MC68HC908GR16A Datasheet, PDF (254/270 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Electrical Specifications
20.9 Clock Generation Module (CGM) Characteristics
20.9.1 CGM Component Specifications
Characteristic
Crystal frequency
Crystal load capacitance⁽¹⁾
Crystal fixed capacitance
Crystal tuning capacitance
Feedback bias resistor
Series resistor
1. Consult crystal manufacturer’s data.
Symbol
f_XCLK
C_L
C₁
C₂
R_B
R_S
Min
Typ
Max
1
4
8
—
20
—
—
(2 x C_L) –5
—
—
(2 x C_L) –5
—
0.5
1
10
—
0
—
20.9.2 CGM Electrical Specifications
Characteristic
Symbol
Min
Typ
Max
Reference frequency (for PLL operation)
f_RCLK
1
4
8
Range nominal multiplier
Programmed VCO center-of-range frequency⁽¹⁾
f_NOM
f_VRS
—
71.42
—
—
(Lx2^E)f_NOM
—
1. See 4.3.6 Programming the PLL for detailed instruction on selecting appropriate values for L and E.
Unit
MHz
pF
pF
pF
MΩ
Ω
Unit
MHz
KHz
MHz
MC68HC908GR16A Data Sheet, Rev. 1.0
254
Freescale Semiconductor