EZ80L92AZ020SC00TR Zilog, EZ80L92AZ020SC00TR Datasheet - Page 94
EZ80L92AZ020SC00TR
Manufacturer Part Number
EZ80L92AZ020SC00TR
Description
IC EZ80 MPU 100LQFP
Manufacturer
Zilog
Datasheet
1.EZ80L92AZ020SG.pdf
(231 pages)
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
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Real Time Clock
PS013014-0107
System Clock
The real time clock (RTC) keeps time by maintaining a count of seconds, minutes, hours,
day-of-the-week, day-of-the-month, year, and century. The current time is kept in 24-hour
format. The format for all count and alarm registers is selectable between binary and
binary-coded-decimal (BCD). The calendar operation maintains the correct day of the
month and automatically compensates for leap year. A simplified block diagram of the
RTC and the associated on-chip, low-power, 32 kHz oscillator is illustrated in
Connections to an external battery supply and 32 kHz crystal network are also demon-
strated in
Figure 22. Real Time Clock and 32 kHz Oscillator Block Diagram
IRQ
ADDR[15:0]
DATA[7:0]
Real-Time Clock
Figure
V
RTC Clock
DD
22.
(RTC_CTRL[4])
CLK_SEL
Enable
V
DD
Low-Power
32 KHz Oscillator
RTC_X
RTC_X
RTC_V
DD
OUT
IN
32 KHz
Crystal
R1
Product Specification
Battery
Real Time Clock
Figure
C
C
22.
88
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