PIC16F84A-20/SS Microchip Technology, PIC16F84A-20/SS Datasheet - Page 670

• 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
C.7
C.8
C.9
DS31034A-page 34-18
USART
Device Oscillator
Parallel Slave Port
The original USART/SCI module that was offered on Midrange devices specified a “high speed”
mode (when the BRGH control bit is set). Due to the design of the sampling circuitry, the opera-
tion of this mode was not as robust as desired. The sampling circuitry has been changed so that
operation now meets Microchip’s requirements. The difference in the sampling is described in the
“USART”
Table C-5:
A new mode has been added into the device oscillator which allows the device to operate from
an internal RC. This is specified at time of device programming (configuration word). This mode
will be included on many future devices. See the device data sheets configuration word to deter-
mine if the device supports this mode.
The control pins have changed from level sensitive to edge sensitive.
Table C-6:
PIC16C63
PIC16CR63
PIC16C65
PIC16C65A
PIC16CR65
PIC16C66
PIC16C67
PIC16C73
PIC16C73A
PIC16C74
PIC16C74A
PIC16C76
PIC16C77
New Devices with
USART/SCI module
PIC16C64
PIC16C64A
PIC16C65
PIC16C65A
PIC16C67
PIC16C74
PIC16C74A
PIC16C77
New Devices with
Parallel Slave Port
section.
Device
Device
USART/SCI Sampling Logic
Parallel Slave Port Change Sensitivity
Table C-5
shows which devices use the new and old sampling logic.
Level
Old
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
—
—
—
—
—
—
—
—
—
—
—
Sampling Logic
Sensitivity
1997 Microchip Technology Inc.
Edge
New
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
—
—
—
—
—
—
—
—
—
—
—
—