PIC18F85J90-I/PT Microchip Technology, PIC18F85J90-I/PT Datasheet - Page 9

• Manufacturer Part Number: PIC18F85J90-I/PT
• Description: IC PIC MCU FLASH 16KX16 80TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F85J90-I/PT

• Core Size: 8-Bit
• Program Memory Size: 32KB (16K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, LVD, POR, PWM, WDT
• Number Of I /o: 67
• Program Memory Type: FLASH
• Ram Size: 2K 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
• Controller Family/series: PIC18
• No. Of I/o's: 67
• Ram Memory Size: 2KB
• Cpu Speed: 40MHz
• No. Of Timers: 4
• No. Of Pwm Channels: 2
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: AUSART, EUSART, I2C, SPI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 67
• Number Of Timers: 4
• 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, DV164136, DM163030
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 12 Channel
• Package: 80TQFP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 2.5|3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC162079 - HEADER MPLAB ICD2 18F85J90 64/80AC164328 - MODULE SKT FOR 80TQFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

1.1
© 2009 Microchip Technology Inc.
INTRODUCTION
The MCP3909/PIC18F85J90 Single Phase Energy Meter Reference Design is a fully
functional single phase meter. The design is intended to be low cost and is
transformerless. The design uses a half-wave rectified power supply circuit and a shunt
current sensing element. A single MCP3909 acts as the analog front end measurement
circuitry. The PIC18F85J90 directly drives the LCD glass and displays active energy
consumption.
The meter design contains serially accessible registers and is intended to be flexible
and upgraded to a variety of PIC
firmware presented herein. The “Single Phase Energy Meter Software” offers a
functional and simple means to monitor and control the PIC18F85J90 and can be used
to create custom calibration setups. In some situations, only a single point calibraton
may be required. The energy meter software offers an automated step by step
calibration process that can be used to quickly calibrate energy meters.
FIGURE 1-1:
Design.
Chapter 1. Product Overview
MCP3909/PIC18F85J90 SINGLE PHASE
ENERGY METER REFERENCE DESIGN
MCP3909/PIC18F85J90 Single Phase Energy Meter Reference
®
micro-based energy meter designs using the
DS51884A-page 9