MC68HC708MP16 Datasheet, PDF (376/398 Pages) Freescale Semiconductor, Inc – Microcontrollers

Electrical Specifications
Table 21-10. CGM Acquisition/Lock Time Specifications
Description
Filter Capacitor Multiply Factor
Acquisition Mode Time Factor
Tracking Mode Time Factor
Manual Mode Time to Stable
Manual Stable to Lock Time
Manual Acquisition Time
Tracking Mode Entry Frequency
Tolerance
Acquisition Mode Entry Frequency
Tolerance
LOCK Entry Frequency Tolerance
LOCK Exit Frequency Tolerance
Reference Cycles per Acquisition
Mode Measurement
Reference Cycles per Tracking
Mode Measurement
Automatic Mode Time to Stable
Automatic Stable to Lock Time
Automatic Lock Time
PLL Jitter (Deviation of Average
Bus Frequency Over 2 ms)
Symbol
Min
Typ
Max
C_FACT
K_ACQ
K_TRK
t_ACQ
t_AL
t_LOCK
—
0.0154
—
—
0.1135
—
—
0.0174
—
—
(8*V_DDA)/
(f_{X CLK}*K_ACQ)
—
—
(4*V_DDA)/
(f_{X CLK}*K_TRK)
—
—
t_ACQ+t_AL
—
∆_TRK
0
—
± 3.6%
∆_ACQ
∆_LOCK
∆_UNL
n_ACQ
±6.3%
0
±0.9%
—
—
± 7.2%
—
± 0.9%
—
± 1.8%
32
—
n_TRK
t_ACQ
t_AL
t_LOCK
f_J
—
128
—
n_ACQ/f_XCLK
n_TRK/f_XCLK
—
0
(8*V_DDA)/
(f_{X CLK}*K_ACQ)
(4*V_DDA)/
(f_{X CLK}*K_TRK)
t_ACQ+t_AL
—
—
—
—
± (f_CRYS)
*(0.025%)
*(N/4)
Notes
F/sV
V
V
If C_F chosen
correctly.
If C_F chosen
correctly.
If C_F chosen
correctly.
If C_F chosen
correctly.
N = VCO freq.
mult. (GBNT)
Technical Data
376
Electrical Specifications
MC68HC708MP16 — Rev. 3.1
Freescale Semiconductor