PIC16F72-I/ML Microchip Technology, PIC16F72-I/ML Datasheet - Page 341
![IC PIC MCU FLASH 2KX14 28-QFN](/photos/6/81/68120/150-28-qfn_sml.jpg)
PIC16F72-I/ML
Manufacturer Part Number
PIC16F72-I/ML
Description
IC PIC MCU FLASH 2KX14 28-QFN
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F818-ISO.pdf
(6 pages)
4.PIC16F72-ISO.pdf
(136 pages)
5.PIC16F72-ISO.pdf
(6 pages)
6.PIC16F72-ISO.pdf
(136 pages)
Specifications of PIC16F72-I/ML
Core Size
8-Bit
Program Memory Size
3.5KB (2K x 14)
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Core Processor
PIC
Speed
20MHz
Connectivity
I²C, SPI
Number Of I /o
22
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 5x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Controller Family/series
PIC16F
No. Of I/o's
22
Ram Memory Size
128Byte
Cpu Speed
20MHz
No. Of Timers
3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT28QFN4 - SOCKET TRANS ICE 28QFN W/CABLEAC164322 - MODULE SOCKET MPLAB PM3 28/44QFN
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
PIC16F72-I/MLR
PIC16F72-I/MLR
PIC16F72-I/MLR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F818-ISO PDF datasheet #3
- PIC16F72-ISO PDF datasheet #4
- PIC16F72-ISO PDF datasheet #5
- PIC16F72-ISO PDF datasheet #6
- Current page: 341 of 688
- Download datasheet (3Mb)
18.3
TXSTA
RCSTA
SPBRG
Legend: x = unknown, - = unimplemented read as '0'. Shaded cells are not used by the BRG.
1997 Microchip Technology Inc.
Name
USART Baud Rate Generator (BRG)
Baud Rate Generator Register
CSRC
SPEN
Bit 7
The BRG supports both the Asynchronous and Synchronous modes of the USART. It is a dedi-
cated 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.
different USART modes which only apply in master mode (internal clock).
Given the desired baud rate and Fosc, the nearest integer value for the SPBRG register can be
calculated using the formula in
255). From this, the error in baud rate can be determined.
Table 18-1: Baud Rate Formula
Example 18-1
Example 18-1:
It may be advantageous to use the high baud rate (BRGH = 1) even for slower baud clocks. This
is because the F
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.
Table 18-2: Registers Associated with Baud Rate Generator
X = value in SPBRG (0 to 255)
Bit 6
RX9
TX9
Desired Baud rate
Calculated Baud Rate =
Error
SYNC
F
Desired Baud Rate = 9600
BRGH = 0
SYNC = 0
0
1
OSC
SREN
TXEN
Bit 5
= 16 MHz
9600
X
(Asynchronous) Baud Rate = F
shows the calculation of the baud rate error for the following conditions:
(Synchronous) Baud Rate = F
OSC
Calculating Baud Rate Error
CREN
SYNC
Bit 4
/ (16(X + 1)) equation can reduce the baud rate error in some cases.
=
=
=
=
=
=
=
BRGH = 0 (Low Speed)
Bit 3
Table 18-1
Fosc / (64 (X + 1))
16000000 / (64 (X + 1))
16000000 / (64 (25 + 1))
9615
(Calculated Baud Rate - Desired Baud Rate)
(9615 - 9600) / 9600
0.16%
25.042 = 25
—
—
Table
BRGH
FERR
18-1, where X equals the value in the SPBRG register (0 to
Bit 2
shows the formula for computation of the baud rate for
Desired Baud Rate
Section 18. USART
OSC
OSC
OERR
TRMT
Bit 1
/(64(X+1))
/(4(X+1))
RX9D
TX9D
Bit 0
Baud Rate= F
0000 -010
0000 -00x
0000 0000
Value on:
BRGH = 1 (High Speed)
POR,
BOR
DS31018A-page 18-5
NA
OSC
other resets
Value on all
0000 -010
0000 -00x
0000 0000
/(16(X+1))
18
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