PIC16F627-20/P Microchip Technology, PIC16F627-20/P Datasheet - Page 75

• Manufacturer Part Number: PIC16F627-20/P
• Description: IC MCU FLASH 1KX14 COMP 18DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F627-20/P

• Core Size: 8-Bit
• Program Memory Size: 1.75KB (1K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 224 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 18-DIP (0.300", 7.62mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 16
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 224Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 224 B
• Interface Type: SCI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Operating Supply Voltage: 3 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• 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: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DVA16XP183 - ADAPTER ICE 18DIP/SOIC/SSOPAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Data Converters: -
• Lead Free Status / Rohs Status: Details

The data on the RB1/RX/DT pin is sampled three times
by a majority detect circuit to determine if a high or a
low level is present at the RX pin. If bit BRGH
(TXSTA<2>) is clear (i.e., at the low baud rates), the
sampling is done on the seventh, eighth and ninth
falling edges of a x16 clock (Figure 12-3). If bit BRGH
is set (i.e., at the high baud rates), the sampling is done
on the 3 clock edges preceding the second rising edge
after the first falling edge of a x4 clock (Figure 12-4 and
Figure 12-5).
FIGURE 12-1:
FIGURE 12-2:
FIGURE 12-3:
 2003 Microchip Technology Inc.
Q2, Q4 CLK
Baud CLK
(RB1/RX/DT pin)
x4 CLK
RX pin
baud CLK
x16 CLK
RX
RX PIN SAMPLING SCHEME. BRGH = 0
RX PIN SAMPLING SCHEME, BRGH = 1
Q2, Q4 clk
RX PIN SAMPLING SCHEME, BRGH = 1
RX pin
baud clk
1
x4 clk
2
First falling edge after RX pin goes low
3
1
4
5
1
START Bit
Samples
First falling edge after RX pin goes low
6
2
Preliminary
Samples
7
Samples
Second rising edge
3
START Bit
8
2
4
Second rising edge
9
START bit
1
Samples
10
Baud CLK for all but START bit
Bit0
2
11
Baud CLK for all but START bit
12
3
3
13
4
14
1
Samples
PIC16F62X
Bit1
15
2
16
1
DS40300C-page 73
4
2
Bit0
3
Bit0