C8051F581-IMR Silicon Labs, C8051F581-IMR Datasheet - Page 195

• Manufacturer Part Number: C8051F581-IMR
• Description: 8-bit Microcontrollers - MCU 50MIPS 128kB 8kB SPI
• Manufacturer: Silicon Labs

Specifications of C8051F581-IMR

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

SFR Definition 20.2. XBR1: Port I/O Crossbar Register 1
SFR Address = 0xE2; SFR Page = 0x0F
Name
Reset
Bit
4:2 PCA0ME[2:0] PCA0 Module I/O Enable Bits.
Type
7
6
5
1
0
Bit
Reserved
SYSCKE
Name
ECIE
T1E
T0E
R/W
T1E
7
0
T1 Enable.
0: T1 unavailable at Port pin.
1: T1 routed to Port pin.
T0 Enable.
0: T0 unavailable at Port pin.
1: T0 routed to Port pin.
PCA0 External Counter Input Enable.
0: ECI unavailable at Port pin.
1: ECI routed to Port pin.
000: All PCA0 I/O unavailable at Port pins.
001: CEX0 routed to Port pin.
010: CEX0, CEX1 routed to Port pins.
011: CEX0, CEX1, CEX2 routed to Port pins.
100: CEX0, CEX1, CEX2, CEX3 routed to Port pins.
101: CEX0, CEX1, CEX2, CEX3, CEX4 routed to Port pins.
110: CEX0, CEX1, CEX2, CEX3, CEX4, CEX5 routed to Port pins.
111: RESERVED
SYSCLK Output Enable.
0: SYSCLK unavailable at Port pin.
1: SYSCLK output routed to Port pin.
Always Write to 0.
R/W
T0E
6
0
ECIE
R/W
5
0
Rev. 1.2
R/W
4
0
PCA0ME[2:0]
Function
R/W
3
0
C8051F58x/F59x
R
2
0
SYSCKE
R/W
1
0
Reserved
R/W
0
0
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