C8051F320/1

94 Rev. 1.4

SFR Definition 9.10.

Bit7: PT3: Timer 3 Interrupt Priority Control.

This bit sets the priority of the Timer 3 interrupt.

0: Timer 3 interrupts set to low priority level.

1: Timer 3 interrupts set to high priority level.

Bit6: PCP1: Comparator1 (CP1) Interrupt Priority Control.

This bit sets the priority of the CP1 interrupt.

0: CP1 interrupt set to low priority level.

1: CP1 interrupt set to high priority level.

Bit5: PCP0: Comparator0 (CP0) Interrupt Priority Control.

This bit sets the priority of the CP0 interrupt.

0: CP0 interrupt set to low priority level.

1: CP0 interrupt set to high priority level.

Bit4: PPCA0: Programmable Counter Array (PCA0) Interrupt Priority Control.

This bit sets the priority of the PCA0 interrupt.

0: PCA0 interrupt set to low priority level.

1: PCA0 interrupt set to high priority level.

Bit3: PADC0 ADC0 Conversion Complete Interrupt Priority Control.

This bit sets the priority of the ADC0 Conversion Complete interrupt.

0: ADC0 Conversion Complete interrupt set to low priority level.

1: ADC0 Conversion Complete interrupt set to high priority level.

Bit2: PWADC0: ADC0 Window Comparator Interrupt Priority Control.

This bit sets the priority of the ADC0 Window interrupt.

0: ADC0 Window interrupt set to low priority level.

1: ADC0 Window interrupt set to high priority level.

Bit1: PUSB0: USB0 Interrupt Priority Control.

This bit sets the priority of the USB0 interrupt.

0: USB0 interrupt set to low priority level.

1: USB0 interrupt set to high priority level.

Bit0: PSMB0: SMBus (SMB0) Interrupt Priority Control.

This bit sets the priority of the SMB0 interrupt.

0: SMB0 interrupt set to low priority level.

1: SMB0 interrupt set to high priority level.

R/W R/W R/W R/W R/W R/W R/W R/W Reset Value

PT3 PCP1 PCP0 PPCA0 PADC0 PWADC0 PUSB0 PSMB0 00000000

Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFR Address:

0xF6

EIP1: Extended Interrupt Priority 1

Rev. 1.4 95

C8051F320/1

SFR Definition 9.11.

Bits7–1: UNUSED. Read = 0000000b. Write = don’t care.

Bit0: EVBUS: Enable VBUS Level Interrupt.

This bit sets the masking of the VBUS interrupt.

0: Disable all VBUS interrupts.

1: Enable interrupt requests generated by VBUS level sense.

R/W R/W R/W R/W R/W R/W R/W R/W Reset Value

- - - - - - - EVBUS 00000000

Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFR Address:

0xE7

EIE2: Extended Interrupt Enable 2

SFR Definition 9.12.

Bits7–1: UNUSED. Read = 0000000b. Write = don’t care.

Bit0: PVBUS: VBUS Level Interrupt Priority Control.

This bit sets the priority of the VBUS interrupt.

0: VBUS interrupt set to low priority level.

1: VBUS interrupt set to high priority level.

R/W R/W R/W R/W R/W R/W R/W R/W Reset Value

- - - - - - - PVBUS 00000000

Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFR Address:

0xF7

EIP2: Extended Interrupt Priority 2

C8051F320/1

96 Rev. 1.4

SFR Definition 9.13.

Bit7: IN1PL: /INT1 Polarity

0: /INT1 input is active low.

1: /INT1 input is active high.

Bits6–4: IN1SL2–0: /INT1 Port Pin Selection Bits

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).

Bit3: IN0PL: /INT0 Polarity

0: /INT0 interrupt is active low.

1: /INT0 interrupt is active high.

Bits2–0: INT0SL2–0: /INT0 Port Pin Selection Bits

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).

R/W R/W R/W R/W R/W R/W R/W R/W Reset Value

IN1PL IN1SL2 IN1SL1 IN1SL0 IN0PL IN0SL2 IN0SL1 IN0SL0 00000001

Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFR Address:

0xE4

Note: Refer to Figure 19.1 for INT0/1 edge- or level-sensitive interrupt selection.

IN1SL2-0 /INT1 Port Pin

000 P0.0

001 P0.1

010 P0.2

011 P0.3

100 P0.4

101 P0.5

110 P0.6

111 P0.7

IN0SL2-0 /INT0 Port Pin

000 P0.0

001 P0.1

010 P0.2

011 P0.3

100 P0.4

101 P0.5

110 P0.6

111 P0.7

IT01CF: INT0/INT1 Configuration

Part #	C8051F321-GMR
Description	16KB,10ADC,USB,28PIN MCU (LEAD FREE) MLP28 -40 TO 85 DEG.
Category	IC
Availability	In Stock
Qty	560

Qty	Price
1 - 24	$10.41286
25 - 60	$8.28296
61 - 128	$7.80964
129 - 275	$7.25745
276 +	$6.46859

C8051F321-GMR

Related Items

Technical Document