PIC16LF1826-I/SS Microchip Technology Inc., PIC16LF1826-I/SS Datasheet - Page 245
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PIC16LF1826-I/SS
Manufacturer Part Number
PIC16LF1826-I/SS
Description
3.5 KB Flash, 256 bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhanced Mid Range Core, n
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F1826-ISO.pdf
(406 pages)
Specifications of PIC16LF1826-I/SS
A/d Inputs
12-Channel, 10-Bit
Comparators
2
Cpu Speed
8 MIPS
Eeprom Memory
256 Bytes
Input Output
16
Interface
I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin SSOP
Programmable Memory
3.5K Bytes
Ram Size
256 Bytes
Speed
32 MHz
Temperature Range
–40 to 125 °C
Timers
2-8-bit, 1-16-bit
Voltage, Range
1.8-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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25.4.5
The I
transition of SDAx from a high to a low state while
SCLx line is high. A Start condition is always gener-
ated by the master and signifies the transition of the
bus from an Idle to an Active state.
shows wave forms for Start and Stop conditions.
A bus collision can occur on a Start condition if the
module samples the SDAx line low before asserting it
low. This does not conform to the I
states no bus collision can occur on a Start.
25.4.6
A Stop condition is a transition of the SDAx line from
low-to-high state while the SCLx line is high.
FIGURE 25-12:
FIGURE 25-13:
2011 Microchip Technology Inc.
Note: At least one SCLx low time must appear
2
C specification defines a Start condition as a
START CONDITION
STOP CONDITION
before a Stop is valid, therefore, if the SDAx
line goes low then high again while the SCLx
line stays high, only the Start condition is
detected.
SDAx
SCLx
I
I
2
2
C START AND STOP CONDITIONS
C RESTART CONDITION
Condition
Start
S
2
C Specification that
Data Allowed
Data Allowed
Figure 25-10
Change of
Change of
Condition
Restart
Sr
25.4.7
A Restart is valid any time that a Stop would be valid.
A master can issue a Restart if it wishes to hold the
bus after terminating the current transfer. A Restart
has the same effect on the slave that a Start would,
resetting all slave logic and preparing it to clock in an
address. The master may want to address the same or
another slave.
In 10-bit Addressing Slave mode a Restart is required
for the master to clock data out of the addressed
slave. Once a slave has been fully addressed, match-
ing both high and low address bytes, the master can
issue a Restart and the high address byte with the
R/W bit set. The slave logic will then hold the clock
and prepare to clock out data.
After a full match with R/W clear in 10-bit mode, a prior
match flag is set and maintained. Until a Stop condi-
tion, a high address with R/W clear, or high address
match fails.
25.4.8
The SCIE and PCIE bits of the SSPxCON3 register
can enable the generation of an interrupt in Slave
modes that do not typically support this function. Slave
modes where interrupt on Start and Stop detect are
already enabled, these bits will have no effect.
Data Allowed
PIC16(L)F1826/27
Change of
Data Allowed
RESTART CONDITION
START/STOP CONDITION INTERRUPT
MASKING
Change of
Condition
Stop
P
DS41391D-page 245
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