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MC44011FN Datasheet(PDF) 9 Page - Motorola, Inc |
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MC44011FN Datasheet(HTML) 9 Page - Motorola, Inc |
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9 / 52 page  MC44011 9 MOTOROLA ANALOG IC DEVICE DATA PIN FUNCTION DESCRIPTION FB FN QFP PLCC Representative Circuitry Description Pin Representative Circuitry (Pin numbers refer to PLCC package) Description (Pin numbers refer to PLCC package) 39, 41 1, 3 0.47 Video Input 470 47 pF 10 M 20 k Video Input 1 & 2 – Video 1 (Pin 1) and Video 2 (Pin 3) are composite video inputs. Either can be NTSC or PAL. Input impedance is high, termination must be external. Also used for the luma and chroma components of an S–VHS signal. Selection of these inputs is done by software. External components protect against ESD and noise. 40 2 2 0.1 ACC Filter – A 0.1 µF capacitor at this pin filters the feedback loop of the chroma automatic gain control amplifier. Input chroma burst amplitude can be between 30 and 600 mVpp. 42 4 5.0 10 k Vertical Sync 4 Vertical Sync Output – An open collector output requiring an external pull–up. Output is an active low pulse, 500 µs wide, occurring each field. Timing of this pulse depends on Bit $78–7. 43 5 100 k From MCU 5 SCL – Clock for the I2C bus interface. See Appendix C for specifications. Maximum frequency is 100 kHz. 44 6 180 k To/ From MCU 6 SDL – Bidirectional data line for the I2C bus interface. As an output, it is an open collector. (Write Address $8A, Read Address $8B) 1 7 100 k 12 k Field ID 7 Field ID – TTL level output indicating Field 1 or Field 2. Polarity depends on state of Bit $78–7 (Vertical Sync Delay). See Table 11 and Figure 33 and 34. 2 8 (Same as Pin 7) Burst Gate – TTL level output used for external clamps, as well as internally. Pulse is active high, ≈ 3.5 µs wide, with the rising edge ≈ 3.0 µs after center of selected incoming sync pulse. 3 9 2.2 µF / / 0.01 110 k 5.0 20 k 8.0 k 9 Reference Current Input – Current supplied to this pin, typically 32 µA from 5.0 V through a 110 kΩ resistor, is the reference current for the calibration circuit. Noise filtering should be done at the pin. Voltage at this pin is typically 1.2 V. 4 10 (See power distribution diagram at the end of this section.) Quiet Ground – Ground for the horizontal PLL filter (PLL #1) at Pin 11. |
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