C8051F52X_12 Datasheet, PDF (42/221 Pages) Silicon Laboratories – 8/4/2 kB ISP Flash MCU Family

C8051F52x/F53x
Table 3.4. Pin Definitions for the C8051F53x and C805153xA (TSSOP 20) (Continued)
Name Pin Numbers Type Description
‘F53xA ‘F53x
‘F53x-C
P0.4/TX* 19 — D I/O or Port 0.4. See Port I/O Section for a complete description.
A In
P0.4/RX* — 19 D I/O or Port 0.4. See Port I/O Section for a complete description.
A In
P0.3
20 — D I/O or Port 0.3. See Port I/O Section for a complete description.
A In
P0.3/TX* — 20 D I/O or Port 0.3. See Port I/O Section for a complete description.
A In
*Note: Please refer to Section “20. Device Specific Behavior” on page 210.
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Rev. 1.4