PIC12HV609-I/P Microchip Technology, PIC12HV609-I/P Datasheet - Page 89

• Manufacturer Part Number: PIC12HV609-I/P
• Description: IC PIC MCU FLASH 1KX14 8DIP
• Manufacturer: Microchip Technology
• Series: PIC® 12Fr

Specifications of PIC12HV609-I/P

• Program Memory Type: FLASH
• Program Memory Size: 1.75KB (1K x 14)
• Package / Case: 8-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 5
• Ram Size: 64 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC12H
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 64 B
• Interface Type: RS-232 / USB
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 5
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC162083 - HEADER MPLAB ICD2 PIC16F616 8/14AC162058 - HEADER MPLAB ICD2 FOR PIC12F683AC124001 - MODULE SKT PROMATEII 8DIP/SOIC
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

10.4.3
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
• Setting the ECCPASE bit in firmware
FIGURE 10-10:
© 2006 Microchip Technology Inc.
From Comparator
INT
ENHANCED PWM AUTO-
SHUTDOWN MODE
ECCPAS<2:0>
AUTO-SHUTDOWN BLOCK DIAGRAM
111
110
101
100
011
010
001
000
From Data Bus
Write to ECCPASE
PRSEN
PIC12F609/615/12HV609/615
Preliminary
R
D
Q
S
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. Refer to Figure 1.
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 10.4.4 “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)
ECCPASE
PSSAC<1>
PSSBD<1>
PSSAC<0>
P1A_DRV
PSSBD<0>
P1B_DRV
TRISx
TRISx
1
0
1
0
DS41302A-page 87
P1A
P1B