PIC18F4431-E/ML Microchip Technology, PIC18F4431-E/ML Datasheet - Page 200

• Manufacturer Part Number: PIC18F4431-E/ML
• Description: IC MCU FLASH 8KX16 44QFN
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4431-E/ML

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 9x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F2331/2431/4331/4431
18.12.3
While in the Fault state (i.e., one or both FLTA and
FLTB inputs are active), the PWM output signals are
driven into their inactive states. The selection of which
PWM outputs are deactivated (while in the Fault state)
is determined by the FLTCON bit in the FLTCONFIG
register as follows:
• FLTCON = 1: When FLTA or FLTB is asserted,
• FLTCON = 0: When FLTA or FLTB is asserted,
DS39616D-page 200
the PWM outputs (i.e., PWM<7:0>) are driven into
their inactive state.
only PWM<5:0> outputs are driven inactive,
leaving PWM<7:6> activated.
Note:
PWM OUTPUTS WHILE IN FAULT
CONDITION
Disabling only three PWM channels and
leaving one PWM channel enabled when
in the Fault state, allows the flexibility to
have at least one PWM channel enabled.
None of the PWM outputs can be enabled
(driven with the PWM Duty Cycle
registers) while FLTCON = 1 and the Fault
condition is present.
Emulator (ICE) or an In-Circuit Debugger (ICD). Setting
18.12.4
The BRFEN bit in the FLTCONFIG register controls the
simulation of a Fault condition, when a breakpoint is hit,
while debugging the application using an In-Circuit
the BRFEN to high, enables the Fault condition on
breakpoint, thus driving the PWM outputs to the inactive
state. This is done to avoid any continuous keeping of
status on the PWM pin, which may result in damage of
the power devices connected to the PWM outputs.
If BRFEN = 0, the Fault condition on breakpoint is
disabled.
Note:
PWM OUTPUTS IN DEBUG MODE
It is highly recommended to enable the
Fault condition on breakpoint if a debug-
ging tool is used while developing the
firmware and high-power circuitry. When
the device is ready to program after
debugging the firmware, the BRFEN bit
can be disabled.
 2010 Microchip Technology Inc.