PIC16F1947-I/PT Microchip Technology, PIC16F1947-I/PT Datasheet - Page 248
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PIC16F1947-I/PT
Manufacturer Part Number
PIC16F1947-I/PT
Description
IC MCU 8BIT FLASH 64TQFP
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheets
1.PIC16F722-ISS.pdf
(8 pages)
2.PIC16LF1933-ISS.pdf
(46 pages)
3.PIC16LF1946-IPT.pdf
(448 pages)
4.PIC16LF1946-IPT.pdf
(6 pages)
5.PIC16F1946-IPT.pdf
(8 pages)
6.PIC16F1946-EPT.pdf
(440 pages)
Specifications of PIC16F1947-I/PT
Core Size
8-Bit
Program Memory Size
28KB (16K x 14)
Core Processor
PIC
Speed
32MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
54
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 17x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TFQFP
Controller Family/series
PIC16F
Eeprom Memory Size
256Byte
Ram Memory Size
1024Byte
Cpu Speed
32MHz
No. Of Timers
5
Interface
EUSART, I2C, SPI
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
EUSART, I2C, SPI
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
54
Number Of Timers
5
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 17 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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- PIC16F722-ISS PDF datasheet
- PIC16LF1933-ISS PDF datasheet #2
- PIC16LF1946-IPT PDF datasheet #3
- PIC16LF1946-IPT PDF datasheet #4
- PIC16F1946-IPT PDF datasheet #5
- PIC16F1946-EPT PDF datasheet #6
- Current page: 248 of 440
- Download datasheet (5Mb)
PIC16F/LF1946/47
23.3
The
multi-master serial data communication bus. Devices
communicate in a master/slave environment where the
master devices initiate the communication. A Slave
device is controlled through addressing.
The I
• Serial Clock (SCLx)
• Serial Data (SDAx)
Figure 23-11 shows the block diagram of the MSSPx
module when operating in I
Both the SCLx and SDAx connections are bidirectional
open-drain lines, each requiring pull-up resistors for the
supply voltage. Pulling the line to ground is considered
a logical zero and letting the line float is considered a
logical one.
Figure 23-11 shows a typical connection between two
processors configured as master and slave devices.
The I
devices and one or more slave devices.
There are four potential modes of operation for a given
device:
• Master Transmit mode
• Master Receive mode
• Slave Transmit mode
• Slave Receive mode
To begin communication, a master device starts out in
Master Transmit mode. The master device sends out a
Start bit followed by the address byte of the slave it
intends to communicate with. This is followed by a sin-
gle Read/Write bit, which determines whether the mas-
ter intends to transmit to or receive data from the slave
device.
If the requested slave exists on the bus, it will respond
with an Acknowledge bit, otherwise known as an ACK.
The master then continues in either Transmit mode or
Receive mode and the slave continues in the comple-
ment, either in Receive mode or Transmit mode,
respectively.
A Start bit is indicated by a high-to-low transition of the
SDAx line while the SCLx line is held high. Address and
data bytes are sent out, Most Significant bit (MSb) first.
The Read/Write bit is sent out as a logical one when the
master intends to read data from the slave, and is sent
out as a logical zero when it intends to write data to the
slave.
DS41414A-page 246
(master is transmitting data to a slave)
(master is receiving data from a slave)
(slave is transmitting data to a master)
(slave is receiving data from the master)
2
2
C bus specifies two signal connections:
Inter-Integrated
C bus can operate with one or more master
I
2
C
MODE OVERVIEW
Circuit
2
C Mode.
Bus
(I²C™)
is
Preliminary
a
FIGURE 23-11:
The Acknowledge bit (ACK) is an active-low signal,
which holds the SDAx line low to indicate to the trans-
mitter that the slave device has received the transmit-
ted data and is ready to receive more.
The transition of a data bit is always performed while
the SCLx line is held low. Transitions that occur while
the SCLx line is held high are used to indicate Start and
Stop bits.
If the master intends to write to the slave, then it repeat-
edly sends out a byte of data, with the slave responding
after each byte with an ACK bit. In this example, the
master device is in Master Transmit mode and the
slave is in Slave Receive mode.
If the master intends to read from the slave, then it
repeatedly receives a byte of data from the slave, and
responds after each byte with an ACK bit. In this exam-
ple, the master device is in Master Receive mode and
the slave is Slave Transmit mode.
On the last byte of data communicated, the master
device may end the transmission by sending a Stop bit.
If the master device is in Receive mode, it sends the
Stop bit in place of the last ACK bit. A Stop bit is indi-
cated by a low-to-high transition of the SDAx line while
the SCLx line is held high.
In some cases, the master may want to maintain con-
trol of the bus and re-initiate another transmission. If
so, the master device may send another Start bit in
place of the Stop bit or last ACK bit when it is in receive
mode.
The I
• Single message where a master writes data to a
• Single message where a master reads data from
• Combined message where a master initiates a
slave.
a slave.
minimum of two writes, or two reads, or a
combination of writes and reads, to one or more
slaves.
Master
2
C bus specifies three message protocols;
SDAx
SCLx
V
V
I
SLAVE CONNECTION
2
DD
DD
2010 Microchip Technology Inc.
C MASTER/
SCLx
SDAx
Slave
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