Z51F3220FNX Datasheet, PDF (86/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
10.2 External Interrupt
The external interrupt on INT0, INT1, INT5, INT6 and INT11 pins receive various interrupt request depending
on the external interrupt polarity 0 high/low register (EIPOL0H/L) and external interrupt polarity 1 register
(EIPOL1) as shown in Figure 10.1. Also each external interrupt source has enable/disable bits. The External
interrupt flag 0 register (EIFLAG0) and external interrupt flag 1 register 1 (EIFLAG1) provides the status of
external interrupts.
EINT8 Pin
EINT10 Pin
EINT11 Pin
EINT12 Pin
2
2
2
2
EIPOL1
FLAG8
FLAG10
FLAG11
FLAG12
INT6 Interrupt
INT0 Interrupt
INT1 Interrupt
INT11 Interrupt
EINT0 Pin
EINT1 Pin
EINT2 Pin
EINT3 Pin
EINT4 Pin
EINT5 Pin
EINT6 Pin
EINT7 Pin
2
2
2
2
2
2
FLAG0
FLAG1
FLAG2
FLAG3
FLAG4
FLAG5
FLAG6
FLAG7
INT5 Interrupt
EIPOL0H, EIPOL0L
Figure 10.1 External Interrupt Description
PS029902-0212
PRELIMINARY
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