C8051F046-GQ Silicon Laboratories Inc, C8051F046-GQ Datasheet - Page 121

• Manufacturer Part Number: C8051F046-GQ
• Description: IC 8051 MCU 32K FLASH 100TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F04xr

Specifications of C8051F046-GQ

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: CAN, EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 64
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Processor Series: C8051F0x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 4.25 KB
• Interface Type: CAN, SMBus, SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 64
• Number Of Timers: 5
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F040DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 13 Channel
• On-chip Dac: 12 bit, 2 Channel
• Package: 100TQFP
• Device Core: 8051
• Family Name: C8051F04x
• Maximum Speed: 25 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 336-1211

11. Comparators
C8051F04x family of devices include three on-chip programmable voltage comparators, shown in
Figure 11.1. Each comparator offers programmable response time and hysteresis. When assigned to a
Port pin, the Comparator output may be configured as open drain or push-pull, and Comparator inputs
should be configured as analog inputs (see
log Inputs” on page
“13.5. Comparator0 Reset” on page
The output of a Comparator can be polled by software, used as an interrupt source, used as a reset
source, and/or routed to a Port pin. Each comparator can be individually enabled and disabled (shutdown).
When disabled, the Comparator output (if assigned to a Port I/O pin via the Crossbar) defaults to the logic
low state, and its supply current falls to less than 1 µA. See
and Allocation” on page 205
The Comparator inputs can be externally driven from -0.25 V to (V
The complete electrical specifications for the Comparator are given in Table 11.1.
The Comparator response time may be configured in software using the CPnMD1-0 bits in register CPT-
nMD (see SFR Definition 11.2). Selecting a longer response time reduces the amount of power consumed
by the comparator. See Table 11.1 for complete timing and current consumption specifications.
Comparator Pin Assignments
CP0 +
CP1 +
CP2 +
CP0 -
CP1 -
CP2 -
Figure 11.1. Comparator Functional Block Diagram
P2.6
P2.7
P2.2
P2.3
P2.4
P2.5
207). The Comparator may also be used as a reset source (see
CPnHYP1
CPnHYP0
CPnHYN1
CPnHYN0
CPnOUT
CPnRIF
CPnFIF
CPnEN
for details on configuring the Comparator output via the digital Crossbar.
CPn +
CPn -
CPnRIEN
CPnFIEN
CPnMD1
CPnMD0
167).
Section “17.1.5. Configuring Port 1, 2, and 3 Pins as Ana-
+
-
Rev. 1.5
GND
VDD
C8051F040/1/2/3/4/5/6/7
Decision
Reset
Tree
Section “17.1.1. Crossbar Pin Assignment
(SYNCHRONIZER)
D
SET
CLR
Q
Q
DD
D
SET
CLR
) + 0.25 V without damage or upset.
Q
Q
Interrupt Flag
Rising-edge
CPn
Crossbar
Interrupt
Logic
Interrupt Flag
Falling-edge
Interrupt
CPn
CPn
CPn
Section
121