PIC16LF1826-E/P Microchip Technology, PIC16LF1826-E/P Datasheet - Page 270
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PIC16LF1826-E/P
Manufacturer Part Number
PIC16LF1826-E/P
Description
18 Pin, 3.5 KB Flash, 256 Bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhanced Mid Range
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheet
1.PIC16F1826-IP.pdf
(406 pages)
Specifications of PIC16LF1826-E/P
Core Processor
PIC
Core Size
8-Bit
Speed
32MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-DIP (0.300", 7.62mm)
Processor Series
PIC16LF
Core
PIC
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PIC16F/LF1826/27
24.6.7
Master mode reception is enabled by programming the
Receive Enable bit, RCEN bit of the SSPxCON2
register.
The Baud Rate Generator begins counting and on each
rollover, the state of the SCLx pin changes
(high-to-low/low-to-high) and data is shifted into the
SSPxSR. After the falling edge of the eighth clock, the
receive enable flag is automatically cleared, the con-
tents of the SSPxSR are loaded into the SSPxBUF, the
BF flag bit is set, the SSPxIF flag bit is set and the Baud
Rate Generator is suspended from counting, holding
SCLx low. The MSSPx is now in Idle state awaiting the
next command. When the buffer is read by the CPU,
the BF flag bit is automatically cleared. The user can
then send an Acknowledge bit at the end of reception
by setting the Acknowledge Sequence Enable, ACKEN
bit of the SSPxCON2 register.
24.6.7.1
In receive operation, the BF bit is set when an address
or data byte is loaded into SSPxBUF from SSPxSR. It
is cleared when the SSPxBUF register is read.
24.6.7.2
In receive operation, the SSPxOV bit is set when 8 bits
are received into the SSPxSR and the BF flag bit is
already set from a previous reception.
24.6.7.3
If the user writes the SSPxBUF when a receive is
already in progress (i.e., SSPxSR is still shifting in a
data byte), the WCOL bit is set and the contents of the
buffer are unchanged (the write doesn’t occur).
DS41391C-page 270
Note:
I
The MSSPx module must be in an Idle
state before the RCEN bit is set or the
RCEN bit will be disregarded.
2
C MASTER MODE RECEPTION
BF Status Flag
SSPxOV Status Flag
WCOL Status Flag
Preliminary
24.6.7.4
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Master clears SSPxIF and reads the received
11. Master sets ACK value sent to slave in ACKDT
12. Masters ACK is clocked out to the Slave and
13. User clears SSPxIF.
14. Steps 8-13 are repeated for each received byte
15. Master sends a not ACK or Stop to end
The user generates a Start condition by setting
the SEN bit of the SSPxCON2 register.
SSPxIF is set by hardware on completion of the
Start.
SSPxIF is cleared by software.
User writes SSPxBUF with the slave address to
transmit and the R/W bit set.
Address is shifted out the SDAx pin until all 8 bits
are transmitted. Transmission begins as soon
as SSPxBUF is written to.
The MSSPx module shifts in the ACK bit from
the slave device and writes its value into the
ACKSTAT bit of the SSPxCON2 register.
The MSSPx module generates an interrupt at
the end of the ninth clock cycle by setting the
SSPxIF bit.
User sets the RCEN bit of the SSPxCON2 regis-
ter and the Master clocks in a byte from the slave.
After the 8th falling edge of SCLx, SSPxIF and
BF are set.
byte from SSPxUF, clears BF.
bit of the SSPxCON2 register and initiates the
ACK by setting the ACKEN bit.
SSPxIF is set.
from the slave.
communication.
Typical Receive Sequence:
2010 Microchip Technology Inc.
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