28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology
The RC oscillator frequency is a function of the supply voltage, the resistor (REXT) and capacitor (CEXT) values and the operating temperature. Other factors affecting the oscillator frequency are:
• threshold voltage variation
• component tolerances
• packaging variations in capacitance
The user also needs to take into account variation due to tolerance of external RC components used.A single comparator is shown in Figure 12-1 along with the relationship between the analog input levels and the digital output. When the analog voltage at VIN+ is less than the analog voltage at VIN-, the output of the comparator is a digital low level. When the analog voltage at VIN+ is greater than the analog voltage at VIN-, the output of the comparator is a digital high level.
COMPARATOR MODULE
Comparators are used to interface analog circuits to a digital circuit by comparing two analog voltages and providing a digital indication of their relative magnitudes. Comparators are very useful mixed signal building blocks because they provide analog functionality independent of program execution. The analog comparator module includes the following features:
• Independent comparator control
• Programmable input selection
• Comparator output is available internally/externally
• Programmable output polarity
• Interrupt-on-change
• Wake-up from Sleep
• Programmable Speed/Power optimization
• PWM shutdown
• Programmable and fixed voltage reference
ANALOG INPUT MODEL
STOCK LIST
| BD82QM67/SLJ4M | 450 | INTEL | 12+ | BGA |
| LTC2602IMS8#PBF | 7013 | LINEAR | 14+ | MSOP |
| MAX232DWR | 8050 | TI | 16+ | SOP |
| MAX3222CWN | 10500 | MAXIM | 16+ | SOP |
| MMBZ5231B | 20000 | ON | 16+ | SOT-23 |
| MX25L6406EMI-12G | 7800 | MXIC | 16+ | SOP |
| ZXTC2045E6TA | 30000 | DIODES | 14+ | SOT23-6 |
| MSM82C54-2RS | 6589 | OKI | 16+ | DIP |
| NC7S00M5X | 38000 | FAIRCHILD | 16+ | SOT23-5 |
| LMH6611MKX | 842 | TI | 15+ | SOT-23-6 |
| LMC6772AIMM | 4692 | NSC | 15+ | MSOP-8 |
| PIC16F76-I/SO | 5000 | MICROCHIP | 14+ | SOP-28 |
| MC34167TG | 3484 | ON | 14+ | TO-220 |
| MJ15024G | 2120 | ON | 15+ | TO-3 |
| MSP430F1101AIDWR | 6610 | TI | 14+ | SOP |
| LT1460EIS8-5#PBF | 9818 | LINEAR | 16+ | SOP-8 |
| MCT62SD | 5806 | FAIRCHILD | 10+ | SOP |
| CMX638L4 | 513 | CML | 14+ | LQFP48 |
| LMZ23605TZ | 1973 | NSC | 14+ | TO-PMOD-7 |
| PD10M440H | 196 | NIEC | 16+ | MODULE |
| PE4259-63 | 10000 | PEREGRINE | 16+ | SOT |
| 30421* | 427 | BOSCH | 13+ | QFP-64 |
| PIC24FJ128GA010-I/PT | 4183 | MICROCHIP | 15+ | TQFP |
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PIC16F1936-I/SO 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology microchip Images
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