DM300023 Microchip Technology, DM300023 Datasheet - Page 203

• Manufacturer Part Number: DM300023
• Description: KIT DEMO DSPICDEM SMPS BUCK
• Manufacturer: Microchip Technology
• Series: dsPIC™r

Specifications of DM300023

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 2, Non-Isolated
• Voltage - Input: 7 ~ 15V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: dsPIC30F2020
• Processor To Be Evaluated: dsPIC30F202x/1010
• Interface Type: RS-232
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Output: -
• Power - Output: -
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

REGISTER 18-2:
© 2006 Microchip Technology Inc.
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-12
bit 11-8
bit 7-4
bit 3-0
R/W-0
R/W-0
TSEQ3<3:0>: Tune Sequence Value #3 bits
When PWM ROLL<2:0> = 011, this field is used to tune the FRC instead of TUN<3:0>
TSEQ2<3:0>: Tune Sequence Value #2 bits
When PWM ROLL<2:0> = 010, this field is used to tune the FRC instead of TUN<3:0>
TSEQ1<3:0>: Tune Sequence Value #1 bits
When PWM ROLL<2:0> = 001, this field is used to tune the FRC instead of TUN<3:0>
TUN<3:0>: Specifies the user tuning capability for the internal fast RC oscillator . If the TSEQEN bit
0111 = Maximum frequency
0110 =
0101 =
0100 =
0011 =
0010 =
0001 =
0000 = Center frequency, oscillator is running at calibrated frequency
1111 =
1110 =
1101 =
1100 =
1011 =
1010 =
1001 =
1000 = Minimum frequency
R/W-0
R/W-0
in the OSCCON register is set, this field, along with bits TSEQ1-TSEQ7, will sequentially tune the
FRC oscillator.
OSCTUN: OSCILLATOR TUNING REGISTER
TSEQ3<3:0>
TSEQ1<3:0>
W = Writable bit
‘1’ = Bit is set
R/W-0
R/W-0
R/W-0
R/W-0
Preliminary
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
R/W-0
dsPIC30F1010/202X
R/W-0
R/W-0
TSEQ2<3:0>
TUN<3:0>
x = Bit is unknown
R/W-0
R/W-0
DS70178C-page 201
R/W-0
R/W-0
bit 8
bit 0