C8051F813-GM Silicon Laboratories Inc, C8051F813-GM Datasheet - Page 65
C8051F813-GM
Manufacturer Part Number
C8051F813-GM
Description
IC MCU 8BIT 8KB FLASH 20QFN
Manufacturer
Silicon Laboratories Inc
Series
C8051F81xr
Datasheet
1.C8051F800DK.pdf
(250 pages)
Specifications of C8051F813-GM
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Cap Sense, POR, PWM, Temp Sensor, WDT
Number Of I /o
17
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-QFN
Processor Series
C8051F8x
Core
8051
Data Bus Width
16 bit
Data Ram Size
512 B
Interface Type
I2C, SPI, UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
17
Number Of Timers
3
Operating Supply Voltage
1.8 V to 3.6 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F800DK
Minimum Operating Temperature
- 55 C
On-chip Adc
10 bit, 16 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Other names
336-1786-5
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12. Comparator0
C8051F80x-83x devices include an on-chip programmable voltage comparator, Comparator0, shown in
Figure 12.1.
The Comparator offers programmable response time and hysteresis, an analog input multiplexer, and two
outputs that are optionally available at the Port pins: a synchronous “latched” output (CP0), or an asyn-
chronous “raw” output (CP0A). The asynchronous CP0A signal is available even when the system clock is
not active. This allows the Comparator to operate and generate an output with the device in STOP mode.
When assigned to a Port pin, the Comparator output may be configured as open drain or push-pull (see
Section “23.4. Port I/O Initialization” on page 147). Comparator0 may also be used as a reset source (see
Section “21.5. Comparator0 Reset” on page 127).
The Comparator0 inputs are selected by the comparator input multiplexer, as detailed in Section
“12.1. Comparator Multiplexer” on page 69.
The Comparator output can be polled in software, used as an interrupt source, and/or routed to a Port pin.
When routed to a Port pin, the Comparator output is available asynchronous or synchronous to the system
clock; the asynchronous output is available even in STOP mode (with no system clock active). When dis-
abled, the Comparator output (if assigned to a Port I/O pin via the Crossbar) defaults to the logic low state,
and the power supply to the comparator is turned off. See Section “23.3. Priority Crossbar Decoder” on
page 143 for details on configuring Comparator outputs via the digital Crossbar. Comparator inputs can be
externally driven from –0.25 V to (V
trical specifications are given in Section “7. Electrical Characteristics” on page 39.
Comparator
Input Mux
Figure 12.1. Comparator0 Functional Block Diagram
CPT0MD
CP0 +
CP0 -
DD
+
-
) + 0.25 V without damage or upset. The complete Comparator elec-
CPT0CN
VDD
GND
CP0RIF
CP0FIF
Decision
Reset
Tree
Rev. 1.0
(SYNCHRONIZER)
D
SET
CLR
Q
Q
0
1
0
1
D
SET
CLR
Q
Q
CP0EN
C8051F80x-83x
Crossbar
0
1
EA
0
1
CP0A
Interrupt
CP0
CP0
65
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