PIC16F684-I/ST Microchip Technology, PIC16F684-I/ST Datasheet - Page 386

• Manufacturer Part Number: PIC16F684-I/ST
• Description: IC PIC MCU FLASH 2KX14 14TSSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F684-I/ST

• Program Memory Type: FLASH
• Program Memory Size: 3.5KB (2K x 14)
• Package / Case: 14-TSSOP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 12
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014, DM164120-4
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT14SS-1 - SOCKET TRANSITION 14DIP/14SSOP
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PICmicro MID-RANGE MCU FAMILY
21.1
DS31021A-page 21-2
Note: On some devices this is a separate pin called AV
Converter
8-bit A/D
Introduction
The analog-to-digital (A/D) converter module has up to eight analog inputs.
The A/D allows conversion of an analog input signal to a corresponding 8-bit digital number. The
output of the sample and hold is the input into the converter, which generates the result via suc-
cessive approximation. The analog reference voltage is software selectable to either the device’s
positive supply voltage (V
unique feature of being able to operate while the device is in SLEEP mode.
The A/D module has three registers. These registers are:
The ADCON0 register, shown in
ADCON1 register, shown in
can be configured as analog inputs (one I/O can also be a voltage reference) or as digital I/O.
The block diagram of the A/D module is shown in
Figure 21-1: 8-bit A/D Block Diagram
• A/D Result Register (ADRES)
• A/D Control Register0 (ADCON0)
• A/D Control Register1 (ADCON1)
(Reference
voltage)
V
REF
(Input voltage)
PCFG2:PCFG0
V
AIN
DD
DD
Figure
) or the voltage level on the V
. This allows the A/D V
V
DD (1)
Figure
001 or
011 or
101
000 or
010 or
100
21-2, configures the functions of the port pins. The I/O pins
21-1, controls the operation of the A/D module. The
CHS2:CHS0
Figure
DD
to be connected to a precise voltage source.
21-1.
111
110
101
100
011
010
001
000
REF
pin. The A/D converter has a
1997 Microchip Technology Inc.
AN1
AN7
AN6
AN5
AN4
AN3/V
AN2
AN0
REF