MCP1631RD-MCC1 Microchip Technology, MCP1631RD-MCC1 Datasheet - Page 142

• Manufacturer Part Number: MCP1631RD-MCC1
• Description: REFERENCE DESIGN FOR MCP1631HV
• Manufacturer: Microchip Technology
• Type: Battery Managementr

Specifications of MCP1631RD-MCC1

• Main Purpose: Power Management, Battery Charger
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP1631HV, PIC16F883
• Primary Attributes: 1 ~ 2 Cell- Li-Ion, 1 ~ 4 Cell- NiCd/NiMH
• Secondary Attributes: Status LEDs
• Supported Devices: MCP1631HV, PIC16F883 Device Type
• Tool / Board Applications: Power Management-Battery Management
• Development Tool Type: Reference Design
• Input Voltage: 5.5 V to 16 V
• Product: Power Management Modules
• Mcu Supported Families: MCP1631HV/PIC16F883 Family
• Silicon Manufacturer: Microchip
• Silicon Core Number: MCP1631HV
• Kit Application Type: Reference Design
• Application Sub Type: Battery Charger
• Kit Contents: Board Only
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: MCP1631HV, PIC16F883
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC16F882/883/884/886/887
11.6.3
When any PWM mode is used, the application
hardware must use the proper external pull-up and/or
pull-down resistors on the PWM output pins.
The CCP1M<1:0> bits of the CCP1CON register allow
the user to choose whether the PWM output signals are
active-high or active-low for each pair of PWM output pins
(P1A/P1C and P1B/P1D). The PWM output polarities
must be selected before the PWM pin output drivers are
enabled. Changing the polarity configuration while the
PWM pin output drivers are enable is not recommended
since it may result in damage to the application circuits.
The P1A, P1B, P1C and P1D output latches may not be
in the proper states when the PWM module is
initialized. Enabling the PWM pin output drivers at the
same time as the Enhanced PWM modes may cause
damage to the application circuit. The Enhanced PWM
modes must be enabled in the proper Output mode and
complete a full PWM cycle before enabling the PWM
pin output drivers. The completion of a full PWM cycle
is indicated by the TMR2IF bit of the PIR1 register
being set as the second PWM period begins.
DS41291F-page 140
Note:
START-UP CONSIDERATIONS
When the microcontroller is released from
Reset, all of the I/O pins are in the
high-impedance state. The external cir-
cuits must keep the power switch devices
in the Off state until the microcontroller
drives the I/O pins with the proper signal
levels or activates the PWM output(s).
© 2009 Microchip Technology Inc.