DM163022 Microchip Technology, DM163022 Datasheet - Page 36

• Manufacturer Part Number: DM163022
• Description: BOARD DEMO PICDEM-2 PLUS
• Manufacturer: Microchip Technology
• Type: MCUr

Specifications of DM163022

• Contents: Board, CD, Sample Part
• Processor To Be Evaluated: PIC 16 and PIC 18
• Interface Type: RS-232
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC16, PIC18
• Silicon Core Number: PIC16F, PIC18F
• Silicon Family Name: PIC16F8xx, PIC18F4xxx
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PICDEM 2 Plus
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: DM163022R; DM163022R

MCP212X Developer’s Daughter Board User’s Guide
TABLE D-1:
TABLE D-2:
DS51571A-page 32
9600
19200
38400
57600
115200
9600
19200
38400
57600
115200
Baud Rate
Desired
Note 1:
Note 1:
Baud Rate
Desired
2:
3:
2:
3:
Shaded values indicate a % error that is larger than should be used.
The following shows the PICDEM™ Demo Board device frequencies:
PICDEM™ HPC Explorer Demo Board has a 10 MHz crystal installed (4xPLL -> 40 MHz).
PICDEM™ FS USB Demo Board has a 20 MHz crystal installed.
PICDEM™ 2 Plus Demo Board has a 4 MHz crystal installed.
PICDEM™ LCD has a socket for an external canned oscillator (also has an internal 8 MHz RC).
CCP Duty Cycle should be approximately 50% of the PR value.
Shaded values indicate a % error that is larger than should be used.
The following shows the PICDEM™ Demo Board device frequencies:
PICDEM™ HPC Explorer Demo Board has a 10 MHz crystal installed (4xPLL -> 40 MHz).
PICDEM™ FS USB Demo Board has a 20 MHz crystal installed.
PICDEM™ 2 Plus Demo Board has a 4 MHz crystal installed.
PICDEM™ LCD has a socket for an external canned oscillator (also has an internal 8 MHz RC).
SYNC = 0, BRGH = 1, BRG16 = 0.
153,600
307,200
614,400
921,600
1,843,200
16XCLK
PR VALUES FOR PWM
SPBRG VALUES FOR EUSART
SPBRG
The crystal frequency of the PICDEM™ Demo Board determines the error rates for the
EUSART baud rates, as well as the 16XCLK generation (for the MCP2122). So for the
PICDEM™ HPC Explorer Demo Board, the default crystal is 10 MHz (does have a 4x
PLL). Therefore, the 16XCLK frequency for 115200 baud has an error outside usable
limits for IrDA
Table D-1). The demo will be limited to 9600 baud. Table D-2 shows the SPBRG values
for the EUSART at the same crystal frequencies.
225
129
64
42
21
@ 40 MHz
(3)
PR
64
32
15
10
@ 40 MHz
4
%Error
-1.73%
-0.16%
(3)
-0.16%
-0.94%
1.36%
(2)
®
standard communication for both 10 MHz and 40 MHz operation (see
%Error
-0.16%
-1.73%
-8.51%
1.36%
1.36%
(2)
(1)
SPBRG
129
64
32
21
10
@ 20 MHz
(3)
PR
(1)
32
15
@ 20 MHz
7
4
2
(3)
%Error
-0.16%
-0.16%
1.36%
1.36%
1.36%
(2)
%Error
-1.73%
-1.73%
-8.51%
-35.6%
1.36%
(2)
SPBRG
@ 14.759 MHz
95
47
23
15
7
@ 14.759 MHz
PR
23
11
(3)
5
3
1
(3)
%Error
0%
0%
0%
0%
0%
%Error
© 2005 Microchip Technology Inc.
(2)
0%
0%
0%
0%
0%
(2)
SPBRG
64
32
15
10
PR
4
@ 10 MHz
15
@ 10 MHz
7
3
2
1
(3)
(3)
%Error
-0.16%
-1.73%
-8.51%
%Error
32.18%
1.36%
1.36%
-1.73%
-1.73%
-1.73%
9.58%
(2)
(2)