MCP1631RD-MCC2 Microchip Technology, MCP1631RD-MCC2 Datasheet - Page 132

• Manufacturer Part Number: MCP1631RD-MCC2
• Description: REFERENCE DESIGN MCP1631HV
• Manufacturer: Microchip Technology

Specifications of MCP1631RD-MCC2

• Main Purpose: Power Management, Battery Charger
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP1631HV, PIC16F883
• Primary Attributes: 1 ~ 2 Cell- Li-Ion, 1 ~ 5 Cell- NiCd/NiMH, 1 ~ 2 1W LEDs
• Secondary Attributes: Status LEDs
• Silicon Manufacturer: Microchip
• Application Sub Type: Battery Charger
• Kit Application Type: Power Management - Battery
• Silicon Core Number: MCP1631HV, PIC16F883
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC16F882/883/884/886/887
11.5.3
The resolution determines the number of available duty
cycles for a given period. For example, a 10-bit resolution
will result in 1024 discrete duty cycles, whereas an 8-bit
resolution will result in 256 discrete duty cycles.
The maximum PWM resolution is 10 bits when PR2 is
255. The resolution is a function of the PR2 register
value as shown by Equation 11-4.
TABLE 11-3:
TABLE 11-4:
DS41291F-page 130
Timer Prescale (1, 4, 16)
PR2 Value
Maximum Resolution (bits)
Timer Prescale (1, 4, 16)
PR2 Value
Maximum Resolution (bits)
PWM Frequency
PWM Frequency
PWM RESOLUTION
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS (F
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS (F
1.22 kHz
1.22 kHz
0xFF
0x65
16
10
16
8
4.88 kHz
4.90 kHz
0xFF
0x65
10
4
4
8
19.53 kHz
19.61 kHz
EQUATION 11-4:
0xFF
Note:
0x65
10
1
1
8
Resolution
If the pulse width value is greater than the
period the assigned PWM pin(s) will
remain unchanged.
78.12 kHz
76.92 kHz
0x3F
0x19
1
8
1
6
OSC
OSC
=
PWM RESOLUTION
log
----------------------------------------- - bits
© 2009 Microchip Technology Inc.
= 20 MHz)
= 8 MHz)
[
4 PR2
153.85 kHz
log
156.3 kHz
(
0x0C
0x1F
2 ( )
1
7
1
5
+
1
)
]
208.3 kHz
200.0 kHz
0x17
0x09
6.6
1
1
5