EZ80L92AZ020SC00TR Zilog, EZ80L92AZ020SC00TR Datasheet - Page 205

• Manufacturer Part Number: EZ80L92AZ020SC00TR
• Description: IC EZ80 MPU 100LQFP
• Manufacturer: Zilog

Specifications of EZ80L92AZ020SC00TR

• Processor Type: eZ80
• Features: High Speed, Single-Cycle Instruction-Fetch
• Speed: 20MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: EZ80L92AZ020SC00T

PS013014-0107
32 kHz Real Time Clock Crystal Oscillator Operation
Table 116. Recommended Crystal Oscillator Specifications
Figure 45
oscillator with an external 32 kHz, fundamental-mode, parallel-resonant crystal.
lists the recommended crystal specifications. A printed circuit board layout must add no
more than 4 pF of stray capacitance to either the RTC_X
tion does not occur, reduce the values of capacitors C
An on-chip MOS resistor sets the crystal drive current limit. This configuration does not
requires an external bias resistor across the crystal. An on-chip MOS resistor provides the
biasing.
Figure 45. Recommended Crystal Oscillator Configuration (32 kHz operation)
C = 18 pF
Parameter
Frequency
Resonance
Mode
Series Resistance (R
Load Capacitance (C
Shunt Capacitance (C
Drive Level
2
RTC_X
IN
illustrates a recommended configuration for connecting the real time clock
(20 MHz Operation)
S
L
(Fundamental Mode)
0
)
)
On-Chip Oscillator
)
32 kHz Crystal
Fundamental
Parallel
Value
20
25
20
7
1
RTC_X
Units
R = 220 ‰
MHz
mW
pF
pF
1
1
Ω
C = 18 pF
and C
2
IN
OUT
or RTC_X
2
Comments
to decrease loading.
Maximum
Maximum
Maximum
Maximum
Product Specification
OUT
On-Chip Oscillators
eZ80L92 MCU
pins. If oscilla-
Table 117
199