Code Conversion
PIC16C72 to PIC16F72
Scott Kim, Principle FAE
© 2005 Microchip Technology Incorporated
Confidential
Spec. comparison
PIC16C72 vs PIC16F72
Program
Memory
Device
Flash OTP
PIC16C72
PIC16F72
O
O
Timer Function
Prog. RAM
(Word) (byte)
EE
(byte)
AD input 16-bit
8-bit
WDG
Serial
PWM I/Os Port Special Features
2K
128
-
5x8bit
1
2
1
1
22 IIC/SPI
2K
128
-
5x8bit
1
2
1
1
22 IIC/SPI
© 2005 Microchip Technology Incorporated
Confidential
ICD2 support
PIC16F72 Benefit

Higher Performance, Lower Price


Re-programmable FLASH technology
Support MPLAB-ICD2 debugging
Low cost development environment
 Easy to use, Easy to debug, Easy to design

© 2005 Microchip Technology Incorporated
Confidential
Pin diagrams
PIC16C72 vs PIC16F72

PIC16C72

PIC16F72
Same Pin diagrams  No Hardware modify
© 2005 Microchip Technology Incorporated
Confidential
Program memory map
PIC16C72 vs PIC16F72

PIC16C72

PIC16F72
Same Reset Vector / Interrupt vector
Same program memory
© 2005 Microchip Technology Incorporated
Confidential
Register file map
PIC16C72 vs PIC16F72

PIC16C72

Different only
PM registers
 No Software
modify
© 2005 Microchip Technology Incorporated
Confidential
PIC16F72
Configuration bits
PIC16C72 vs PIC16F72

PIC16C72

PIC16F72
Different configuration bits
 Need programming option verify
© 2005 Microchip Technology Incorporated
Confidential
Interrupt
PIC16C72 vs PIC16F72

PIC16C72

PIC16F72
Same Interrupt Logic  No software modify
© 2005 Microchip Technology Incorporated
Confidential
Wake-up from SLEEP
PIC16C72 vs PIC16F72

PIC16C72

PIC16F72
Same power-down mode No Software modify
© 2005 Microchip Technology Incorporated
Confidential
Instruction Sets
PIC16C72 vs PIC16F72

PIC16C72

PIC16F72
Same Instruction set No Software modify
© 2005 Microchip Technology Incorporated
Confidential
Electrical characteristics
PIC16C72 vs PIC16F72

PIC16C72

PIC16F72
Different electrical characteristics Need Hardware Verify
© 2005 Microchip Technology Incorporated
Confidential
DC / AC characteristics
PIC16C72 vs PIC16F72

PIC16C72
Refer to Datasheet

PIC16F72
Refer to Datasheet
Different DC / AC characteristics Need Hardware Verify
© 2005 Microchip Technology Incorporated
Confidential
Conversion summary
PIC16C72 to PIC16F72
Section
Hardware
Software

Check point
Pin diagrams
Electrical characteristics
DC / AC characteristics
Reset Vector
Interrupt vector
Program memory
Register file map
configuration bits
Interrupt Logic
power-down mode
Comparison
Same
Different
Different
Same
Same
Same
Different
Different
Same
Same
Modify
X
O
O
X
X
X
X
O
X
X
Please contact Microchip FAEs for details
© 2005 Microchip Technology Incorporated
Confidential
Remark
Absolute maximum rating
Hardware verify
Different only PM Register
programming option verify