DSPIC30F4012 Microchip Technology Inc., DSPIC30F4012 Datasheet - Page 47

• Manufacturer Part Number: DSPIC30F4012
• Description: Dspic30f4011/4012 Enhanced Flash 16-bit Digital Signal Controller
• Manufacturer: Microchip Technology Inc.

6.0
The dsPIC30F family of devices contains internal
program Flash memory for executing user code. There
are two methods by which the user can program this
memory:
1.
2.
6.1
dsPIC30F devices can be serially programmed while in
the end application circuit. This is simply done with two
lines for Programming Clock and Programming Data
(which are named PGC and PGD, respectively), and
three other lines for Power (V
Master Clear (MCLR). This allows customers to manu-
facture boards with unprogrammed devices, and then
program the digital signal controller just before shipping
the product. This also allows the most recent firmware
or a custom firmware to be programmed.
FIGURE 6-1:
© 2007 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). For more information on the device
instruction set and programming, refer to the “dsPIC30F/
33F Programmer’s Reference Manual” (DS70157).
In-Circuit Serial Programming™ (ICSP™)
Run-Time Self-Programming (RTSP)
FLASH PROGRAM MEMORY
In-Circuit Serial Programming
(ICSP)
User/Configuration
Space Select
ADDRESSING FOR TABLE AND NVM REGISTERS
DD
Using
NVMADR
Addressing
Using
Table
Instruction
), Ground (V
Using
Program
Counter
1/0
1/0
0
SS
) and
NVMADRU Reg
TBLPAG Reg
8 bits
8 bits
Program Counter
6.2
RTSP is accomplished using TBLRD (table read) and
TBLWT (table write) instructions.
With RTSP, the user may erase program memory,
32 instructions (96 bytes) at a time, and can write
program memory data, 32 instructions (96 bytes) at a
time.
6.3
The TBLRDL and the TBLWTL instructions are used to
read or write to bits <15:0> of program memory.
TBLRDL and TBLWTL can access program memory in
Word or Byte mode.
The TBLRDH and TBLWTH instructions are used to read
or write to bits<23:16> of program memory. TBLRDH
and TBLWTH can access program memory in Word or
Byte mode.
A 24-bit program memory address is formed using
bits<7:0> of the TBLPAG register and the Effective
Address (EA) from a W register, specified in the table
instruction, as shown in Figure 6-1.
24 bits
24-bit EA
dsPIC30F4011/4012
NVMADR Reg EA
Working Reg EA
Run-Time Self-Programming
(RTSP)
Table Instruction Operation Summary
16 bits
16 bits
0
Byte
Select
DS70135E-page 45