PIC18F2685-I/SO Microchip Technology, PIC18F2685-I/SO Datasheet - Page 63
![IC PIC MCU FLASH 48KX16 28SOIC](/photos/6/59/65909/150-28-soic_sml.jpg)
PIC18F2685-I/SO
Manufacturer Part Number
PIC18F2685-I/SO
Description
IC PIC MCU FLASH 48KX16 28SOIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PCM18XT0.pdf
(484 pages)
2.PIC18F2221-ISO.pdf
(46 pages)
3.PIC18F2682-ISP.pdf
(6 pages)
4.PIC18F2682-ISP.pdf
(4 pages)
Specifications of PIC18F2685-I/SO
Program Memory Type
FLASH
Program Memory Size
96KB (48K x 16)
Package / Case
28-SOIC (7.5mm Width)
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
25
Eeprom Size
1K x 8
Ram Size
3.25K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3.25 KB
Interface Type
EUSART/I2C/MSSP/SPI
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
28
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
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
- PCM18XT0 PDF datasheet
- PIC18F2221-ISO PDF datasheet #2
- PIC18F2682-ISP PDF datasheet #3
- PIC18F2682-ISP PDF datasheet #4
- Current page: 63 of 484
- Download datasheet (9Mb)
5.0
There are three types of memory in PIC18 Enhanced
microcontroller devices:
• Program Memory
• Data RAM
• Data EEPROM
As Harvard architecture devices, the data and program
memories use separate busses; this allows for
concurrent access of the two memory spaces. The data
EEPROM, for practical purposes, can be regarded as
a peripheral device, since it is addressed and accessed
through a set of control registers.
Additional detailed information on the operation of the
Flash program memory is provided in Section 6.0
“Flash Program Memory”. Data EEPROM is
discussed separately in Section 7.0 “Data EEPROM
Memory”.
FIGURE 5-1:
© 2009 Microchip Technology Inc.
CALL, RCALL, RETURN
RETFIE, RETLW
MEMORY ORGANIZATION
High Priority Interrupt Vector 00008h
Low Priority Interrupt Vector
PIC18F2682/4682
Program Memory
Stack Level 31
Stack Level 1
Reset Vector
PC<20:0>
Read ‘0’
On-Chip
PROGRAM MEMORY MAP AND STACK FOR PIC18F2682/2685/4682/4685 DEVICES
•
•
•
21
0000h
0018h
13FFFh
14000h
1FFFFFh
200000h
PIC18F2682/2685/4682/4685
CALL, RCALL, RETURN
RETFIE, RETLW
5.1
PIC18 microcontrollers implement a 21-bit program
counter, which is capable of addressing a 2-Mbyte
program memory space. Accessing a location between
the upper boundary of the physically implemented
memory and the 2-Mbyte address will return all ‘0’s (a
NOP instruction).
The PIC18F2682 and PIC18F4682 each have 80 Kbytes
of Flash memory and can store up to 40,960 single-word
instructions. The PIC18F2685 and PIC18F4685 each
have 96 Kbytes of Flash memory and can store up to
49,152 single-word instructions.
PIC18 devices have two interrupt vectors. The Reset
vector address is at 0000h and the interrupt vector
addresses are at 0008h and 0018h.
The program memory maps for PIC18F2682/4682 and
PIC18F2685/4685 devices are shown in Figure 5-1.
High Priority Interrupt Vector 0008h
Low Priority Interrupt Vector
Program Memory Organization
PIC18F2685/4685
Program Memory
Stack Level 31
Stack Level 1
Reset Vector
PC<20:0>
On-Chip
Read ‘0’
•
•
•
21
0000h
0018h
17FFFh
18000h
1FFFFFh
200000h
DS39761C-page 63
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