EZ80L92AZ050EG Zilog, EZ80L92AZ050EG Datasheet - Page 94

• Manufacturer Part Number: EZ80L92AZ050EG
• Description: IC WEBSERVER 50MHZ 100LQFP
• Manufacturer: Zilog

Specifications of EZ80L92AZ050EG

• Processor Type: eZ80
• Features: High Speed, Single-Cycle Instruction-Fetch
• Speed: 50MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Processor Series: EZ80L92x
• Core: eZ80
• Data Bus Width: 8 bit
• Program Memory Size: 64 KB
• Interface Type: I2C, SPI, UART
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 6
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: eZ80L920210ZCO
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-3877; EZ80L92AZ050EG

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