PIC16C74A-20/P Microchip Technology, PIC16C74A-20/P Datasheet - Page 101
![IC MCU OTP 4KX14 A/D PWM 40DIP](/photos/6/61/66192/150-40-dip_sml.jpg)
PIC16C74A-20/P
Manufacturer Part Number
PIC16C74A-20/P
Description
IC MCU OTP 4KX14 A/D PWM 40DIP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F818-ISO.pdf
(6 pages)
3.PIC16C63A-04SP.pdf
(184 pages)
4.PIC16C72-04SO.pdf
(289 pages)
5.PIC16LC74A-04P.pdf
(8 pages)
Specifications of PIC16C74A-20/P
Core Size
8-Bit
Program Memory Size
7KB (4K x 14)
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Core Processor
PIC
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Number Of I /o
33
Program Memory Type
OTP
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Data Converters
A/D 8x8b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
40-DIP (0.600", 15.24mm)
Controller Family/series
PIC16C
No. Of I/o's
33
Ram Memory Size
192Byte
Cpu Speed
20MHz
No. Of Timers
3
Package
40PDIP
Device Core
PIC
Family Name
PIC16
Maximum Speed
20 MHz
Operating Supply Voltage
5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
33
Interface Type
I2C/SPI/USART
On-chip Adc
8-chx8-bit
Number Of Timers
3
Core
PIC
Processor Series
PIC16C
Maximum Clock Frequency
20 MHz
Data Ram Size
192 B
Data Rom Size
192 B
Mounting Style
Through Hole
A/d Bit Size
8 bit
A/d Channels Available
8
Height
3.81 mm
Length
52.26 mm
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Supply Voltage (max)
6 V
Supply Voltage (min)
4 V
Width
13.84 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
444-1001 - DEMO BOARD FOR PICMICRO MCU
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16C74A-20/PQ
Manufacturer:
Microchip Technology
Quantity:
10 000
Company:
Part Number:
PIC16C74A-20/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC16F818-ISO PDF datasheet #2
- PIC16C63A-04SP PDF datasheet #3
- PIC16C72-04SO PDF datasheet #4
- PIC16LC74A-04P PDF datasheet #5
- Current page: 101 of 289
- Download datasheet (3Mb)
12.1
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 12-1 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 Fosc, the nearest inte-
ger value for the SPBRG register can be calculated
using the formula in Table 12-1. From this, the error in
baud rate can be determined.
Example 12-1 shows the calculation of the baud rate
error for the following conditions:
TABLE 12-1:
X = value in SPBRG (0 to 255)
TABLE 12-2:
Address
98h
18h
99h
Legend: x = unknown, - = unimplemented read as '0'. Shaded cells are not used by the BRG.
1997 Microchip Technology Inc.
SYNC
0
1
F
Desired Baud Rate = 9600
BRGH = 0
SYNC = 0
OSC
USART Baud Rate Generator (BRG)
Applicable Devices
72 73 73A 74 74A 76 77
Name
TXSTA
RCSTA
SPBRG
= 16 MHz
BAUD RATE FORMULA
REGISTERS ASSOCIATED WITH BAUD RATE GENERATOR
(Asynchronous) Baud Rate = F
(Synchronous) Baud Rate = F
Baud Rate Generator Register
CSRC
SPEN
Bit 7
BRGH = 0 (Low Speed)
Bit 6
RX9
TX9
SREN CREN
TXEN SYNC
Bit 5
Bit 4
OSC
OSC
/(64(X+1))
/(4(X+1))
Bit 3
—
—
EXAMPLE 12-1: CALCULATING BAUD
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.
Desired Baud rate = Fosc / (64 (X + 1))
Calculated Baud Rate=16000000 / (64 (25 + 1))
Error
BRGH TRMT TX9D
FERR OERR RX9D
Bit 2
Note:
9600 =
X
=
=
=
=
Bit 1
For the PIC16C73/73A/74/74A, the asyn-
chronous high speed mode (BRGH = 1)
may experience a high rate of receive
errors. It is recommended that BRGH = 0.
If you desire a higher baud rate than
BRGH = 0 can support, refer to the device
errata for additional information, or use the
PIC16C76/77.
(Calculated Baud Rate - Desired Baud Rate)
=
9615
(9615 - 9600) / 9600
0.16%
OSC
16000000 /(64 (X + 1))
/(16(X + 1)) equation can reduce the
25.042 = 25
Baud Rate= F
Bit 0
RATE ERROR
Desired Baud Rate
BRGH = 1 (High Speed)
0000 -010
0000 -00x
0000 0000
Value on:
PIC16C7X
POR,
BOR
NA
OSC
DS30390E-page 101
/(16(X+1))
0000 -010
0000 -00x
0000 0000
other resets
Value on all
Related parts for PIC16C74A-20/P
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![PIC16C74A-10I/L](/photos/6/63/66325/150-44-plcc_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 44PLCC
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-04I/L](/photos/6/63/66325/150-44-plcc_tmb.jpg)
Part Number:
Description:
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,LDCC,44PIN,PLASTIC
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-04/L](/photos/6/63/66325/150-44-plcc_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 44PLCC
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-20/L](/photos/6/63/66325/150-44-plcc_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 44PLCC
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-20I/L](/photos/6/63/66325/150-44-plcc_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 44PLCC
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-10/PQ](/photos/6/59/65984/150-44-pqfp_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 44-MQFP
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-04E/P](/photos/6/61/66192/150-40-dip_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 40DIP
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-10/P](/photos/6/61/66192/150-40-dip_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 40DIP
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-04I/P](/photos/6/61/66192/150-40-dip_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 40DIP
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-10/L](/photos/6/63/66325/150-44-plcc_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 44PLCC
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-04/PQ](/photos/6/59/65984/150-44-pqfp_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 44-MQFP
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-10I/P](/photos/6/61/66192/150-40-dip_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 40DIP
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-20I/P](/photos/6/61/66192/150-40-dip_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 40DIP
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-20/PQ](/photos/6/59/65984/150-44-pqfp_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 44-MQFP
Manufacturer:
Microchip Technology
Datasheet:
![PIC16C74A-04I/PQ](/photos/6/59/65984/150-44-pqfp_tmb.jpg)
Part Number:
Description:
IC MCU OTP 4KX14 A/D PWM 44-MQFP
Manufacturer:
Microchip Technology
Datasheet: