EZ80L92AZ050SG Zilog, EZ80L92AZ050SG Datasheet - Page 79

• Manufacturer Part Number: EZ80L92AZ050SG
• Description: IC WEBSERVER 50MHZ 100LQFP
• Manufacturer: Zilog

Specifications of EZ80L92AZ050SG

• 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: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: eZ80L920210ZCO
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-3878; EZ80L92AZ050SG

Watchdog Timer
PS013014-0107
The Watchdog Timer (WDT) helps protect against corrupt or unreliable software, power
faults, and other system-level problems which may place the eZ80 CPU into unsuitable
operating states. The eZ80L92 MCU WDT features:
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Figure 17
System Clock
RTC Clock
Four programmable time-out periods: 2
Two selectable WDT clock sources: the system clock or the real time clock source
(on-chip 32 kHz crystal oscillator or 50/60 Hz signal)
A selectable time-out response: a time-out can be configured to generate either a
RESET or a non-maskable interrupt (NMI)
A WDT time-out RESET indicator flag
illustrates the block diagram for the Watchdog Timer.
WDT_CLK
Figure 17. Watchdog Timer Block Diagram
Time-Out Compare Logic
{WDT_PERIOD}
Upcounter
28-Bit
18
, 2
22
, 2
25
, and 2
27
RESET
NMI to eZ80 CPU
WDT Control Logic
Control Register/
Reset Register
clock cycles
Product Specification
Data[7:0]
eZ80L92 MCU
Watchdog Timer
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