EZ80190AZ050EC Zilog, EZ80190AZ050EC Datasheet - Page 56
EZ80190AZ050EC
Manufacturer Part Number
EZ80190AZ050EC
Description
IC WEBSERVER 50MHZ XTEMP 100lQFP
Manufacturer
Zilog
Datasheet
1.EZ80190AZ050SG.pdf
(221 pages)
Specifications of EZ80190AZ050EC
Processor Type
eZ80
Features
High Speed, Single-Cycle Instruction-Fetch
Speed
50MHz
Voltage
3.3V
Mounting Type
Surface Mount
Package / Case
100-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
269-3123
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GPIO Interrupts
PS006614-1208
System
DATA
Clock
Bus
Register (Output)
Level-Triggered Interrupts
GPIO Data
D
Q
Each port pin can be used as an interrupt source. Interrupts can be either level- or edge-
triggered.
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 clock periods to
initiate an interrupt. The interrupt request remains active as long as this condition is main-
tained at the external source.
For example, if PA3 is programmed for low-level interrupt and the pin is forced Low for 2
clock cycles, an interrupt request signal is generated from that port pin and sent to the
CPU. The interrupt request signal remains active until the external device driving PA3
Mode 1
Mode 4
Mode 1
Mode 3
System
Clock
Register (Input)
Figure 7. GPIO Port Pin Block Diagram
GPIO Data
Q
D
Q
D
GND
VDD
General-Purpose Input/Output
Product Specification
Port
Pin
eZ80190
46
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