PIC16F84A-20E/SO Microchip Technology, PIC16F84A-20E/SO Datasheet - Page 368

• Manufacturer Part Number: PIC16F84A-20E/SO
• Description: IC MCU CMOS 20MHZ 1K FLSH 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F84A-20E/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 13
• Program Memory Size: 1.75KB (1K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 68 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 18-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Connectivity: -

PICmicro MID-RANGE MCU FAMILY
19.9
DS31019A-page 19-8
Design Tips
Question 1:
Answer 1:
Any variation of the device V
correctly calculated (specified) the V
Question 2:
Answer 2:
The Voltage Reference module is not intended to drive large loads. A buffer must be used
between the PICmicro’s V
My V
I am connecting V
the expected level.
REF
is not what I expect.
REF
DD
pin and the load.
will translate directly onto the V
REF
DD
divider which generates the V
into a low impedance circuit, and the V
REF
pin. Also ensure that you have
1997 Microchip Technology Inc.
REF
.
REF
is not at