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PIC16LF818 Datasheet(PDF) 7 Page - Microchip Technology |
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PIC16LF818 Datasheet(HTML) 7 Page - Microchip Technology |
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7 / 176 page  2004 Microchip Technology Inc. DS39598E-page 5 PIC16F818/819 1.0 DEVICE OVERVIEW This document contains device specific information for the operation of the PIC16F818/819 devices. Additional information may be found in the “PICmicro® Mid-Range MCU Family Reference Manual” (DS33023) which may be downloaded from the Microchip web site. The Reference Manual should be considered a complemen- tary document to this data sheet and is highly recommended reading for a better understanding of the device architecture and operation of the peripheral modules. The PIC16F818/819 belongs to the Mid-Range family of the PICmicro® devices. The devices differ from each other in the amount of Flash program memory, data memory and data EEPROM (see Table 1-1). A block diagram of the devices is shown in Figure 1-1. These devices contain features that are new to the PIC16 product line: • Internal RC oscillator with eight selectable frequencies, including 31.25 kHz, 125 kHz, 250 kHz, 500 kHz, 1 MHz, 2 MHz, 4 MHz and 8 MHz. The INTRC can be configured as the system clock via the configuration bits. Refer to Section 4.5 “Internal Oscillator Block” and Section 12.1 “Configuration Bits” for further details. • The Timer1 module current consumption has been greatly reduced from 20 µA (previous PIC16 devices) to 1.8 µA typical (32 kHz at 2V), which is ideal for real-time clock applications. Refer to Section 6.0 “Timer0 Module” for further details. • The amount of oscillator selections has increased. The RC and INTRC modes can be selected with an I/O pin configured as an I/O or a clock output (FOSC/4). An external clock can be configured with an I/O pin. Refer to Section 4.0 “Oscillator Configurations” for further details. TABLE 1-1: AVAILABLE MEMORY IN PIC16F818/819 DEVICES There are 16 I/O pins that are user configurable on a pin-to-pin basis. Some pins are multiplexed with other device functions. These functions include: • External Interrupt • Change on PORTB Interrupt • Timer0 Clock Input • Low-Power Timer1 Clock/Oscillator • Capture/Compare/PWM • 10-bit, 5-channel Analog-to-Digital Converter • SPI/I2C •MCLR (RA5) can be configured as an Input Table 1-2 details the pinout of the devices with descriptions and details for each pin. Device Program Flash Data Memory Data EEPROM PIC16F818 1K x 14 128 x 8 128 x 8 PIC16F819 2K x14 256 x 8 256 x 8 |
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