If the CSB04PA1x module will be used for Bluetooth communication in a battery-powered device, MMB recommends the addition of an external LFXO crystal to enable operation in various sleep modes.
Connection Diagram
| Drawio | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
...
| Mfg. Part Number | Vendor | Load cap | Package | |||||
|---|---|---|---|---|---|---|---|---|
| CM2012H32768DZFT | Citizen Finedevice Co. | 12.5 pF | 2.0 x 1.2 mm | |||||
| TFE202P32K7680R | CTS | 12.5 pF | 2.0 x 1.2 mm | ABS07-120-32.768KHZ-T | Abracon | 6 pF | ||
| 3.2 x 1.5 mm | FX135A-327 | Fox Electronics | 12.5 pF | 3.2 x 1.5 mm | FX135B-327 | Fox Electronics | 9 pF | |
| 3.2 x 1.5 mm | G83270021 | Diodes Inc. | 12.5 pF | 3.2 x 1.5 mm | ECS-.327-7-34B-TR | ECS Inc. | 7pF | 3.2 x 1.5 mm |
| ECS-.327-12.5-34B-TR | ECS Inc. | 12.5 pF | 3.2 x 1.5 mm |
...
Other external crystals may be supported if their specifications match the ones shown in the table below.
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Frequency | f | 32. |
...
| 768 | kHz | ||||
| Equivalent series resistance (ESR) | ESR | 70 | kΩ | ||
| Load capacitance | CL | 12.5 | pF | ||
| Frequency tolerance | Ft | -20 | +20 | ppm |