EZ80F920120MOD Zilog, EZ80F920120MOD Datasheet - Page 236
EZ80F920120MOD
Manufacturer Part Number
EZ80F920120MOD
Description
MODULE EZ80F92 512K 20MHZ
Manufacturer
Zilog
Datasheets
1.EZ80F920120MOD.pdf
(269 pages)
2.EZ80F920120MOD.pdf
(4 pages)
3.EZ80F920120MOD.pdf
(2 pages)
Specifications of EZ80F920120MOD
Module/board Type
Development Module
Processor Series
EZ80F92x
Core
eZ80
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
1 MB
Interface Type
Cable
Maximum Clock Frequency
20 MHz
Operating Supply Voltage
0 V to 3.3 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Package / Case
LQFP
Development Tools By Supplier
eZ80F920200ZCOG
Minimum Operating Temperature
0 C
For Use With/related Products
eZ80F92
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
269-3157
EZ80F920120MOD
EZ80F920120MOD
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PS015308-0404
32 KHz Real-Time Clock Crystal Oscillator Operation
Table 143. Recommended Crystal Oscillator Specifications (20 MHz Operation)
Figure 51 illustrates a recommended configuration for connecting the Real-Time Clock
oscillator with an external 32 KHz, fundamental-mode, parallel-resonant crystal. The rec-
ommended crystal specifications are provided in Recommended Crystal Oscillator Speci-
fications (32 KHz Operation). A printed circuit board layout should add no more than 4 pF
of stray capacitance to either the RTC_X
occur, reduce the values of capacitors C
An on-chip MOS resistor sets the crystal drive current limit. This configuration does not
require an external bias resistor across the crystal. An on-chip MOS resistor provides the
biasing.
Figure 51.Recommended Crystal Oscillator Configuration (32KHz operation)
Parameter
Frequency
Resonance
Mode
Series Resistance (R
Load Capacitance (C
Shunt Capacitance (C
Drive Level
C = 18 pF
2
RTC_X
IN
S
L
0
)
)
)
(Fundamental Mode)
On-Chip Oscillator
32 MHz Crystal
P R E L I M I N A R Y
Value
20
Parallel
Fundamental
25
20
7
1
1
IN
and C
or RTC_X
2
to decrease loading.
Units
MHz
Ω
pF
pF
mΩ
RTC_X
R = 220 Ω
OUT
1
C = 18 pF
2
OUT
pins. If oscillation does not
Comments
Maximum
Maximum
Maximum
Maximum
Product Specification
eZ80F92/eZ80F93
On-Chip Oscillators
224
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