
PIC18F6520/8520/6620/8620/6720/8720
DS39609B-page 8
2004 Microchip Technology Inc.
1.2
Details on Individual Family
Members
The PIC18FXX20 devices are available in 64-pin and
80-pin packages. They are differentiated from each
other in five ways:
1.
Flash
program
memory
(32 Kbytes
for
PIC18FX520
devices,
64 Kbytes
for
PIC18FX620
devices
and
128 Kbytes
for
PIC18FX720 devices)
2.
Data
RAM
(2048
bytes
for
PIC18FX520
devices, 3840 bytes for PIC18FX620 and
PIC18FX720 devices)
3.
A/D channels (12 for PIC18F6X20 devices,
16 for PIC18F8X20)
4.
I/O pins (52 on PIC18F6X20 devices, 68 on
PIC18F8X20)
5.
External program memory interface (present
only on PIC18F8X20 devices)
All other features for devices in the PIC18FXX20 family
Block diagrams of the PIC18F6X20 and PIC18F8X20
respectively. The pinouts for these device families are
TABLE 1-1:
PIC18FXX20 DEVICE FEATURES
Features
PIC18F6520
PIC18F6620
PIC18F6720
PIC18F8520
PIC18F8620
PIC18F8720
Operating Frequency
DC – 40 MHz
DC – 25 MHz
DC – 40 MHz
DC – 25 MHz
Program Memory
(Bytes)
32K
64K
128K
32K
64K
128K
Program Memory
(Instructions)
16384
32768
65536
16384
32768
65536
Data Memory
(Bytes)
2048
3840
2048
3840
Data EEPROM
Memory (Bytes)
1024
External Memory
Interface
No
Yes
Interrupt Sources
17
18
I/O Ports
Ports A, B, C,
D, E, F, G
Ports A, B, C, D,
E, F, G
Ports A, B, C, D,
E, F, G
Ports A, B, C,
D, E, F, G, H, J
Ports A, B, C,
D, E, F, G, H, J
Ports A, B, C,
D, E, F, G, H, J
Timers
5
Capture/Compare/
PWM Modules
55
5
Serial Communications
MSSP,
Addressable
USART (2)
MSSP,
Addressable
USART (2)
MSSP,
Addressable
USART (2)
MSSP,
Addressable
USART (2)
MSSP,
Addressable
USART (2)
MSSP,
Addressable
USART (2)
Parallel Communications
PSP
10-bit Analog-to-Digital
Module
12 input
channels
12 input
channels
12 input
channels
16 input
channels
16 input
channels
16 input
channels
Resets (and Delays)
POR, BOR,
RESET
Instruction,
Stack Full,
Stack Underflow
(PWRT, OST)
POR, BOR,
RESET
Instruction,
Stack Full,
Stack Underflow
(PWRT, OST)
POR, BOR,
RESET
Instruction,
Stack Full,
Stack Underflow
(PWRT, OST)
POR, BOR,
RESET
Instruction,
Stack Full,
Stack Underflow
(PWRT, OST)
POR, BOR,
RESET
Instruction,
Stack Full,
Stack Underflow
(PWRT, OST)
POR, BOR,
RESET
Instruction,
Stack Full,
Stack Underflow
(PWRT, OST)
Programmable
Low-Voltage Detect
Yes
Programmable
Brown-out Reset
Yes
Instruction Set
77 Instructions
Package
64-pin TQFP
80-pin TQFP