EZ80F93AZ020EC00TR Zilog, EZ80F93AZ020EC00TR Datasheet - Page 228

• Manufacturer Part Number: EZ80F93AZ020EC00TR
• Description: IC ACCLAIM MCU 64KB 100LQFP
• Manufacturer: Zilog
• Series: eZ80® Acclaim!®r

Specifications of EZ80F93AZ020EC00TR

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 24
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Other names: EZ80F93AZ020EC00T

PS015313-0508
32 kHz Real-Time Clock Crystal Oscillator Operation
Table 142. Recommended Crystal Oscillator Specifications(20 MHz Operation)
Figure 52
oscillator with an external 32 kHz, fundamental-mode, parallel-resonant crystal. The rec-
ommended crystal specifications are listed in
board layout should add no more than 4 pF of stray capacitance to either the RTC_X
RTC_X
to decrease loading.
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.
Parameter
Frequency
Resonance
Mode
Series Resistance (R
Load Capacitance (C
Shunt Capacitance (C
Drive Level
Figure 52. Recommended Crystal Oscillator Configuration (32 kHz operation)
OUT
displays a recommended configuration for connecting the Real-Time Clock
pins. If oscillation does not occur, reduce the values of capacitors C
C = 18 pF
2
RTC_X
S
L
0
)
)
)
IN
Value
20
Parallel
Fundamental
25
20
7
1
(Fundamental Mode)
On-Chip Oscillator
32 MHz Crystal
Table 143
Units
MHz
Ω
pF
pF
mΩ
on page 221. A printed circuit
Comments
Maximum
Maximum
Maximum
Maximum
Product Specification
RTC_X
1
C = 18 pF
eZ80F92/eZ80F93
2
OUT
On-Chip Oscillators
1
and C
IN
or
2
220