DSPIC30F2012-30I/SP Microchip Technology Inc., DSPIC30F2012-30I/SP Datasheet - Page 22
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DSPIC30F2012-30I/SP
Manufacturer Part Number
DSPIC30F2012-30I/SP
Description
DSP, 16-Bit, 12 KB Flash, 1KB RAM, 20 I/O, PDIP-28
Manufacturer
Microchip Technology Inc.
Type
DSPr
Datasheet
1.DSPIC30F2012-30ISP.pdf
(205 pages)
Specifications of DSPIC30F2012-30I/SP
A/d Inputs
10-Channels, 12-Bit
Cpu Speed
30 MIPS
Eeprom Memory
0 Bytes
Input Output
20
Interface
I2C, SPI, UART/USART
Ios
20
Memory Type
Flash
Number Of Bits
16
Package Type
28-pin SPDIP
Programmable Memory
12K Bytes
Ram Size
1K Bytes
Timers
3-16-bit, 1-32-bit
Voltage, Range
2.5-5.5
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DSPIC30F2012-30I/SP
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
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ds
2.3
The dsPIC DSC devices feature a 16/16-bit signed
fractional divide operation, as well as 32/16-bit and 16/
16-bit signed and unsigned integer divide operations, in
the form of single instruction iterative divides. The fol-
lowing instructions and data sizes are supported:
1.
2.
3.
4.
5.
The 16/16 divides are similar to the 32/16 (same number
of iterations), but the dividend is either zero-extended or
sign-extended during the first iteration.
TABLE 2-1:
DS70139E-page 20
DIVF
DIV.sd
DIV.s
DIV.ud
DIV.u
DIVF - 16/16 signed fractional divide
DIV.sd - 32/16 signed divide
DIV.ud - 32/16 unsigned divide
DIV.s - 16/16 signed divide
DIV.u - 16/16 unsigned divide
Instruction
PIC30F2011/2012/3012/3013
Divide Support
DIVIDE INSTRUCTIONS
Signed fractional divide: Wm/Wn
Signed divide: (Wm+1:Wm)/Wn
Signed divide: Wm/Wn
Unsigned divide: (Wm+1:Wm)/Wn
Unsigned divide: Wm/Wn
W0; Rem
W0; Rem
W0; Rem
W0; Rem
W0; Rem
W1
W1
The divide instructions must be executed within a
REPEAT loop. Any other form of execution (e.g., a
series of discrete divide instructions) will not function
correctly because the instruction flow depends on
RCOUNT. The divide instruction does not automatically
set up the RCOUNT value and it must, therefore, be
explicitly and correctly specified in the REPEAT instruc-
tion, as shown in Table 2-1 (REPEAT executes the tar-
get instruction {operand value+1} times). The REPEAT
loop count must be setup for 18 iterations of the DIV/
DIVF instruction. Thus, a complete divide operation
requires 19 cycles.
Function
Note:
W1
W1
W1
The divide flow is interruptible. However,
the user needs to save the context as
appropriate.
© 2006 Microchip Technology Inc.
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