PIC16F684T-E/ST Microchip Technology, PIC16F684T-E/ST Datasheet - Page 95
PIC16F684T-E/ST
Manufacturer Part Number
PIC16F684T-E/ST
Description
IC PIC MCU FLASH 2KX14 14TSSOP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F684-ISL.pdf
(4 pages)
4.PIC16F684-ISL.pdf
(192 pages)
5.PIC16F684-ISL.pdf
(6 pages)
Specifications of PIC16F684T-E/ST
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
12
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
14-TSSOP
For Use With
XLT14SS-1 - SOCKET TRANSITION 14DIP/14SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Connectivity
-
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- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F684-ISL PDF datasheet #3
- PIC16F684-ISL PDF datasheet #4
- PIC16F684-ISL PDF datasheet #5
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11.4.4
The PWM mode supports an Auto-Shutdown mode that
will disable the PWM outputs when an external
shutdown event occurs. Auto-Shutdown mode places
the PWM output pins into a predetermined state. This
mode is used to help prevent the PWM from damaging
the application.
The auto-shutdown sources are selected using the
ECCPASx bits of the ECCPAS register. A shutdown
event may be generated by:
• A logic ‘0’ on the INT pin
• Comparator 1
• Comparator 2
• Setting the ECCPASE bit in firmware
REGISTER 11-2:
© 2007 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6-4
bit 3-2
bit 1-0
ECCPASE
U-0
ENHANCED PWM
AUTO-SHUTDOWN MODE
ECCPASE: ECCP Auto-Shutdown Event Status bit
1 = A shutdown event has occurred; ECCP outputs are in shutdown state
0 = ECCP outputs are operating
ECCPAS<2:0>: ECCP Auto-shutdown Source Select bits
000 = Auto-Shutdown is disabled
001 = Comparator 1 output change
010 = Comparator 2 output change
011 = Either Comparator 1 or 2 change
100 = V
101 = V
110 = V
111 = V
PSSACn: Pins P1A and P1C Shutdown State Control bits
00 = Drive pins P1A and P1C to ‘0’
01 = Drive pins P1A and P1C to ‘1’
1x = Pins P1A and P1C tri-state
PSSBDn: Pins P1B and P1D Shutdown State Control bits
00 = Drive pins P1B and P1D to ‘0’
01 = Drive pins P1B and P1D to ‘1’
1x = Pins P1B and P1D tri-state
ECCPAS2
U-0
ECCPAS: ENHANCED CAPTURE/COMPARE/PWM AUTO-SHUTDOWN
CONTROL REGISTER
IL
IL
IL
IL
on INT pin
on INT pin or Comparator 1 change
on INT pin or Comparator 2 change
on INT pin or Comparator 1 or 2 change
W = Writable bit
‘1’ = Bit is set
ECCPAS1
R/W-0
ECCPAS0
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
PSSAC1
R/W-0
A shutdown condition is indicated by the ECCPASE
(Auto-Shutdown Event Status) bit of the ECCPAS
register. If the bit is a ‘0’, the PWM pins are operating
normally. If the bit is a ‘1’, the PWM outputs are in the
shutdown state.
When a shutdown event occurs, two things happen:
The ECCPASE bit is set to ‘1’. The ECCPASE will
remain set until cleared in firmware or an auto-restart
occurs (see Section 11.4.5 “Auto-Restart Mode”).
The enabled PWM pins are asynchronously placed in
their shutdown states. The PWM output pins are
grouped into pairs [P1A/P1C] and [P1B/P1D]. The state
of each pin pair is determined by the PSSAC and
PSSBD bits of the ECCPAS register. Each pin pair may
be placed into one of three states:
• Drive logic ‘1’
• Drive logic ‘0’
• Tri-state (high-impedance)
PSSAC0
R/W-0
x = Bit is unknown
PIC16F684
PSSBD1
R/W-0
DS41202F-page 93
PSSBD0
R/W-0
bit 0
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