Silicon Laboratories C8051F347, C8051F346, C8051F341 SFR Definition 15.19. P3SKIP Port3 Skip

C8051F340/1/2/3/4/5/6/7

SFR Definition 15.19. P3SKIP: Port3 Skip

R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W		Reset Value
								00000000
Bit7	Bit6	Bit5	Bit4	Bit3	Bit2	Bit1	Bit0		SFR Address:

0xDF

Bits7–0: P3SKIP[3:0]: Port3 Crossbar Skip Enable Bits.

These bits select Port pins to be skipped by the Crossbar Decoder. Port pins used as ana- log inputs (for ADC or Comparator) or used as special functions (VREF input, external oscil- lator circuit, CNVSTR input) should be skipped by the Crossbar.

0: Corresponding P3.n pin is not skipped by the Crossbar.

1: Corresponding P3.n pin is skipped by the Crossbar.

Note: P3.1–3.7 are only available on 48-pin devices.

SFR Definition 15.20. P4: Port4 Latch

R/W		R/W	R/W	R/W	R/W	R/W	R/W	R/W	Reset Value
P4.7		P4.6	P4.5	P4.4	P4.3	P4.2	P4.1	P4.0	11111111
Bit7		Bit6	Bit5	Bit4	Bit3	Bit2	Bit1	Bit0	SFR Address:
									0xC7
Bits7–0:	P4.[7:0]
	Write - Output appears on I/O pins.

0: Logic Low Output.

1: Logic High Output (high impedance if corresponding P4MDOUT.n bit = 0).

Read - Always reads ‘0’ if selected as analog input in register P4MDIN. Directly reads Port pin when configured as digital input.

0: P4.n pin is logic low.

1: P4.n pin is logic high.

Note: P4 is only available on 48-pin devices.

160 Rev. 0.5