
PIC16F946
DS41265A-page 260
Preliminary
2005 Microchip Technology Inc.
APPENDIX C:
CONVERSION
CONSIDERATIONS
Considerations for converting from previous versions
of devices to the ones listed in this data sheet are listed
TABLE C-1:
CONVERSION CONSIDERATIONS
Characteristic
PIC16F946
PIC16F926
PIC18F6490
Pins
64
Timers
3
4
Interrupts
20
9
22
Communication
USART, SSP
(SPI, I2C Slave)
SSP
(SPI, I2C Master/Slave)
USART, SSP
(SPI, I2C Master/Slave)
Frequency
20 MHz
Voltage
2.0V-5.5V
2.5V-5.5V
2.0V-5.5V
A/D
10-bit,
7 conversion clock selects
10-bit,
4 conversion clock selects
10-bit,
8 conversion clock selects
CCP
2
1
2
Comparator
2
—
2
Comparator Voltage
Reference
Yes
—
Yes
Program Memory
8K Flash
8K OTP
8K Flash
RAM
332 bytes
336 bytes
768 bytes
EEPROM Data
256 bytes
—
Code Protection
On/Off
Segmented, starting at end
of program memory
On/Off
Program Memory
Write Protection
——
—
LCD Module
42 segment drivers,
4 commons
32 segment drivers,
4 commons
32 segment drivers,
4 commons
Other
In-Circuit Debugger
—
In-Circuit Debugger