PIC16F84A-20/SS Microchip Technology, PIC16F84A-20/SS Datasheet - Page 510

• Manufacturer Part Number: PIC16F84A-20/SS
• Description: IC MCU FLASH 1KX14 EE 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F84A-20/SS

• Core Size: 8-Bit
• Program Memory Size: 1.75KB (1K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 13
• 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: 0°C ~ 70°C
• Package / Case: 20-SSOP
• Controller Family/series: PIC16F
• No. Of I/o's: 13
• Eeprom Memory Size: 64Byte
• Ram Memory Size: 68Byte
• Cpu Speed: 20MHz
• No. Of Timers: 1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SS1-1 - SOCKET TRANSITION 20DIP 20SSOPI3-DB16F84A - BOARD DAUGHTER ICEPIC3AC164307 - MODULE SKT FOR PM3 28SSOPAC164018 - MODULE SKT PROMATEII 20SSOP
• Data Converters: -
• Connectivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PICmicro MID-RANGE MCU FAMILY
28.1
DS31028A-page 28-2
Introduction
All midrange devices can be In-Circuit Serial Programmed (ICSP™) while in the end application
circuit. This is simply done with two lines for clock and data, and three other lines for power,
ground, and the programming voltage.
In-Circuit Serial Programming (ICSP™) is a great way to reduce your inventory overhead and
time-to-market for your product. By assembling your product with a blank Microchip microcontrol-
ler (MCU), you can stock one design. When an order has been placed, these units can be pro-
grammed with the latest revision of firmware, tested, and shipped in a very short time. This
method also reduces scrapped inventory due to old firmware revisions. This type of manufactur-
ing system can also facilitate quick turnarounds on custom orders for your product.
Most people would think to use ICSP with PICmicro™ OTP MCUs only on an assembly line
where the device is programmed once. However, there is a method by which an OTP device can
be programmed several times depending on the size of the firmware. This method, explained
later, provides a way to field upgrade your firmware in a way similar to EEPROM- or Flash-based
devices.
1997 Microchip Technology Inc.