Moteur de recherche de fiches techniques de composants électroniques |
|
TC820CPL Fiches technique(PDF) 7 Page - Microchip Technology |
|
TC820CPL Fiches technique(HTML) 7 Page - Microchip Technology |
7 / 28 page © 2002 Microchip Technology Inc. DS21476B-page 7 TC820 25 21 PKHOLD Peak hold input. When connected to VDD, the converter will only update the display if a new conversion value is greater than the preceding value. Thus, the peak reading will be stored and held indefinitely. When unconnected, or connected to DGND, the converter will operate normally. This pin has an internal 5 µA pull-down to DGND. — 22 UR Under range output. This output will be HIGH when the digital reading is 380 counts or less. — 23 OR Over range output. This output will be HIGH when the analog signal input is greater than full scale. The LCD will display "OL" when the input is over ranged. 26 24 VSS Negative supply connection. Connect to negative terminal of 9V battery. 27 25 COM Analog circuit ground reference point. Nominally 3.3V below VDD. 28 26 CREF+ Positive connection for reference capacitor. 29 27 CREF- Negative connection for reference capacitor. 30 28 VREF+ High differential reference input connection. 31 29 VREF- Low differential reference input connection. 32 30 VIN- Low analog input signal connection. 33 31 VIN+ High analog input signal connection. 34 32 VBUFF Buffer output. Connect to integration resistor. 35 33 CAZ Auto-zero capacitor connection. 36 34 VINT Integrator output. Connect to integration capacitor. —35 EOC/ HOLD Bi-directional pin. Pulses low (i.e., from V DD to DGND) at the end of each conversion. If connected to VDD, conversions will continue, but the display is not updated. 37 36 OSC1 Crystal oscillator (input) connection. 38 37 OSC2 Crystal oscillator (output) connection. 39 38 OSC3 RC oscillator connection. 40 39 VDD LCD segment drive for "a," "g," and "d" segments of MSD. TABLE 2-1: PIN FUNCTION TABLE (CONTINUED) Pin Number (40-PDIP) Pin Number (44-PQFP) Symbol Description |
Numéro de pièce similaire - TC820CPL |
|
Description similaire - TC820CPL |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |