C8051F040-TB Silicon Laboratories Inc, C8051F040-TB Datasheet - Page 124

• Manufacturer Part Number: C8051F040-TB
• Description: BOARD PROTOTYPING W/C8051F040
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F040-TB

• Contents: Board
• Processor To Be Evaluated: C8051F04x
• Interface Type: USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F040
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

C8051F040/1/2/3/4/5/6/7
124
Bit7:
Bit6:
Bit5:
Bit4:
Bits3-2:
Bits1-0:
NOTE: Upon enabling a comparator, the output of the comparator is not immediately valid. Before
SFR Address: CPT0CN: 0x88; CPT1CN: 0x88; CPT2CN: 0x88
SFR Pages: CPT0CN:page 1;CPT1CN:page 2; CPT2CN:page 3
CPnEN
R/W
Bit7
CPnEN: Comparator Enable Bit. (Please see note below.)
0: Comparator Disabled.
1: Comparator Enabled.
CPnOUT: Comparator Output State Flag.
0: Voltage on CPn+ < CPn–.
1: Voltage on CPn+ > CPn–.
CPnRIF: Comparator Rising-Edge Interrupt Flag.
0: No Comparator Rising Edge Interrupt has occurred since this flag was last cleared.
1: Comparator Rising Edge Interrupt has occurred. Must be cleared by software.
CPnFIF: Comparator Falling-Edge Interrupt Flag.
0: No Comparator Falling-Edge Interrupt has occurred since this flag was last cleared.
1: Comparator Falling-Edge Interrupt has occurred. Must be cleared by software.
CPnHYP1-0: Comparator Positive Hysteresis Control Bits.
00: Positive Hysteresis Disabled.
01: Positive Hysteresis = 5 mV.
10: Positive Hysteresis = 10 mV.
11: Positive Hysteresis = 20 mV.
CPnHYN1-0: Comparator Negative Hysteresis Control Bits.
00: Negative Hysteresis Disabled.
01: Negative Hysteresis = 5 mV.
10: Negative Hysteresis = 10 mV.
11: Negative Hysteresis = 20 mV.
using a comparator as an interrupt or reset source, software should wait for a minimum of
the specified “Power-up time” as specified in Table 11.1, “Comparator Electrical Characteris-
tics,” on page 126.
SFR Definition 11.1. CPTnCN: Comparator 0, 1, and 2 Control
CPnOUT
Bit6
R
CPnRIF
R/W
Bit5
CPnFIF CPnHYP1 CPnHYP0 CPnHYN1 CPnHYN0 00000000
R/W
Bit4
Rev. 1.5
R/W
Bit3
R/W
Bit2
R/W
Bit1
R/W
Bit0
Reset Value