PIC18F4550-I/P Microchip Technology Inc., PIC18F4550-I/P Datasheet - Page 397

• Manufacturer Part Number: PIC18F4550-I/P
• Description: 40 PIN, 32 KB FLASH, 2048 RAM, FS-USB 2.0
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F4550-I/P

• 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: 40-pin PDIP
• 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 28-21:
TABLE 28-25: USB LOW-SPEED TIMING REQUIREMENTS
TABLE 28-26: USB FULL-SPEED REQUIREMENTS
© 2006 Microchip Technology Inc.
Param
Param
No.
No.
T
T
T
T
T
T
Symbol
Symbol
LR
LF
LRFM
FR
FF
FRFM
Transition Rise Time
Transition Fall Time
Rise/Fall Time Matching
Transition Rise Time
Transition Fall Time
Rise/Fall Time Matching
USB SIGNAL TIMING
90%
10%
V
CRS
Characteristic
Characteristic
PIC18F2455/2550/4455/4550
USB Data Differential Lines
Preliminary
T
LR
, T
FR
Min
Min
75
75
80
90
4
4
Typ
Typ
—
—
—
—
—
—
111.1
T
Max
Max
300
300
125
20
20
LF
, T
FF
Units
Units
ns
ns
ns
ns
%
%
C
C
C
C
L
L
L
L
DS39632C-page 395
= 200 to 600 pF
= 200 to 600 pF
= 50 pF
= 50 pF
Conditions
Conditions