PIC16LF1517-E/PT Microchip Technology, PIC16LF1517-E/PT Datasheet - Page 133
PIC16LF1517-E/PT
Manufacturer Part Number
PIC16LF1517-E/PT
Description
40-pin, 14KB Flash, 512B RAM, 10-bit ADC, 2xCCP, SPI, MI2C, EUSART, 1.8V-3.6V 44
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheet
1.PIC16LF1517-IPT.pdf
(344 pages)
Specifications of PIC16LF1517-E/PT
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
36
Program Memory Size
14KB (8K x 14)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 28x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
*
Processor Series
PIC16LF151x
Core
PIC
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
I2C, SPI, USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
36
Number Of Timers
3
Operating Supply Voltage
1.8 V to 3.6 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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Part Number:
PIC16LF1517-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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13.0
The PORTB pins can be configured to operate as
Interrupt-On-Change (IOC) pins. An interrupt can be
generated by detecting a signal that has either a rising
edge or a falling edge. Any individual PORTB pin, or
combination of PORTB pins, can be configured to
generate an interrupt. The interrupt-on-change module
has the following features:
• Interrupt-on-Change enable (Master Switch)
• Individual pin configuration
• Rising and falling edge detection
• Individual pin interrupt flags
Figure 13-1
13.1
To allow individual PORTB pins to generate an interrupt,
the IOCIE bit of the INTCON register must be set. If the
IOCIE bit is disabled, the edge detection on the pin will
still occur, but an interrupt will not be generated.
13.2
For each PORTB pin, a rising edge detector and a falling
edge detector are present. To enable a pin to detect a
rising edge, the associated IOCBPx bit of the IOCBP
register is set. To enable a pin to detect a falling edge,
the associated IOCBNx bit of the IOCBN register is set.
A pin can be configured to detect rising and falling
edges simultaneously by setting both the IOCBPx bit
and the IOCBNx bit of the IOCBP and IOCBN registers,
respectively.
FIGURE 13-1:
2010 Microchip Technology Inc.
RBx
INTERRUPT-ON-CHANGE
Enabling the Module
Individual Pin Configuration
is a block diagram of the IOC module.
IOCBNx
IOCBPx
INTERRUPT-ON-CHANGE BLOCK DIAGRAM
D
CK
D
CK
R
R
Q
Q
Preliminary
Q2 Clock Cycle
individual pin detectors
From all other IOCBFx
13.3
The IOCBFx bits located in the IOCBF register are
status flags that correspond to the Interrupt-on-change
pins of PORTB. If an expected edge is detected on an
appropriately enabled pin, then the status flag for that pin
will be set, and an interrupt will be generated if the IOCIE
bit is set. The IOCIF bit of the INTCON register reflects
the status of all IOCBFx bits.
13.4
The individual status flags, (IOCBFx bits), can be
cleared by resetting them to zero. If another edge is
detected during this clearing operation, the associated
status flag will be set at the end of the sequence,
regardless of the value actually being written.
In order to ensure that no detected edge is lost while
clearing flags, only AND operations masking out known
changed bits should be performed. The following
sequence is an example of what should be performed.
EXAMPLE 13-1:
13.5
The interrupt-on-change interrupt sequence will wake
the device from Sleep mode, if the IOCIE bit is set.
If an edge is detected while in Sleep mode, the IOCBF
register will be updated prior to the first instruction
executed out of Sleep.
IOCBFx
PIC16(L)F1516/7/8/9
ANDWF
MOVLW
XORWF
Interrupt Flags
Clearing Interrupt Flags
Operation in Sleep
0xff
IOCBF, W
IOCBF, F
IOCIE
DS41452A-page 133
IOC Interrupt to
CPU Core
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