PIC16C773-E/SS Microchip Technology, PIC16C773-E/SS Datasheet - Page 99
![IC MCU OTP 4KX14 A/D PWM 28SSOP](/photos/6/81/68119/150-28-ssop_sml.jpg)
PIC16C773-E/SS
Manufacturer Part Number
PIC16C773-E/SS
Description
IC MCU OTP 4KX14 A/D PWM 28SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16C773SO.pdf
(201 pages)
3.PIC16C773SO.pdf
(13 pages)
4.PIC16C773SO.pdf
(16 pages)
Specifications of PIC16C773-E/SS
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
22
Program Memory Size
7KB (4K x 14)
Program Memory Type
OTP
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 6x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
28-SSOP
For Use With
309-1025 - ADAPTER 28-SSOP TO 28-DIP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
PIC16C773E/SS
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- PIC16F616T-ISL PDF datasheet
- PIC16C773SO PDF datasheet #2
- PIC16C773SO PDF datasheet #3
- PIC16C773SO PDF datasheet #4
- Current page: 99 of 201
- Download datasheet (3Mb)
9.1
The BRG supports both the Asynchronous and Syn-
chronous modes of the USART. 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 9-1
baud rate for different USART modes which only apply
in master mode (internal clock).
Given the desired baud rate and Fosc, the nearest inte-
ger value for the SPBRG register can be calculated
using the formula in
baud rate can be determined.
Example 9-1
error for the following conditions:
TABLE 9-1
X = value in SPBRG (0 to 255)
TABLE 9-2
Address Name
98h
18h
99h
Legend: x = unknown, - = unimplemented read as '0'. Shaded cells are not used by the BRG.
1999 Microchip Technology Inc.
SYNC
0
1
F
Desired Baud Rate = 9600
BRGH = 0
SYNC = 0
OSC
USART Baud Rate Generator (BRG)
shows the formula for computation of the
TXSTA
RCSTA
SPBRG Baud Rate Generator Register
= 16 MHz
shows the calculation of the baud rate
BAUD RATE FORMULA
REGISTERS ASSOCIATED WITH BAUD RATE GENERATOR
Table
(Asynchronous) Baud Rate = F
(Synchronous) Baud Rate = F
CSRC
SPEN
Bit 7
9-1. From this, the error in
Bit 6
RX9
BRGH = 0 (Low Speed)
TX9
SREN CREN ADDEN
TXEN
Bit 5
Advance Information
SYNC
Bit 4
OSC
OSC
/(64(X+1))
/(4(X+1))
Bit 3
—
EXAMPLE 9-1:
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 output-
ting the new baud rate.
9.1.1
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.
Desired Baud rate = Fosc / (64 (X + 1))
Calculated Baud Rate=16000000 / (64 (25 + 1))
Error
BRGH TRMT
FERR OERR RX9D
Bit 2
9600 =
X
=
=
=
=
SAMPLING
Bit 1
(Calculated Baud Rate - Desired Baud Rate)
=
9615
(9615 - 9600) / 9600
0.16%
OSC
16000000 /(64 (X + 1))
/(16(X + 1)) equation can reduce the
Baud Rate= F
25.042 = 25
TX9D
Bit 0
CALCULATING BAUD RATE
ERROR
BRGH = 1 (High Speed)
Desired Baud Rate
PIC16C77X
0000 -010
0000 000x
0000 0000
Value on:
POR,
BOR
NA
OSC
DS30275A-page 99
/(16(X+1))
0000 -010
0000 000x
0000 0000
other resets
Value on all
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