C8051F061 Silicon Laboratories Inc, C8051F061 Datasheet - Page 118
C8051F061
Manufacturer Part Number
C8051F061
Description
IC 8051 MCU 64K FLASH 64TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F06xr
Specifications of C8051F061
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
CAN, SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
24
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 2x16b, 8x10b; 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
-
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Comparator inputs can be externally driven from -0.25 V to (VDD) + 0.25 V without damage or upset. The
complete electrical specifications for the Comparator are given in Table 12.1.
The Comparator response time may be configured in software using the CPnMD1-0 bits in register CPT-
nMD (see Figure 12.4). Selecting a longer response time reduces the amount of power consumed by the
comparator. See Table 12.1 for complete timing and current consumption specifications.
The hysteresis of the Comparator is software-programmable via its Comparator Control register (CPT-
nCN). The user can program both the amount of hysteresis voltage (referred to the input voltage) and the
positive and negative-going symmetry of this hysteresis around the threshold voltage.
The Comparator hysteresis is programmed using Bits3-0 in the Comparator Control Register CPTnCN
(shown in Figure 12.3). The amount of negative hysteresis voltage is determined by the settings of the
CPnHYN bits. As shown in Figure 12.2, the negative hysteresis can be programmed to three different set-
tings, or negative hysteresis can be disabled. In a similar way, the amount of positive hysteresis is deter-
mined by the setting the CPnHYP bits.
118
(Programmed with CPnHYP Bits)
Positive Hysteresis Voltage
INPUTS
OUTPUT
VIN+
VIN-
CIRCUIT CONFIGURATION
Positive Hysteresis
CPn-
CPn+
VIN+
VIN-
Disabled
V
OL
Figure 12.2. Comparator Hysteresis Plot
V
OH
+
_
CPn
Positive Hysteresis
Maximum
OUT
Rev. 1.2
Negative Hysteresis
Disabled
Negative Hysteresis
(Programmed by CPnHYN Bits)
Maximum
Negative Hysteresis Voltage
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