Datasheet

Oscillator
Technical Data MC68HC912D60A — Rev. 3.1
204 Oscillator Freescale Semiconductor
Table 12-2. MC68HC912D60P EXTAL–VSS, XTAL–VSS Capacitor Values vs. Maximum
ESR, Shunt Capacitance, and VDDPLL setting
Maximum ESR vs. EXTAL–VSS or XTAL–VSS capacitor value, 1MHz resonators
Shunt
Capacitance
(pF)
(VDDPLL=0)
3 4400 5500 6700 8100 8500 6350 3700 2250
5 3800 4650 5400 5350 4000 2900 1650 1000
7 3300 3950 4150 3100 2300 1650 950 550
10 2700 2900 2300 1700 1200 850 500 300
C
EXTAL-VSS
(pF)
47pF 39pF 33pF 27pF 22pF 18pF 13pF 10pF
Maximum ESR vs. EXTAL–VSS or XTAL–VSS capacitor value, 2MHz resonators
Shunt
Capacitance
(pF)
(VDDPLL=0)
3 1100 1425 1750 2200 2700 3200 3975 3925
5 975 1225 1500 1825 2150 2475 2350 1825
7 850 1050 1275 1525 1750 1925 1375 1050
10 725 875 1025 1175 1325 1050 725 550
C
EXTAL-VSS
(pF)
47pF 39pF 33pF 27pF 22pF 18pF 13pF 10pF
Maximum ESR vs. EXTAL–VSS or XTAL–VSS capacitor value, 4MHz resonators
Shunt
Capacitance
(pF)
(VDDPLL=VDD)
3 270 350 440 560 700 850 1100 1310
5 240 310 380 470 570 680 850 970
7 210 270 320 400 480 550 670 740
10 180 220 260 320 370 420 490 520
Shunt
Capacitance
(pF)
(VDDPLL=0)
3 250 330 410 520 660 800 1040 1230
5 230 290 350 440 540 640 800 910
7 200 250 300 370 450 520 630 700
10 170 210 250 300 350 400 450 500
C
EXTAL-VSS
(pF)
47pF 39pF 33pF 27pF 22pF 18pF 13pF 10pF