PIC18F4550-I/PT Microchip Technology Inc., PIC18F4550-I/PT Datasheet - Page 191

• Manufacturer Part Number: PIC18F4550-I/PT
• Description: 44 PIN, 32 KB FLASH, 2048 RAM, FS-USB 2.0
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F4550-I/PT

• A/d Inputs: 13-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 12 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 34
• Interface: I2C/SPI/UART/USART/USB
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 44-pin TQFP
• Programmable Memory: 32K Bytes
• Ram Size: 2K Bytes
• Speed: 48 MHz
• Timers: 1-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FIGURE 18-2:
FIGURE 18-3:
FIGURE 18-4:
© 2006 Microchip Technology Inc.
USB Clock
SPP<7:0>
USB Clock
SPP<7:0>
SPP<7:0>
CK1SPP
CK2SPP
CK1SPP
CK2SPP
CK1SPP
CK2SPP
OESPP
CSSPP
OESPP
CSSPP
F
OESPP
CSSPP
OSC
/4
MOVWF SPPEPS
Write Address
TIMING FOR MICROCONTROLLER WRITE ADDRESS, WRITE DATA AND
READ DATA (NO WAIT STATES)
TIMING FOR USB WRITE ADDRESS AND DATA (4 WAIT STATES)
TIMING FOR USB WRITE ADDRESS AND READ DATA (4 WAIT STATES)
2 Wait States
2 Wait States
Write Address
Write Address
ADDR
2 Wait States
2 Wait States
PIC18F2455/2550/4455/4550
MOVWF SPPDATA
Write Data
Preliminary
DATA
2 Wait States
2 Wait States
Read Data
Write Data
MOVF SPPDATA, W
Read Data
2 Wait States
2 Wait States
DATA
DS39632C-page 189