Specifications

C8051F330/1
Rev. 1.1 119
Figure 14.6. XBR1: Port I/O Crossbar Register 1
Bit7: WEAKPUD: Port I/O Weak Pull-up Disable.
0: Weak Pull-ups enabled (except for Ports whose I/O are configured as analog input).
1: Weak Pull-ups disabled.
Bit6: XBARE: Crossbar Enable.
0: Crossbar disabled.
1: Crossbar enabled.
Bit5: T1E: T1 Enable
0: T1 unavailable at Port pin.
1: T1 routed to Port pin.
Bit4: T0E: T0 Enable
0: T0 unavailable at Port pin.
1: T0 routed to Port pin.
Bit3: ECIE: PCA0 External Counter Input Enable
0: ECI unavailable at Port pin.
1: ECI routed to Port pin.
Bit2: Unused. Read = 0b. Write = don’t care.
Bits1-0: PCA0ME: PCA Module I/O Enable Bits.
00: All PCA I/O unavailable at Port pins.
01: CEX0 routed to Port pin.
10: CEX0, CEX1 routed to Port pins.
11: CEX0, CEX1, CEX2 routed to Port pins.
R/W R/W R/W R/W R/W R R/W R/W Reset Value
WEAKPUD XBARE T1E T0E ECIE - PCA0ME 00000000
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFR Address:
0xE2