101
0100
0011
0010
0001
0000
1111
1110
1101
1100
1011
1010
1001
1000
Bits
six
FAST RC OSCILLATOR (FRC)
When a 16x PLL is used, the FRC oscilla-
tor must not be tuned to a frequency
greater than 7.5 MHz.
bit
Center Frequency (oscillator is
running at calibrated frequency)
FRC TUNING
field
specified
FRC Frequency
+5.25%
+4.50%
+3.75%
+3.00%
+2.25%
+1.50%
+0.75%
-0.75%
-1.50%
-2.25%
-3.00%
-3.75%
-4.50%
-5.25%
-6.00%
DS70143B-page 147
by
TUN<3:0>