PIC18F87J50T-I/PT Microchip Technology, PIC18F87J50T-I/PT Datasheet - Page 158

• 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

PIC18F87J50 FAMILY
10.8
PORTG is a 5-bit wide, bidirectional port. The corre-
sponding Data Direction register is TRISG. All pins on
PORTG are digital only and tolerate voltages up to
5.5V.
PORTG is multiplexed with EUSART2 functions
(Table 10-16). PORTG pins have Schmitt Trigger input
buffers. PORTG has pins multiplexed with the Parallel
Master Port.
When enabling peripheral functions, care should be
taken in defining TRIS bits for each PORTG pin. Some
peripherals override the TRIS bit to make a pin an
output, while other peripherals override the TRIS bit to
make a pin an input. The user should refer to the
corresponding peripheral section for the correct TRIS
bit settings. The pin override value is not loaded into
the TRIS register. This allows read-modify-write of the
TRIS register without concern due to peripheral
overrides.
DS39775C-page 158
PORTG, TRISG and
LATG Registers
Although the port itself is only five bits wide,
PORTG<7:5> bits are still implemented. These are
used to control the weak pull-ups on the I/O ports
associated with the External Memory Bus (PORTD,
PORTE and PORTJ). Setting these bits enables the
pull-ups. Since these are control bits and are not
associated with port I/O, the corresponding TRISG and
LATG bits are not implemented.
EXAMPLE 10-7:
CLRF
CLRF
MOVLW
MOVWF
PORTG
LATG
04h
TRISG
; Initialize PORTG by
; clearing output
; data latches
; Alternate method to clear
; output data latches
; Value used to initialize
; data direction
; Set RG1:RG0 as outputs
; RG2 as input
; RG4:RG3 as outputs
INITIALIZING PORTG
© 2009 Microchip Technology Inc.