EZ80L92AZ020SG Zilog, EZ80L92AZ020SG Datasheet - Page 47
EZ80L92AZ020SG
Manufacturer Part Number
EZ80L92AZ020SG
Description
IC WEBSERVER 20MHZ 100LQFP
Manufacturer
Zilog
Datasheet
1.EZ80L92AZ020SG.pdf
(231 pages)
Specifications of EZ80L92AZ020SG
Processor Type
eZ80
Features
High Speed, Single-Cycle Instruction-Fetch
Speed
20MHz
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
20 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
269-3876
EZ80L92AZ020SG
EZ80L92AZ020SG
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EZ80L92AZ020SG
Manufacturer:
SYNERGY
Quantity:
5 000
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PS013014-0107
GPIO Interrupts
Each port pin can be used as an interrupt source. Interrupts are either level-triggered or
edge-triggered.
Level-Triggered Interrupts
When the port is configured for level-triggered interrupts, the corresponding port pin is
tristated. An interrupt request is generated when the level at the pin is the same as the level
stored in the Port x Data register. The port pin value is sampled by the system clock. The
input pin must be held at the selected interrupt level for a minimum of 2 consecutive clock
cycles to initiate an interrupt. The interrupt request remains active as long as this condition
is maintained at the external source.
For example, if PD3 is programmed for low-level interrupt and the pin is forced Low for
2 consecutive clock cycles, an interrupt request signal is generated from that port pin and
sent to the eZ80 CPU. The interrupt request signal remains active until the external device
driving PD3 forces the pin High.
Edge-Triggered Interrupts
When the port is configured for edge-triggered interrupts, the corresponding port pin is
tristated. If the pin receives the correct edge from an external device, the port pin generates
an interrupt request signal to the eZ80 CPU. Any time a port pin is configured for
System Clock
Data Bus
GPIO Register
Data (Output)
D
System Clock
Q
Figure 3. GPIO Port Pin Block Diagram
Mode 1
Mode 4
Mode 1
Mode 3
GPIO Register
Data (Input)
Q
D
Q
General-Purpose Input/Output
Product Specification
D
GND
V
DD
eZ80L92 MCU
Port
Pin
41
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