DSPIC30F3014-20I/PT Microchip Technology, DSPIC30F3014-20I/PT Datasheet - Page 51
![IC, DSC, 16BIT, 24KB 40MHZ, 5.5V, TQFP44](/photos/6/82/68251/c04-076_pt_sml.jpg)
DSPIC30F3014-20I/PT
Manufacturer Part Number
DSPIC30F3014-20I/PT
Description
IC, DSC, 16BIT, 24KB 40MHZ, 5.5V, TQFP44
Manufacturer
Microchip Technology
Series
DsPIC30Fr
Datasheets
1.DSPIC30F3014-30IPT.pdf
(228 pages)
2.DSPIC30F3014-30IPT.pdf
(16 pages)
3.DSPIC30F3014-30IPT.pdf
(6 pages)
4.DSPIC30F3014-30IPT.pdf
(14 pages)
5.DSPIC30F3014-30IPT.pdf
(20 pages)
6.DSPIC30F3014-20IP.pdf
(226 pages)
Specifications of DSPIC30F3014-20I/PT
Core Frequency
40MHz
Core Supply Voltage
5.5V
Embedded Interface Type
I2C, SPI, UART
No. Of I/o's
30
Flash Memory Size
24KB
Supply Voltage Range
2.5V To 5.5V
Core Processor
dsPIC
Core Size
16-Bit
Speed
20 MIPS
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
30
Program Memory Size
24KB (8K x 24)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 13x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°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
30
Interface Type
I2C/SPI/UART
On-chip Adc
13-chx12-bit
Number Of Timers
3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT80PT3 - SOCKET TRAN ICE 80MQFP/TQFPAC30F006 - MODULE SKT FOR DSPIC30F 44TQFPAC164305 - MODULE SKT FOR PM3 44TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
DSPIC30F301420IPT
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DSPIC30F3014-20I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
DSPIC30F3014-20I/PT
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
6.3
To write an EEPROM data location, the following
sequence must be followed:
1.
2.
3.
EXAMPLE 6-4:
2010 Microchip Technology Inc.
; Point to data memory
; The NVMADR captures last table access address
; Select data EEPROM for 1 word op
; Operate key to allow write operation
; Write cycle will complete in 2mS. CPU is not stalled for the Data Write Cycle
; User can poll WR bit, use NVMIF or Timer IRQ to determine write complete
Erase the data EEPROM word.
a)
b)
c)
d)
e)
f)
g)
h)
Write the data word into data the EEPROM write
latches.
Program 1 data word into the data EEPROM.
a)
b)
c)
d)
e)
f)
g)
MOV
MOV
MOV
MOV
TBLWTL
MOV
MOV
DISI
MOV
MOV
MOV
MOV
BSET
NOP
NOP
Writing to the Data EEPROM
Select the word, data EEPROM erase and
set the WREN bit in the NVMCON register.
Write the address of word to be erased into
NVMADR.
Enable the NVM interrupt (optional).
Write 0x55 to NVMKEY.
Write 0xAA to NVMKEY.
Set the WR bit. This begins the erase cycle.
Either poll the NVMIF bit or wait for the
NVMIF interrupt.
The WR bit is cleared when the erase cycle
ends.
Select the word, data EEPROM program and
set the WREN bit in the NVMCON register.
Enable the NVM write done interrupt
(optional).
Write 0x55 to NVMKEY.
Write 0xAA to NVMKEY.
Set the WR bit. This begins the program
cycle.
Either poll the NVMIF bit or wait for the
NVM interrupt.
The WR bit is cleared when the write cycle
ends.
#LOW_ADDR_WORD,W0
#HIGH_ADDR_WORD,W1
W1
#LOW(WORD),W2
W2
#0x4004,W0
W0
#5
#0x55,W0
W0
#0xAA,W1
W1
NVMCON,#WR
,
,
,
,
,
DATA EEPROM WORD WRITE
TBLPAG
[ W0]
NVMCON
NVMKEY
NVMKEY
; Init pointer
; Get data
; Write data
; Block all interrupts with priority <7 for
; next 5 instructions
; Write the 0x55 key
; Write the 0xAA key
; Initiate program sequence
The write does not initiate if the above sequence is not
exactly followed (write 0x55 to NVMKEY, write 0xAA to
NVMCON, then set WR bit) for each word. It is strongly
recommended that interrupts be disabled during this
code segment.
Additionally, the WREN bit in NVMCON must be set to
enable writes. This mechanism prevents accidental
writes to data EEPROM due to unexpected code exe-
cution. The WREN bit should be kept clear at all times
except when updating the EEPROM. The WREN bit is
not cleared by hardware.
After a write sequence has been initiated, clearing the
WREN bit does not affect the current write cycle. The
WR bit is inhibited from being set unless the WREN bit
is set. The WREN bit must be set on a previous instruc-
tion. Both WR and WREN cannot be set with the same
instruction.
At the completion of the write cycle, the WR bit is
cleared in hardware and the Nonvolatile Memory Write
Complete Interrupt Flag bit (NVMIF) is set. The user
may either enable this interrupt or poll this bit. NVMIF
must be cleared by software.
6.3.1
Once the user has erased the word to be programmed,
then a table write instruction is used to write one write
latch, as shown in
6.3.2
To write a block of data EEPROM, write to all sixteen
latches first, then set the NVMCON register and
program the block, as shown in
dsPIC30F3014/4013
WRITING A WORD OF DATA
EEPROM
WRITING A BLOCK OF DATA
EEPROM
Example
6-4.
Example
DS70138G-page 51
6-5.