MC68HC12 MOTOROLA [Motorola, Inc], MC68HC12 Datasheet - Page 222

• Manufacturer Part Number: MC68HC12
• Description: The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit
• Manufacturer: MOTOROLA [Motorola, Inc]

Oscillator
Technical Data
222
Table 13-2. MC68HC912Dx128P EXTAL–VSS, XTAL–VSS Capacitor Values vs. Maximum
(VDDPLL=VDD)
Capacitance
Capacitance
Capacitance
Capacitance
(VDDPLL=0)
(VDDPLL=0)
(VDDPLL=0)
C
C
C
EXTAL-VSS
EXTAL-VSS
EXTAL-VSS
Shunt
Shunt
Shunt
Shunt
(pF)
(pF)
(pF)
(pF)
Maximum ESR vs. EXTAL–VSS or XTAL–VSS capacitor value, 1MHz resonators
Maximum ESR vs. EXTAL–VSS or XTAL–VSS capacitor value, 2MHz resonators
Maximum ESR vs. EXTAL–VSS or XTAL–VSS capacitor value, 4MHz resonators
(pF)
(pF)
(pF)
ESR, Shunt Capacitance, and VDDPLL setting
10
10
10
10
3
5
7
3
5
7
3
5
7
3
5
7
47pF
47pF
47pF
4400
3800
3300
2700
1100
975
850
725
270
240
210
180
250
230
200
170
39pF
39pF
39pF
5500
4650
3950
2900
1425
1225
1050
875
350
310
270
220
330
290
250
210
Oscillator
6700
5400
4150
2300
33pF
1750
1500
1275
1025
33pF
33pF
440
380
320
260
410
350
300
250
27pF
27pF
27pF
8100
5350
3100
1700
2200
1825
1525
1175
560
470
400
320
520
440
370
300
8500
4000
2300
1200
22pF
2700
2150
1750
1325
22pF
22pF
700
570
480
370
660
540
450
350
MC68HC912DT128A — Rev 4.0
6350
2900
1650
18pF
3200
2475
1925
18pF
18pF
1050
850
850
680
550
420
800
640
520
400
3700
1650
13pF
3975
2350
1375
13pF
1100
1040
13pF
950
500
725
850
670
490
800
630
450
MOTOROLA
2250
1000
10pF
3925
1825
1050
10pF
1310
1230
10pF
550
300
550
970
740
520
910
700
500