PIC18F87J50T-I/PT Microchip Technology, PIC18F87J50T-I/PT Datasheet - Page 16

• Manufacturer Part Number: PIC18F87J50T-I/PT
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,64PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F87J50T-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 65
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Ram Size: 3.8K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TFQFP
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3904 B
• Interface Type: I2C, MSSP, SPI, EUSART
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 65
• Number Of Timers: 5
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, DM183032, DM183022, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 12 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC162087 - HEADER MPLAB ICD2 18F87J50 68/84MA180021 - MODULE PLUG-IN 18F87J50 FS USBAC164328 - MODULE SKT FOR 80TQFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: PIC18F87J50T-I/PTTR

FIGURE 3-1:
3.3
DS51678A-page 12
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CRYSTAL
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KEY COMPONENT LOCATIONS
In order to use the USB module on the PIC18F87J50 family of microcontrollers, the
module requires a fixed 48 MHz or 6 MHz clock for use in Full-Speed or Low-Speed
modes, respectively. These clock frequencies can be derived from the internal 96 MHz
PLL, and the microcontroller core need not run at the same frequency as the USB
module. In order to use the 96 MHz PLL, a clock source which is an integer multiple of
4 MHz is required. A 12 MHz crystal is included on the board for this purpose.
On the PIC18F87J50 microcontroller, the oscillator pins (RA6 and RA7) route directly
to the 12 MHz crystal. Unlike most other I/O pins, these do not route directly to the “ICE
Module” female headers. Two resistor pads can be used to connect RA6 and RA7 to
the female header pins, but by default, these are left unpopulated. This is done to
prevent “crystal contention” between the 12 MHz crystal on the PIM and the 10 MHz
crystal on the HPC Explorer board.
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© 2007 Microchip Technology Inc.
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