PIC18F87K90T-I/PT Microchip Technology, PIC18F87K90T-I/PT Datasheet - Page 166

• Manufacturer Part Number: PIC18F87K90T-I/PT
• Description: 128kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm T/
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F87K90T-I/PT

• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 4 KB
• Interface Type: I2C, SPI
• Maximum Clock Frequency: 64 MHz
• Number Of Timers: 11
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 24 Channel
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 64MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 69
• Eeprom Size: 1K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 24x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP
• Lead Free Status / Rohs Status: Details

corresponding Data Direction and Output Latch registers
PIC18F87K90 FAMILY
11.5
PORTD is an 8-bit wide, bidirectional port. The
are TRISD and LATD.
All pins on PORTD are implemented with Schmitt
Trigger input buffers. Each pin is individually
configurable as an input or output.
Each of the PORTD pins has a weak internal pull-up. A
single control bit can turn off all the pull-ups. This is
performed by clearing bit, RDPU (PADCFG1<7>). The
weak pull-up is automatically turned off when the port
pin is configured as an output. The pull-ups are
disabled on all device Resets.
All of the PORTD pins are multiplexed with LCD
segment drives that are controlled by bits in the
LCDSE0 register. RD0 is multiplexed with the CTMU
pulse generator output.
DS39957D-page 166
Note:
PORTD, TRISD and
LATD Registers
These pins are configured as digital inputs
on any device Reset.
RD0 has a CTMU functionality. RD1 has the functionality
I/O port functionality is only available when the LCD
segments are disabled.
The PORTD also has the I
RD4, RD5 and RD6. The pins for SPI are also configu-
rable for open-drain output. Open-drain configuration is
selected by setting the SSPxOD control bits in the
ODCON1 register.
for a Timer5 clock input and also Timer7 has functionality
for an external clock gate input.
EXAMPLE 11-4:
CLRF
CLRF
MOVLW
MOVWF
PORTD
LATD
0CFh
TRISD
 2009-2011 Microchip Technology Inc.
; Initialize PORTD by
; clearing output
; data latches
; Alternate method
; to clear output
; data latches
; Value used to
; initialize data
; direction
; Set RD<3:0> as inputs
; RD<5:4> as outputs
; RD<7:6> as inputs
INITIALIZING PORTD
2
C and SPI functionality on