MC145170 Freescale Semiconductor, Inc, MC145170 Datasheet
MC145170
Available stocks
Related parts for MC145170
MC145170 Summary of contents
Page 1
... PLL Frequency Synthesizer with Serial Interface 1 Introduction The new MC145170-2 is pin-for-pin compatible with the MC145170-1. A comparison of the two parts is shown in Table 1 on page 2. The MC145170-2 is recommended for new designs and has a more robust power-on reset (POR) circuit that is more responsive to momentary power supply interruptions ...
Page 2
... N Counter Division Range 65,535 • Programs through Standard Serial Peripheral Interface (SPI) • See Application Notes AN1207/D and AN1671/D • Contact Freescale for MC145170 control software. Table 1. Comparision of the PLL Frequency Synthesizers Minimum Supply Voltage Maximum Input Current, f Dynamic Characteristics, f Power-On Reset Circuit ...
Page 3
... This device contains 4,800 active transistors. Figure 1. Block Diagram Symbol out out Pins stg T L MC145170-2 Technical Data, Rev. 5 Electrical Characteristics 9 f Control Lock Detector and Control LD Phase/Frequency Detector A 13 and Control PD out 14 f Phase/Frequency Detector and Control ...
Page 4
... R V out Connect; , φ , φ OSC , Connect; out V R out D , ENB, CLK = pin is used, the pin must be driven rail-to-rail. In this case, OSC in MC145170-2 Technical Data, Rev -40 to 85° Guaranteed DD Symbol Unit V Limit V - 2 2.7 0. ...
Page 5
... PZH TLH THL out = -40 to 85°C, Input Symbol vs CLK rec t w( MC145170-2 Technical Data, Rev. 5 Electrical Characteristics Figure V Guaranteed DD No. V Limit 2 2 3.0 4 4 2.7 150 4 2.7 300 4.5 200 5.5 200 ...
Page 6
... D out 50% D out THL 50% ENB 50% CLK V First CLK SS Device Under CL* Test *Includes all probe and fixture capacitance. MC145170-2 Technical Data, Rev PZL t High Impedance PLZ 10 PZH PHZ V 90% SS High Impedance Figure 3. t w(H) t ...
Page 7
... 13, TLH t THL C in 100 pF Sine Wave f Generator in V MC145170 Ω *Characteristic impedance Figure 8. Test Circuit, f MC145170-2 Technical Data, Rev. 5 Electrical Characteristics = -40 to 85°C) Guaranteed Range V DD No. V Min Max 8 2.7 5.0 80 3.0 5.0 100 4.5 25 185 5.5 45 185 9 2.7 1.0* 22 3.0 1. ...
Page 8
... Generator 5.0 MΩ OSC 50 Ω Figure 9. Test Circuit, OSC Circuitry Externally Driven [Note] Use the circuit of when the MC145170-2 has power applied with no external signal applied (Self-oscillation is not harmful to the MC145170-2 and does not in damage the IC.) OSC in C1 MC145170-2 REF ...
Page 9
... N Register R Register None See Figures while high-to-low transitions shift bits from in Table 7 to 34. MC145170-2 Technical Data, Rev. 5 Pin Connections of the driving device, maximum OL Bit Nomenclature (Reset) C7, C6, C5 N15, N14, N13 R14, R13, R12 and Figures 15, 16, 17, and 18). For ...
Page 10
... Schmitt-triggered input buffer. Slow CLK rise and fall DD for more information. in NOTE forced to the high-impedance state, and the port is out NOTE , thereby minimizing the chance of DD MC145170-2 Technical Data, Rev. 5 pin during power DD DD Figure 15 Table 7. for more information. in Freescale Semiconductor ...
Page 11
... R counter to decrement by one. to the OSC out in in can be enabled or disabled via the C register R Figure MC145170-2 Technical Data, Rev. 5 Pin Connections Figure 11. Figure 9 or alternate circuit Table 6, the Loop then dc coupling can be DD ...
Page 12
... Loop Specifications. For small divide ratios, the maximum to V levels listed 7), dc coupling is a requirement. The N counter is a static counter pin. See Figure 25. in Figure Figure 16) Leading f : negative pulses from high impedance V R MC145170-2 Technical Data, Rev. 5 signal is in Table 3, the Electrical Characteristics 19. Freescale Semiconductor ...
Page 13
... φ = essentially high, φ Lagging φ and φ remain essentially high, except for a small minimum time V R MC145170-2 Technical Data, Rev. 5 Pin Connections can be forced to the out = essentially high R = negative pulses R = essentially high V = negative pulses V and f are out of phase or different ...
Page 14
... should be bypassed to V using low-inductance capacitor(s) mounted Zeroes One Figure 15. Reset Sequence MC145170-2 Technical Data, Rev. 5 pin is tied to a ground plane Zero Don't Cares Freescale Semiconductor ...
Page 15
... OSC OSC OSC output when set high. When cleared low, the f V output when set high. When cleared low, the f R MC145170-2 Technical Data, Rev. 5 Pin Connections LSB depicted in Figure 19. Also see the V forced to the out characteristics as shown below ...
Page 16
... Pin Connections Figure 17. R Register Access and Formats (Either Clock Cycles Can Be Used) 16 MC145170-2 Technical Data, Rev. 5 Freescale Semiconductor ...
Page 17
... A N Counter = ÷ Counter = ÷ Counter = ÷65,534 Counter = ÷65,535 Hexadecimal Value MC145170-2 Technical Data, Rev. 5 Pin Connections * LSB Decimal Equivalent High Impedance V ...
Page 18
... L Table 6, Loop Specifications. Larger out = --------------------------- - + stray out 21) 21) 21) Figure 21 MC145170-2 Technical Data, Rev and 10). values are possible L ) presented across the crystal L × -------------------- - and OSC pins to minimize in out and C . For this approach, the ...
Page 19
... Figure 20. Pierce Crystal Oscillator Circuit C a OSC stray Figure 22. Equivalent Crystal Networks MC145170-2 Technical Data, Rev. 5 Design Considerations , in Figure 22. The maximum drive e Figure 20 limits the drive level. The use Frequency Synthesizer out OSC out C out stray CS ...
Page 20
... ω VCO + ζ = MC33077 or equivalent R 2 (Note the frequency at the phase detector input. Larger ω R MC145170-2 Technical Data, Rev φ K VCO = ------------------------- Nω n ---------------------------- - 2K K VCO φ ------------------------- - φ K VCO = ----------------------------------- - ( ) ⎛ ...
Page 21
... Detector Optional (Note 4) (Note 5) R pin to V (GND) with one or more low-inductance Typically wher the divide value R Figure 24. Example Application MC145170-2 Technical Data, Rev. 5 Design Considerations Optional φ V Loop Error Signals 14 φ (Note ...
Page 22
... At Points C and D, the signals are cleaned up, have sharp edge rates, and rail-to-rail signal swings. With signals as described at Points C and D, the MC145170-2 is guaranteed to operate down to a frequency as low as dc. Figure 25. Low Frequency Operation Using DC Coupling ...
Page 23
... Figure 26. Input Impedance at fin - Series Format (R + jX) CMOS MCU NOTES: 1. The 33 kΩ resistor is needed to prevent the D 2. See related Figures 28, 29, and 30. Figure 27. Cascading Two MC145170-2 Devices Freescale Semiconductor Frequency (MHz) Resistance (Ω) Reactance (Ω) Capacitance (pF) 5 2390 100 39.2 150 25 ...
Page 24
... Design Considerations 24 MC145170-2 Technical Data, Rev. 5 Freescale Semiconductor ...
Page 25
... Freescale Semiconductor MC145170-2 Technical Data, Rev. 5 Design Considerations 25 ...
Page 26
... See related Figures 32, 33, and 34. Figure 31. Cascading Two Different Device Types Device #1 MC145170 CLK ENB in out Optional pin from floating. (The D in MC145170-2 Technical Data, Rev Device #2 Note 2 Output CLK ENB ...
Page 27
... Freescale Semiconductor MC145170-2 Technical Data, Rev. 5 Design Considerations 27 ...
Page 28
... Design Considerations 28 MC145170-2 Technical Data, Rev. 5 Freescale Semiconductor ...
Page 29
... T 0.25 0.19 1.25 7° 0.40 0° SECTION A-A (Case 751B-05, Issue K) MC145170-2 Technical Data, Rev. 5 NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. INCHES MILLIMETERS ...
Page 30
... (Case 948C-03, Issue B) MC145170-2 Technical Data, Rev. 5 NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. ...
Page 31
... Freescale Semiconductor NOTES MC145170-2 Technical Data, Rev ...
Page 32
... Freescale Semiconductor Literature Distribution Center P.O. Box 5405 Denver, Colorado 80217 1-800-441-2447 or 303-675-2140 Fax: 303-675-2150 LDCForFreescaleSemiconductor@hibbertgroup.com MC145170-2/D Rev. 5 1/2005 RoHS-compliant and/or Pb- free versions of Freescale products have the functionality and electrical characteristics of their non-RoHS-compliant and/or non-Pb- free counterparts. For further information, see http://www.freescale.com or contact your Freescale sales representative ...