C8051F34A-GMR Silicon Labs, C8051F34A-GMR Datasheet - Page 96

• Manufacturer Part Number: C8051F34A-GMR
• Description: 8-bit Microcontrollers - MCU 48 MIPS 64KB 10ADC
• Manufacturer: Silicon Labs

Specifications of C8051F34A-GMR

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

C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
96
Bit7:
Bits6–4: IN1SL2–0: INT1 Port Pin Selection Bits
Bit3:
Bits2–0: INT0SL2–0: INT0 Port Pin Selection Bits
Note: Refer to SFR Definition 21.1 for INT0/1 edge- or level-sensitive interrupt selection.
IN1PL
R/W
Bit7
IN1PL: INT1 Polarity
0: INT1 input is active low.
1: INT1 input is active high.
These bits select which Port pin is assigned to INT1. Note that this pin assignment is inde-
pendent of the Crossbar; INT1 will monitor the assigned Port pin without disturbing the
peripheral that has been assigned the Port pin via the Crossbar. The Crossbar will not
assign the Port pin to a peripheral if it is configured to skip the selected pin (accomplished by
setting to ‘1’ the corresponding bit in register P0SKIP).
IN0PL: INT0 Polarity
0: INT0 interrupt is active low.
1: INT0 interrupt is active high.
These bits select which Port pin is assigned to INT0. Note that this pin assignment is inde-
pendent of the Crossbar. INT0 will monitor the assigned Port pin without disturbing the
peripheral that has been assigned the Port pin via the Crossbar. The Crossbar will not
assign the Port pin to a peripheral if it is configured to skip the selected pin (accomplished by
setting to ‘1’ the corresponding bit in register P0SKIP).
IN1SL2–0
IN0SL2–0
IN1SL2
R/W
Bit6
000
001
010
100
101
000
001
010
100
101
011
110
111
011
110
111
SFR Definition 9.13. IT01CF: INT0/INT1 Configuration
IN1SL1
R/W
Bit5
INT1 Port Pin
INT0 Port Pin
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
IN1SL0
R/W
Bit4
Rev. 1.3
IN0PL
R/W
Bit3
IN0SL2
R/W
Bit2
IN0SL1
R/W
Bit1
IN0SL0
R/W
Bit0
SFR Address:
00000001
Reset Value
0xE4