PIC18F45K20-E/P Microchip Technology, PIC18F45K20-E/P Datasheet - Page 64

• Manufacturer Part Number: PIC18F45K20-E/P
• Description: 32KB, Flash, 1536bytes-RAM, 36I/O, 8-bit Family,nanowatt XLP 40 PDIP .600in TUBE
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F45K20-E/P

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM240313 - BOARD DEMO 8BIT XLPAC164112 - VOLTAGE LIMITER MPLAB ICD2 VPPDM164124 - KIT STARTER FOR PIC18F4XK20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PICkit™ 3 Debug Express
DS41370C-page 60
For more information on the data EEPROM memory see Section 7.0 of the
PIC18F45K20 Data Sheet (DS41303).
FIGURE 3-51:
3.10.3
The Lesson 10 program writes all 256 bytes of the data EEPROM memory, writing each
location with value = 255 – address. For example, the EEPROM byte at address 0x09
is written with value 0xF6 = 246.
Once all locations have been written, the program ends in an infinite while(1) loop.
3.10.4
Build and program the Lesson 10 project, then Run the application in the debugger.
The EEPROM memory may be viewed in the MPLAB IDE by selecting view >
EEPROM.
As the EEPROM memory window does not update with changed EEPROM byte values
during debugging, it is necessary to select Debugger > Read to see the current
contents of the data EEPROM memory. However, doing so will cause a program Reset.
void
{
Note:
//
//
EECON1bits.EEPGD
EECON1bits.CFGS
EEDATA
EEADR
EECON1bits.WREN
INTCONbits.GIE
EECON2
EECON2
EECON1bits.WR
INTCONbits.GIE
while
{
};
EECON1bits.WREN
}
EEPROM_Write(unsigned
location
writes
Exploring the Lesson 10 Source Code
Build and Run the Lesson 10 Code with PICkit 3 Debug Express
The EEPROM window in the MPLAB IDE does not update with new
EEPROM values during debugging.
//
=
(EECON1bits.WR
=
=
=
wait
the
address;
databyte;
0x55;
0xAA;
in
DATA EEPROM WRITE
for
"databyte"
=
"address".
=
=
=
=
=
=
1;
0;
1;
write
0;
1;
0;
0;
==
char
//
//
//
//
//
//
//
//
//
//
to
value
1)
Set
Do
Load
Load
Enable
Disable
Begin
Set
re-enable
Disable
address,
complete.
not
to
to
WR
EEDATA
EEADR
Write
writing
EEPROM
access
access
interrupts
bit
writing
unsigned
interrupts
with
with
sequence
to
at
EEPROM
Config
begin
as
address
byte
char
the
a
© 2009 Microchip Technology Inc.
memory
registers
EEPROM
precaution.
address
to
databyte)
of
be
location
write
written
given
to
write.