C8051F131R Silicon Labs, C8051F131R Datasheet - Page 157

• Manufacturer Part Number: C8051F131R
• Description: 8-bit Microcontrollers - MCU 128kB 100MIPS 8448B RAM
• Manufacturer: Silicon Labs

Specifications of C8051F131R

• Product Category: 8-bit Microcontrollers - MCU
• Core: 8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 100 MHz
• Program Memory Size: 128 KB
• Data Ram Size: 8.25 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 2.7 V to 3.6 V
• Package / Case: TQFP-64
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 9
• Data Rom Size: 64 KB
• Interface Type: I2C, SMBus, SPI, UART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 32
• Number Of Timers: 16 bit
• Processor Series: C8051
• Program Memory Type: Flash
• Factory Pack Quantity: 500
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3 V

11.3.5. Interrupt Register Descriptions
The SFRs used to enable the interrupt sources and set their priority level are described below. Refer to the
datasheet section associated with a particular on-chip peripheral for information regarding valid interrupt
conditions for the peripheral and the behavior of its interrupt-pending flag(s).
Bit7:
Bit6:
Bit5:
Bit4:
Bit3:
Bit2:
Bit1:
Bit0:
R/W
EA
Bit7
EA: Enable All Interrupts.
This bit globally enables/disables all interrupts. It overrides the individual interrupt mask set-
tings.
0: Disable all interrupt sources.
1: Enable each interrupt according to its individual mask setting.
IEGF0: General Purpose Flag 0.
This is a general purpose flag for use under software control.
ET2: Enabler Timer 2 Interrupt.
This bit sets the masking of the Timer 2 interrupt.
0: Disable Timer 2 interrupt.
1: Enable Timer 2 interrupt.
ES0: Enable UART0 Interrupt.
This bit sets the masking of the UART0 interrupt.
0: Disable UART0 interrupt.
1: Enable UART0 interrupt.
ET1: Enable Timer 1 Interrupt.
This bit sets the masking of the Timer 1 interrupt.
0: Disable Timer 1 interrupt.
1: Enable Timer 1 interrupt.
EX1: Enable External Interrupt 1.
This bit sets the masking of External Interrupt 1.
0: Disable External Interrupt 1.
1: Enable External Interrupt 1.
ET0: Enable Timer 0 Interrupt.
This bit sets the masking of the Timer 0 interrupt.
0: Disable Timer 0 interrupts.
1: Enable Timer 0 interrupts.
EX0: Enable External Interrupt 0.
This bit sets the masking of External Interrupt 0.
0: Disable External Interrupt 0.
1: Enable External Interrupt 0.
IEGF0
R/W
Bit6
SFR Definition 11.12. IE: Interrupt Enable
ET2
R/W
Bit5
ES0
R/W
Bit4
Rev. 1.4
ET1
R/W
Bit3
C8051F120/1/2/3/4/5/6/7
EX1
R/W
Bit2
C8051F130/1/2/3
ET0
R/W
Bit1
SFR Address:
SFR Page:
EX0
R/W
Bit0
0xA8
All Pages
00000000
Addressable
Reset Value
Bit
157