C8051F989-GUR Silicon Labs, C8051F989-GUR Datasheet - Page 221

• Manufacturer Part Number: C8051F989-GUR
• Description: 8-bit Microcontrollers - MCU 4kB 512B RAM
• Manufacturer: Silicon Labs

Specifications of C8051F989-GUR

• Rohs: yes
• Core: 8051
• Data Bus Width: 8 bit
• Processor Series: C8051

SFR Definition 21.2. XBR1: Port I/O Crossbar Register 1
SFR Page = 0x0; SFR Address = 0xE2
Name
Reset
Type
7:6
2:0
Bit
Bit
5
4
3
PCA0ME PCA0 Module I/O Enable.
Unused
Name
ECIE
R/W
T1E
T0E
7
0
Read = 00b; Write = Don’t Care.
Timer1 Input Enable.
0: T1 input unavailable at Port pin.
1: T1 input routed to Port pin.
Timer0 Input Enable.
0: T0 input unavailable at Port pin.
1: T0 input routed to Port pin.
PCA0 External Counter Input (ECI) Enable.
0: PCA0 external counter input unavailable at Port pin.
1: PCA0 external counter input routed to Port pin.
000: All PCA0 I/O unavailable at Port pin.
001: CEX0 routed to Port pin.
010: CEX0, CEX1 routed to Port pins.
011: CEX0, CEX1, CEX2 routed to Port pins.
100: Reserved.
101: Reserved.
110: Reserved.
111: Reserved.
R/W
6
0
R/W
T1E
5
0
T0E
R/W
Rev. 1.1
4
0
C8051F99x-C8051F98x
Function
ECIE
R/W
3
0
R/W
2
0
PCA0ME[2:0]
R/W
1
0
R/W
0
0
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