MC68HC05J3 Datasheet, PDF (21/92 Pages) Motorola, Inc – High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit

MCU
OSC1
OSC2
R_P
2
L
C₁
R_S
OSC1
OSC2
C₀
C_OSC1
C_OSC2
(a) Crystal/ceramic resonator
oscillator connections
(b) Crystal equivalent circuit
MCU
OSOCS1C1
OOSSCC22
R
(c) RC oscillator connections
MCU
OSC1
OSC2
External
NC
clock
(d) External clock source connections
Crystal
2MHz 4MHz Unit
R_S(max) 400
75
Ω
C₀
5
7
pF
C₁
8
12
ƒF
C_OSC1 15 – 40 15 – 30 pF
C_OSC2 15 – 30 15 – 25 pF
R_P
10
10 MΩ
Q
30 000 40 000 —
Ceramic resonator
2 – 4MHz Unit
R_S(typ)
10
Ω
C₀
40
pF
C₁
4.3
pF
C_OSC1
30
pF
C_OSC2
30
pF
R_P
1 – 10 MΩ
Q
1250
—
(e) Crystal and ceramic resonator parameters
Figure 2-3 Oscillator connections
MC68HC05J3
MODES OF OPERATION AND PIN DESCRIPTIONS
TPG
MOTOROLA
2-5