PIC16F747-E/P Microchip Technology, PIC16F747-E/P Datasheet - Page 137
![IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,DIP,40PIN,PLASTIC](/photos/6/61/66192/150-40-dip_sml.jpg)
PIC16F747-E/P
Manufacturer Part Number
PIC16F747-E/P
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,DIP,40PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F737-ISP.pdf
(276 pages)
4.PIC16F737-ISP.pdf
(10 pages)
Specifications of PIC16F747-E/P
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
36
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Ram Size
368 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
I3DBF777 - BOARD DAUGHTER ICEPIC3DVA18XP400 - DEVICE ADAPTER 18F4220 PDIP 40LD
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F747-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F737-ISP PDF datasheet #3
- PIC16F737-ISP PDF datasheet #4
- Current page: 137 of 276
- Download datasheet (6Mb)
11.1
The BRG supports both the Asynchronous and
Synchronous modes of the AUSART. It is a dedicated
8-bit Baud Rate Generator. The SPBRG register
controls the period of a free running 8-bit timer. In
Asynchronous mode, bit BRGH (TXSTA<2>) also
controls the baud rate. In Synchronous mode, bit
BRGH is ignored. Table 11-1 shows the formula for
computation of the baud rate for different AUSART
modes which only apply in Master mode (internal
clock).
Given the desired baud rate and F
integer value for the SPBRG register can be calculated
using the formula in Table 11-1. From this, the error in
baud rate can be determined.
TABLE 11-1:
TABLE 11-2:
2004 Microchip Technology Inc.
Legend: X = value in SPBRG (0 to 255).
98h
18h
99h
Legend:
Address
SYNC
0
1
AUSART Baud Rate Generator
(BRG)
TXSTA
RCSTA
SPBRG
x = unknown, — = unimplemented, read as ‘0’. Shaded cells are not used by the BRG.
Name
(Asynchronous) Baud Rate = F
(Synchronous) Baud Rate = F
BAUD RATE FORMULA
REGISTERS ASSOCIATED WITH BAUD RATE GENERATOR
Baud Rate Generator Register
CSRC
SPEN
Bit 7
BRGH = 0 (Low Speed)
Bit 6
RX9
TX9
OSC
SREN
TXEN
Bit 5
, the nearest
OSC
OSC
CREN
SYNC
Bit 4
/(64(X + 1))
/(4(X + 1))
ADDEN
Bit 3
—
It may be advantageous to use the high baud rate
(BRGH = 1) even for slower baud clocks. This is
because the F
baud rate error in some cases.
Writing a new value to the SPBRG register causes the
BRG timer to be reset (or cleared). This ensures the
BRG does not wait for a timer overflow before
outputting the new baud rate.
11.1.1
The data on the RC7/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.
BRGH
FERR
Bit 2
SAMPLING
OERR
TRMT
Bit 1
Baud Rate = F
OSC
BRGH = 1 (High Speed)
/(16(X + 1)) equation can reduce the
RX9D
TX9D
Bit 0
PIC16F7X7
N/A
OSC
0000 -010
0000 000x
0000 0000
POR, BOR
Value on:
/(16(X + 1))
DS30498C-page 135
0000 -010
0000 000x
0000 0000
Value on
all other
Resets
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