C8051F021 Silicon Laboratories Inc, C8051F021 Datasheet - Page 96

• Manufacturer Part Number: C8051F021
• Description: IC 8051 MCU 64K FLASH 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F02xr

Specifications of C8051F021

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 32
• Program Memory Size: 64KB (64K 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 8x8b, 8x12b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

C8051F020/1/2/3
to logic 0. Comparator0 can also be programmed as a reset source; for details, see Section
Reset” on page 129.
The operation of Comparator1 is identical to that of Comparator0, though Comparator1 may not be configured as a
reset source. Comparator1 is controlled by the CPT1CN Register (Figure 11.4). The complete electrical specifications
for the Comparators are given in Table 11.1.
96
(Programmed with CP0HYP Bits)
Positive Hysteresis Voltage
INPUTS
OUTPUT
VIN+
VIN-
CIRCUIT CONFIGURATION
Positive Hysteresis
CP0-
VIN+
CP0+
VIN-
Disabled
V
OL
V
OH
+
_
Figure 11.2. Comparator Hysteresis Plot
CP0
Positive Hysteresis
Maximum
OUT
Rev. 1.4
Negative Hysteresis
Disabled
Negative Hysteresis
(Programmed by CP0HYN Bits)
Maximum
Negative Hysteresis Voltage
“13.6. Comparator0