DSPIC30F4012-20I/SO Microchip Technology, DSPIC30F4012-20I/SO Datasheet - Page 17

• Manufacturer Part Number: DSPIC30F4012-20I/SO
• Description: IC, DSC, 16BIT, 48KB 20MHZ, 5.5V, SOIC28
• Manufacturer: Microchip Technology
• Series: DsPIC30Fr

Specifications of DSPIC30F4012-20I/SO

• Core Frequency: 20MHz
• Embedded Interface Type: CAN, I2C, SPI, UART
• No. Of I/o's: 20
• Flash Memory Size: 48KB
• Supply Voltage Range: 2.5V To 5.5V
• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, Motor Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 20
• Program Memory Size: 48KB (16K 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 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Package: 28SOIC W
• Device Core: dsPIC
• Family Name: dsPIC30
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 20
• Interface Type: CAN/I2C/SPI/UART
• On-chip Adc: 6-chx10-bit
• Number Of Timers: 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MIL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: DSPIC30F401220ISO

26. Module: Data EEPROM
FIGURE 1:
© 2010 Microchip Technology Inc.
The Most Significant bit of every fourth byte in data
EEPROM may be corrupted on any write opera-
tion. This write corruption may occur while using
either PRO MATE
Self-Programming (RTSP).
Figure 1 shows the first twelve bytes in data
EEPROM and indicates the affected bits.
Work arounds
Work around 1:
Use program Flash memory instead of data
EEPROM to store constant data.
Work around 2:
Use less than 16 bits in each word in the available
word of data EEPROM, excluding the Most
Significant bit.
(Odd Address)
Note 1: The shaded bits labelled “B” represent the bits that may be corrupted on a write operation.
0x7FFC01
0x7FFC03
0x7FFC05
0x7FFC07
0x7FFC09
0x7FFC0B
High Byte
2: The memory map shown here depicts only the first twelve bytes of device EEPROM.
dsPIC30F4011/4012 DATA EEPROM
®
, MPLAB ICD 2 or Run-Time
B
B
B
15 14 13 12 11 10
9
8
7
6
EXAMPLE 11:
.include
.section
.align 4
.hword 0xF345
.byte
.byte
.hword 0x1234
.byte
.byte
5
Work around 3:
Avoid using every fourth byte. Example 11 shows
how the ASM30 assembler can be used to allocate
data in the EEPROM under this constraint.
Affected Silicon Revisions
4
A1
X
3
0x23
0xFF
0x23
0xFF
A2
dsPIC30F4011/4012
2
"p30f4012.inc"
.eedata, "r"
1
A3
0
A4
(Even Address)
;Unused byte
;Unused byte
0x7FFC00
0x7FFC02
0x7FFC04
0x7FFC06
0x7FFC08
0x7FFC0A
Low Byte
DS80454D-page 17