PIC16F887-I/PT Microchip Technology Inc., PIC16F887-I/PT Datasheet - Page 144
PIC16F887-I/PT
Manufacturer Part Number
PIC16F887-I/PT
Description
MCU, 8-Bit, 8KW Flash, 368 RAM, 36 I/O, TQFP-44
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F887-IPT.pdf
(288 pages)
Specifications of PIC16F887-I/PT
A/d Inputs
14-Channel, 10-Bit
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
256 Bytes
Frequency
20 MHz
Input Output
35
Interface
I2C/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
44-pin TFQP
Programmable Memory
14K Bytes
Ram Size
368 Bytes
Resistance, Drain To Source On
Bytes
Serial Interface
MSSP or EUSART
Speed
20 MHz
Timers
2-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F887-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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PIC16F882/883/884/886/887
FIGURE 11-14:
11.6.5
The Enhanced PWM can be configured to automati-
cally restart the PWM signal once the auto-shutdown
condition has been removed. Auto-restart is enabled by
setting the PRSEN bit in the PWM1CON register.
If auto-restart is enabled, the ECCPASE bit will remain
set as long as the auto-shutdown condition is active.
When the auto-shutdown condition is removed, the
ECCPASE bit will be cleared via hardware and normal
operation will resume.
FIGURE 11-15:
DS41291D-page 142
Note 1: The
Shutdown
Shutdown
2: Writing to the ECCPASE bit is disabled
3: Once the auto-shutdown condition has
ECCPASE bit
PWM
ECCPASE bit
PWM
AUTO-RESTART MODE
level-based signal, not an edge-based
signal. As long as the level is present, the
auto-shutdown will persist.
while
persists.
been removed and the PWM restarted
(either through firmware or auto-restart)
the PWM signal will always restart at the
beginning of the next PWM period.
Activity
Activity
Event
Event
auto-shutdown
an
PWM Period
PWM Period
PWM AUTO-SHUTDOWN WITH FIRMWARE RESTART (PRSEN = 0)
PWM AUTO-SHUTDOWN WITH AUTO-RESTART ENABLED (PRSEN = 1)
Start of
Start of
auto-shutdown
condition
Normal PWM
Normal PWM
condition
is
Preliminary
a
Event Occurs
Event Occurs
PWM Period
PWM Period
Shutdown
Shutdown
Event Clears
Event Clears
Shutdown
Shutdown
Cleared by
ECCPASE
Firmware
© 2007 Microchip Technology Inc.
Resumes
Resumes
PWM
PWM
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