This application specification describes in detail the differences between Philips SC16Cxxx single-channel and dual-channel devices and Philips low-power SC16CxxxB devices. It is intended to provide useful information for customers transitioning from the original Philips solution to the new solution.
The document provides a detailed comparison of the original SC16C series UARTs with the newer low‑power SC16CxxxB devices. It lists functional changes, register differences, and electrical characteristics for each device pair.
Key sections describe the removal of the EFR register, changes to flow‑control support, pin voltage tolerance, recommended external capacitor values, and sleep‑mode current. A migration guide at the end helps users select the appropriate replacement part for their design. This manual is written in Chinese.
| Sleep mode current (SC16Cxxx) | 1.2 mA |
|---|---|
| Sleep mode current (SC16CxxxB) | 50 μA |
| Pins not tolerant to 5 V | IOW, A0, reset, DCD |
| Recommended C1 value | 22 pF |
| Recommended C2 value | 33 pF |
SC16C550B lacks the EFR register, so it does not support automatic hardware flow control, automatic software flow control, special‑character selection, sleep mode, XOFF interrupt, CTS/RTS interrupt, or IrDA.
The pins IOW, A0, reset, and DCD cannot tolerate 5 V.
The sleep‑mode current is 50 μA.
C1 should be 22 pF and C2 should be 33 pF.