PIC16C765-I/PT Microchip Technology, PIC16C765-I/PT Datasheet - Page 79
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PIC16C765-I/PT
Manufacturer Part Number
PIC16C765-I/PT
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,44PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16C745-ISP.pdf
(165 pages)
3.PIC16C745-ISP.pdf
(6 pages)
4.PIC16C745-ISP.pdf
(6 pages)
Specifications of PIC16C765-I/PT
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
24MHz
Connectivity
SCI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
33
Program Memory Size
14KB (8K x 14)
Program Memory Type
OTP
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.35 V ~ 5.25 V
Data Converters
A/D 8x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Processor Series
PIC16C
Core
PIC
Data Bus Width
8 bit
Data Ram Size
256 B
Maximum Clock Frequency
24 MHz
Number Of Programmable I/os
33
Number Of Timers
3 bit
Operating Supply Voltage
4.35 V to 5.25 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
ICE2000, DM163022
Minimum Operating Temperature
- 40 C
On-chip Adc
8 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT44PT3 - SOCKET TRAN ICE 44MQFP/TQFPAC164305 - MODULE SKT FOR PM3 44TQFPISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMING444-1001 - DEMO BOARD FOR PICMICRO MCUAC164020 - MODULE SKT PROMATEII 44TQFP
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16C765-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
11.1
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 11-1 shows the formula for computation of the
baud rate for different USART modes which only apply
in Master mode (internal clock).
Given the desired baud rate and F
ger 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:
2000 Microchip Technology Inc.
Desired
SYNC
Baud
230400
460800
921600
115200
0
1
19200
38400
57600
1200
2400
4800
9600
300
USART Baud Rate Generator (BRG)
1000000.00
230769.23
461538.46
115384.62
Actual
38461.54
57692.31
Baud
BAUD RATE FORMULA
BAUD RATES FOR
SYNCHRONOUS MODE
(Asynchronous) Baud Rate = F
(Synchronous) Baud Rate = F
% of Error
24 MHz
BRGH = 0 (Low Speed)
INT
8.51
0.16
0.16
0.16
0.16
0.16
, the nearest inte-
SPBRG
INT
INT
155
103
Preliminary
51
25
12
5
/(64(SPBRG+1))
/(4(SPBRG+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.
11.1.1
The data on the RC7/RX/DT pin is sampled three times
near the center of each bit time by a majority detect cir-
cuit to determine if a high or a low level is present at the
RX pin.
TABLE 11-3:
Desired
Baud
230400
460800
921600
115200
19200
38400
57600
1200
2400
4800
9600
300
SAMPLING
INT
PIC16C745/765
125000.00
Baud Rate = F
Actual
19736.84
41666.67
62500.00
Baud
/(16(X + 1)) equation can reduce the
2403.85
4807.69
9615.38
BAUD RATES FOR
ASYNCHRONOUS MODE
(BRGH = 0)
BRGH = 1 (High Speed)
% of Error
24 MHz
INT
NA
/(16(SPBRG+1))
0.16
0.16
0.16
2.80
8.51
8.51
8.51
DS41124C-page 79
SPBRG
155
77
38
18
8
5
2