C8051F502-IMR Silicon Laboratories Inc, C8051F502-IMR Datasheet - Page 128

• Manufacturer Part Number: C8051F502-IMR
• Description: MCU 8-Bit C8051F50x 8051 CISC 64KB Flash 2.5V/3.3V/5V 32-Pin QFN EP T/R
• Manufacturer: Silicon Laboratories Inc

Specifications of C8051F502-IMR

• Package: 32QFN EP
• Device Core: 8051
• Family Name: C8051F50x
• Maximum Speed: 50 MHz
• Ram Size: 4.25 KB
• Program Memory Size: 64 KB
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 25
• Interface Type: I2C/SPI/UART
• On-chip Adc: 32-chx12-bit
• Operating Temperature: -40 to 125 °C
• Number Of Timers: 4

C8051F50x/F51x
SFR Definition 14.7. IT01CF: INT0/INT1 Configuration
SFR Address = 0xE4; SFR Page = 0x0F
128
Name
Reset
6:4
2:0
Bit
Type
7
3
Bit
IN1SL[2:0] INT1 Port Pin Selection Bits.
IN0SL[2:0] INT0 Port Pin Selection Bits.
IN1PL
IN0PL
Name
IN1PL
R/W
7
0
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
independent of the Crossbar; INT1 will monitor the assigned Port pin without disturb-
ing 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.
000: Select P1.0
001: Select P1.1
010: Select P1.2
011: Select P1.3
100: Select P1.4
101: Select P1.5
110: Select P1.6
111: Select P1.7
INT0 Polarity.
0: INT0 input is active low.
1: INT0 input is active high.
These bits select which Port pin is assigned to INT0. Note that this pin assignment is
independent of the Crossbar; INT0 will monitor the assigned Port pin without disturb-
ing 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.
000: Select P1.0
001: Select P1.1
010: Select P1.2
011: Select P1.3
100: Select P1.4
101: Select P1.5
110: Select P1.6
111: Select P1.7
6
0
IN1SL[2:0]
R/W
5
0
Rev. 1.2
4
0
Function
IN0PL
R/W
3
0
2
0
IN0SL[2:0]
R/W
1
0
0
0