PIC16F1518-E/SP Microchip Technology, PIC16F1518-E/SP Datasheet - Page 226
![28-pin, 28KB Flash, 1024B RAM, 10-bit ADC, 2xCCP, SPI, MI2C, EUSART, 2.3V-5.5V 2](/photos/16/11/161110/pdip28_sml.jpg)
PIC16F1518-E/SP
Manufacturer Part Number
PIC16F1518-E/SP
Description
28-pin, 28KB Flash, 1024B RAM, 10-bit ADC, 2xCCP, SPI, MI2C, EUSART, 2.3V-5.5V 2
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheet
1.PIC16F1516-EMV.pdf
(344 pages)
Specifications of PIC16F1518-E/SP
Processor Series
PIC16F151x
Core
PIC
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
16 KB
Data Ram Size
1 KB
Interface Type
I2C, SPI, USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
25
Number Of Timers
3
Operating Supply Voltage
2.3 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
Through Hole
Package / Case
PDIP-28
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
25
Eeprom Size
-
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.3 V ~ 5.5 V
Data Converters
A/D 17x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Lead Free Status / Rohs Status
Details
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PIC16(L)F1516/7/8/9
21.6.13.1
During a Start condition, a bus collision occurs if:
a)
b)
During a Start condition, both the SDA and the SCL
pins are monitored.
If the SDA pin is already low, or the SCL pin is already
low, then all of the following occur:
• the Start condition is aborted,
• the BCLIF flag is set and
• the MSSP module is reset to its Idle state
The Start condition begins with the SDA and SCL pins
deasserted. When the SDA pin is sampled high, the
Baud Rate Generator is loaded and counts down. If the
SCL pin is sampled low while SDA is high, a bus colli-
sion occurs because it is assumed that another master
is attempting to drive a data ‘1’ during the Start
condition.
FIGURE 21-33:
DS41452B-page 226
(Figure
SDA or SCL are sampled low at the beginning of
the Start condition
SCL is sampled low before SDA is asserted low
(Figure
SDA
SCL
SEN
BCLIF
S
SSPIF
21-32).
21-33).
Bus Collision During a Start
Condition
BUS COLLISION DURING START CONDITION (SDA ONLY)
(Figure
condition if SDA = 1, SCL = 1
Set SEN, enable Start
SDA sampled low before
Start condition. Set BCLIF.
S bit and SSPIF set because
SDA = 0, SCL = 1.
21-32).
SDA goes low before the SEN bit is set.
Set BCLIF,
S bit and SSPIF set because
SDA = 0, SCL = 1.
Preliminary
SSPIF and BCLIF are
cleared by software
If the SDA pin is sampled low during this count, the
BRG is reset and the SDA line is asserted early
(Figure
pin, the SDA pin is asserted low at the end of the BRG
count. The Baud Rate Generator is then reloaded and
counts down to zero; if the SCL pin is sampled as ‘0’
during this time, a bus collision does not occur. At the
end of the BRG count, the SCL pin is asserted low.
Note:
SEN cleared automatically because of bus collision.
SSP module reset into Idle state.
21-34). If, however, a ‘1’ is sampled on the SDA
The reason that bus collision is not a fac-
tor during a Start condition is that no two
bus masters can assert a Start condition
at the exact same time. Therefore, one
master will always assert SDA before the
other. This condition does not cause a bus
collision because the two masters must be
allowed to arbitrate the first address fol-
lowing the Start condition. If the address is
the same, arbitration must be allowed to
continue into the data portion, Repeated
Start or Stop conditions.
SSPIF and BCLIF are
cleared by software
2011 Microchip Technology Inc.
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