PIC32 WFI32 2.0 Curiosity HPC Board has four on-board clock
sources for various sections and applications.
Secondary Oscillator
RTCC operation for the
WFI32E04 Module can be derived
either through internal LPRC or external 32.768 kHz oscillator (SOSC) available on
the
PIC32 WFI32 2.0 Curiosity HPC Board. The 32.768 kHz
crystal oscillator is connected to SOSC pins (SOSCI and SOSCO) of the
WFI32E04 Module.
Table 3-4. Secondary Oscillator
Specifications| Parameter | Attribute |
|---|
| Clock source | External crystal |
| Part number | FC-12M 32.7680KA-A5 |
| Reference designator | Y100 |
| Frequency | 32.768 kHz |
| Tolerance | ±20 ppm |
| Operating temperature range | -40°C to +85°C |
| ESR | 90 kΩ |
| Load capacitance | 12.5 pF |
| Drive level | 0.5 uW (maximum) |
| Aging | ±3 ppm per year (maximum) |
| Package | 2-SMD, no lead (2.05 mm x 1.20 mm) |
Ethernet Oscillator (X400)
By default, the
WFI32E04 Module drives the Ethernet
clock; however, the provision of an external 50 MHz crystal oscillator (X400) is
provided on the
PIC32 WFI32 2.0 Curiosity HPC Board.
Note:
- The user can configure
the ETH_CLK_OUT signal of the WFI32E04
Module as a clock source to the Ethernet interface but not as an input
to the WFI32E04 Module.
- By default, the Ethernet
oscillator (X400) is not populated on the PIC32 WFI32 2.0 Curiosity HPC Board.
PICkit®
On-board 4 (PKOB4) Oscillator (Y500)
On-board ATSAME70N21B-CNT MCU requires an external 12 MHz oscillator. By default,
this oscillator (Y500) is populated on the
PIC32 WFI32 2.0 Curiosity HPC Board.
Table 3-5. PKOB4 Oscillator
Specifications| Parameter | Attribute |
|---|
| Clock source | External CMOS oscillator |
| Part number | DSC6011JI1B-012.0000 |
| Reference designator | Y500 |
| Alternate part number | ECS-1633-120-BN-TR |
| Frequency | 12 MHz |
| Tolerance | ±50 ppm |
| Operating temperature range | -40°C to +85°C |
| Package | 4-VLGA, (2.5 mm x 2 mm) |
USB Hub Oscillator (Y600)
On-board two port USB Hub (USB2512B-I/M2) requires an external 24 MHz oscillator. By
default, this oscillator (Y600) is populated on the
PIC32 WFI32 2.0 Curiosity HPC Board.
| Parameter | Attribute |
|---|
| Clock source | External CMOS oscillator |
| Part number | DSC6011HI1B-024.0000 |
| Reference designator | Y600 |
| Alternate part number | ASA-24.000 MHZ-L-T |
| Frequency | 24 MHz |
| Tolerance | ±50 ppm |
| Operating temperature range | -40°C to +85°C |
| Package | 4-VLGA, (1.6 mm x 1.2 mm) |
USB-to-UART Converter Oscillator
(X600)
On-board two port USB Hub (USB2512B-I/M2) requires an external 24 MHz oscillator. By
default, this oscillator (X600) is populated on the
PIC32 WFI32 2.0 Curiosity HPC Board.
| Parameter | Attribute |
|---|
| Part number | CSTNE12M0G550000R0 |
| Reference Designator | X600 |
| Frequency | 12 MHz |
| Tolerance | ±0.2% |
| Operating temperature range | -40℃ to +85℃ |
| Package | 3-SMD, Non-standard |
