C8051F703-GQR Silicon Labs, C8051F703-GQR Datasheet - Page 86
![no-image](/images/no-image-200.jpg)
C8051F703-GQR
Manufacturer Part Number
C8051F703-GQR
Description
8-bit Microcontrollers - MCU 16kB Cap Sense
Manufacturer
Silicon Labs
Datasheet
1.C8051F709-GQR.pdf
(306 pages)
Specifications of C8051F703-GQR
Rohs
yes
Core
8051
Data Bus Width
8 bit
Processor Series
C8051
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F703-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
- Current page: 86 of 306
- Download datasheet (2Mb)
C8051F70x/71x
15.7. CS0 Pin Monitor
The CS0 module provides accurate conversions in all operating modes of the CPU, peripherals and I/O
ports. Pin monitoring circuits are provided to improve interference immunity from high-current output pin
switching. The Capacitive Sense Pin Monitor register (CS0PM, SFR Definition 15.9) controls the operation
of these pin monitors.
Conversions in the CS0 module are immune to any change on digital inputs and immune to most output
switching. Even high-speed serial data transmission will not affect CS0 operation as long as the output
load is limited. Output changes that switch large loads such as LEDs and heavily-loaded communications
lines can affect conversion accuracy. For this reason, the CS0 module includes pin monitoring circuits that
will, if enabled, automatically adjust conversion timing if necessary to eliminate any effect from high-current
output pin switching.
The pin monitor enable bit should be set for any output signal that is expected to drive a large load.
Example: The SMBus in a system is heavily loaded with multiple slaves and a long PCB route. Set the
SMBus pin monitor enable, SMBPM = 1.
Example: Timer2 controls an LED on Port 1, pin 3 to provide variable dimming. Set the Port SFR write
monitor enable, PIOPM = 1.
Example: The SPI bus is used to communicate to a nearby host. The pin monitor is not needed because
the output is not heavily loaded, SPIPM remains = 0, the default reset state.
Pin monitors should not be enabled unless they are required. The pin monitor works by repeating any por-
tion of a conversion that may have been corrupted by a change on an output pin. Setting pin monitor
enables bits will slow CS0 conversions.
The frequency of CS0 retry operations can be limited by setting the CSPMMD bits. In the default (reset)
state, all converter retry requests will be performed. This is the recommended setting for all applications.
The number of retries per conversion can be limited to either two or four retries by changing CSPMMD.
Limiting the number of retries per conversion ensures that even in circumstances where extremely fre-
quent high-power output switching occurs, conversions will be completed, though there may be some loss
of accuracy due to switching noise.
Activity of the pin monitor circuit can be detected by reading the Pin Monitor Event bit, CS0PME, in register
CS0CN. This bit will be set if any CS0 converter retries have occurred. It remains set until cleared by soft-
ware or a device reset.
86
Rev. 1.0
Related parts for C8051F703-GQR
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![CP2102EK](/photos/9/3/90395/cp2102ek_tmb.jpg)
Part Number:
Description:
KIT EVALUATION FOR CP2102
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![CP2103EK](/photos/9/6/90669/cp2103ek_tmb.jpg)
Part Number:
Description:
KIT EVAL FOR CP2103 USB TO UART
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![CP2201EK](/photos/9/9/90977/cp2201ek_tmb.jpg)
Part Number:
Description:
KIT EVAL FOR CP2201 ETH CTRLR
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![CAPTOUCHSENSEDC](/photos/9/20/92001/captouchsensedc_tmb.jpg)
Part Number:
Description:
DAUGHTER CARD CAP TOUCH SENSE
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![CAPTOUCHSENSESK](/photos/9/20/92002/captouchsensesk_tmb.jpg)
Part Number:
Description:
KIT STARTER CAP TOUCH SENSE
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![C8051F320DK](/photos/9/20/92068/c8051f320dk_tmb.jpg)
Part Number:
Description:
DEV KIT FOR C8051F320/F321
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![C8051F120DK](/photos/9/20/92070/c8051f120dk_tmb.jpg)
Part Number:
Description:
DEVKIT-F120/21/22/23/24/25/26/27
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![C8051F310DK](/photos/9/23/92300/c8051f310dk_tmb.jpg)
Part Number:
Description:
DEV KIT FOR C8051F310/F311
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![C8051F226DK](/photos/9/23/92302/c8051f226dk_tmb.jpg)
Part Number:
Description:
DEV KIT F220/221/226/230/231/236
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![C8051F300DK](/photos/9/23/92305/c8051f300dk_tmb.jpg)
Part Number:
Description:
DEV KIT F300/301/302/303/304/305
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![C8051F330DK](/photos/9/23/92306/c8051f330dk_tmb.jpg)
Part Number:
Description:
DEV KIT FOR C8051F330/F331
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![C8051F005DK](/photos/9/23/92307/c8051f005dk_tmb.jpg)
Part Number:
Description:
DEV KIT FOR F005/006/007
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![C8051F020DK](/photos/9/23/92314/c8051f020dk_tmb.jpg)
Part Number:
Description:
DEV KIT FOR F020/F021/F022/F023
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![C8051F340DK](/photos/9/23/92323/c8051f340dk_tmb.jpg)
Part Number:
Description:
KIT DEV FOR C8051F34X
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![C8051F410DK](/photos/9/23/92324/c8051f410dk_tmb.jpg)
Part Number:
Description:
KIT DEV FOR C8051F41X
Manufacturer:
Silicon Laboratories Inc
Datasheet: