PIC18F85K22-I/PT Microchip Technology, PIC18F85K22-I/PT Datasheet - Page 88

• Manufacturer Part Number: PIC18F85K22-I/PT
• Description: IC, 8BIT MCU, PIC18F, 64MHZ, TQFP-80
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F85K22-I/PT

• Controller Family/series: PIC18
• No. Of I/o's: 69
• Eeprom Memory Size: 1KB
• Ram Memory Size: 2KB
• Cpu Speed: 64MHz
• No. Of Timers: 8
• Core Size: 8 Bit
• Program Memory Size: 32KB
• Core Processor: PIC
• Speed: 64MHz
• Connectivity: EBI/EMI, I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 24x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F87K22 FAMILY
6.1
PIC18 microcontrollers implement a 21-bit Program
Counter that 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 entire PIC18F87K22 family offers a range of
on-chip Flash program memory sizes, from 32 Kbytes
(up to 16,384 single-word instructions) to 128 Kbytes
(65,536 single-word instructions).
• PIC18F65K22 and PIC18F85K22 – 32 Kbytes of
• PIC18F66K22 and PIC18F86K22 – 64 Kbytes of
• PIC18F67K22 and PIC18F87K22 – 128 Kbytes of
The program memory maps for individual family
members are shown in
6.1.1
All PIC18 devices have a total of three hard-coded
return vectors in their program memory space. The
Reset vector address is the default value to which the
Program Counter returns on all device Resets; it is
located at 0000h.
PIC18 devices also have two interrupt vector
addresses for handling high-priority and low-priority
interrupts. The high-priority interrupt vector is located at
0008h and the low-priority interrupt vector is at 0018h.
The locations of these vectors are shown, in relation to
the program memory map, in
DS39960D-page 88
Flash memory, storing up to 16,384 single-word
instructions
Flash memory, storing up to 32,768 single-word
instructions
Flash memory, storing up to 65,536 single-word
instructions
Program Memory Organization
HARD MEMORY VECTORS
Figure
Figure
6-1.
6-2.
FIGURE 6-2:
Legend:
High-Priority Interrupt Vector
Low-Priority Interrupt Vector
Program Memory
Reset Vector
(Top of Memory) represents upper boundary
of on-chip program memory space (see
Figure 6-1
Shaded area represents unimplemented
memory. Areas are not shown to scale.
On-Chip
Read ‘0’
 2009-2011 Microchip Technology Inc.
HARD VECTOR FOR
PIC18F87K22 FAMILY
DEVICES
for device-specific values).
0000h
0008h
0018h
1FFFFFh