DSPIC30F2023-20E/PT Microchip Technology, DSPIC30F2023-20E/PT Datasheet - Page 39

• Manufacturer Part Number: DSPIC30F2023-20E/PT
• Description: 12KB, Flash, 512bytes-RAM, 30MIPS, 35I/O, 16-bit Family,nanoWatt 44 TQFP 10x10x1
• Manufacturer: Microchip Technology
• Series: dsPIC™ 30Fr

Specifications of DSPIC30F2023-20E/PT

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 12KB (4K x 24)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-TQFP, 44-VQFP
• Package: 44TQFP
• Device Core: dsPIC
• Family Name: dsPIC30
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 35
• Interface Type: I2C/SPI/UART
• On-chip Adc: 12-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DV164005 - KIT ICD2 SIMPLE SUIT W/USB CABLE
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

11.10 Reading Configuration Memory
The procedure for reading configuration memory is
similar to the procedure for reading code memory,
except that 16-bit data words are read instead of 24-bit
words. Since there are seven Configuration registers,
they are read one register at a time.
TABLE 11-10:
© 2010 Microchip Technology Inc.
Step 1: Exit the Reset vector.
0000
0000
0000
Step 2: Initialize TBLPAG, and the read pointer (W6) and the write pointer (W7) for TBLRD instruction.
0000
0000
0000
0000
Step 3: Read the Configuration register and write it to the VISI register (located at 0x784).
0000
0000
0000
0000
0000
Step 4: Output the VISI register using the REGOUT command.
0001
0000
Step 5: Reset device internal PC.
0000
0000
Step 6: Repeat steps 3-5 until all desired code memory is read.
Command
(Binary)
040100
040100
000000
200F80
880190
EB0300
EB0380
BA0BB6
000000
000000
883C20
000000
<VISI>
000000
040100
000000
SERIAL INSTRUCTION EXECUTION FOR READING ALL CONFIGURATION MEMORY
(Hex)
Data
GOTO 0x100
GOTO 0x100
NOP
MOV
MOV
CLR
CLR
TBLRDL [W6++], [W7]
NOP
NOP
MOV
NOP
Clock out contents of VISI register
NOP
GOTO 0x100
NOP
#0xF8, W0
W0, TBLPAG
W6
W7
W0, VISI
Table 11-10
reading all of the configuration memory. Note that the
TBLPAG register is hard-coded to 0xF8 (the upper byte
address of configuration memory), and the read pointer
W6 is initialized to 0x0000.
Description
shows the ICSP programming details for
DS70284C-page 39