Z51F0410 Datasheet, PDF (27/184 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F0410
Product Specification
1.10.2 External Interrupt I/O Port
LevelShift ( 1.8V to ExtVDD)
LevelShift (ExtVDD to 1.8V)
PULL-UP
REGISTER
OPEN DRAIN
REGISTER
DATA
REGISTER
SUB-FUNC DATA OUTPUT
SUB-FUNC ENABLE
SUB-FUNC DIRECTION
DIRECTION
REGISTER
0
MUX
1
0
MUX
1
VDD
VDD
VDD
PAD
0
EXTERNAL
MUX
INTERRUPT
1
INTERRUPT
ENABLE
VDD
QD
CP
r
POLARITY
REG
1
PORTx INPUT
MUX
0
EDGE
REG
FLAG
CLEAR
PADx Data INPUT
SUB-FUNC
DATA INPUT
0
MUX
1
QD
CP
r
DEBOUNCE
CLK
DEBOUNCE
ENABLE
ANALOG CHANNEL
ENABLE
ANALOG INPUT
R(200Ω)
R(200Ω)
CMOS or
SchmittLevel
Input
Figure 1.17 External Interrupt I/O Port
PS029502-0212
PRELIMINARY
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