PIC16F74-I/P Microchip Technology, PIC16F74-I/P Datasheet - Page 349
PIC16F74-I/P
Manufacturer Part Number
PIC16F74-I/P
Description
IC MCU FLASH 4KX14 A/D 40DIP
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.PIC16F73-ISP.pdf
(174 pages)
5.PIC16F73-ISP.pdf
(14 pages)
6.PIC16F73-ISP.pdf
(12 pages)
Specifications of PIC16F74-I/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
FLASH
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
40-DIP (0.600", 15.24mm)
Controller Family/series
PIC16F
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
Processor Series
PIC16F
Core
PIC
Data Ram Size
192 B
Maximum Clock Frequency
20 MHz
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
ICE2000, DM163022
Minimum Operating Temperature
- 40 C
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
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- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F818-ISO PDF datasheet #3
- PIC16F73-ISP PDF datasheet #4
- PIC16F73-ISP PDF datasheet #5
- PIC16F73-ISP PDF datasheet #6
- Current page: 349 of 688
- Download datasheet (3Mb)
18.4.3
18.4.3.1
1997 Microchip Technology Inc.
(RX/DT pin)
(RX/DT pin)
baud CLK
baud CLK
Sampling
Device Exceptions
x16 CLK
x16 CLK
RX
RX
The data on the 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.
circuit. The sampling operates the same regardless of the state of the BRGH bit, only the source
of the x16 clock is different.
Figure 18-6:
All new devices will use the sampling scheme shown in
tion to the above sampling scheme are:
• PIC16C63
• PIC16C65
• PIC16C65A
• PIC16C73
• PIC16C73A
• PIC16C74
• PIC16C74A
These devices have a sampling circuitry that works as follows. If the BRGH bit (TXSTA<2>) is
clear (i.e., at the low baud rates), the sampling is done on the seventh, eighth and ninth falling
edges of a x16 clock
is done on the 3 clock edges preceding the second rising edge after the first falling edge of a x4
clock
Figure 18-7:
1
1
(Figure 18-8
2
2
3
3
4
4
RX Pin Sampling Scheme, BRGH = 0 or BRGH = 1
RX Pin Sampling Scheme (BRGH = 0)
and
(Figure
5
5
Figure
6
6
18-7). If bit BRGH is set (i.e., at the high baud rates), the sampling
18-9).
7
7
Samples
Samples
8
8
9
9
Start bit
Start bit
Figure 18-6
10
10
Section 18. USART
11
11
Baud CLK for all but start bit
Baud CLK for all but start bit
12
12
Figure
shows the waveform for the sampling
13
13
18-6. Devices that have an excep-
14
14
15
15
16
16
DS31018A-page 18-13
1
1
2
2
Bit0
Bit0
3
3
18
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