NXP Semiconductors MC68CK16Z1, User Manual

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ELECTRICAL CHARACTERISTICS M68HC16 Z SERIES
A-8 USER’S MANUAL
Table A-9 20.97-MHz Clock Control Timing
(V
DD
and V
DDSYN
= 5.0 Vdc
±
5%, V
SS
= 0 Vdc, T
A
= T
L
to T
H
)
Num Characteristic Symbol Minimum Maximum Unit
1
PLL Reference Frequency Range
1
MC68HC16Z1
MC68HC16Z2
MC68HC16Z3
NOTES:
1. Refer to notes in Table A-10
f
ref
20
3.2
3.2
50
5.2
5.2
kHz
MHz
MHz
2
System Frequency
2
On-Chip PLL System Frequency
Slow On-Chip PLL System Frequency
Fast On-Chip PLL System Frequency
External Clock Operation
f
sys
dc
4 (f
ref
)
4 (f
ref
) /128
dc
20.97
20.97
20.97
20.97 MHz
3
PLL Lock Time
1, 7, 8, 9
Changing W or Y in SYNCR or exiting from
LPSTOP
3
Warm Start-Up
4
Cold Start-Up (fast reference option only)
5
t
lpll
— 20
50
75 ms
4 VCO Frequency
6
f
VCO
— 2 (f
sys
max) MHz
5
Limp Mode Clock Frequency
SYNCR X bit = 0
SYNCR X bit = 1 f
limp
—
— f
sys
max /2
f
sys
max
MHz
6
CLKOUT Jitter
1, 7, 8, 9, 10
Short term (5
µ
s interval)
Long term (500
µ
s interval)
J
clk
–1.0
–0.5 1.0
0.5
%
F
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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