Z51F0410 Datasheet, PDF (26/184 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F0410
Product Specification
1.10 Port Structure
1.10.1 General Purpose 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
1
PORTx INPUT
MUX
0
PADx Data INPUT
SUB-FUNC
DATA INPUT
ANALOG CHANNEL
ENABLE
ANALOG INPUT
ANALOG INPUT
(without Resistor)
0
MUX
1
0
MUX
1
VDD
VDD
VDD
PAD
R(400Ω)
0
MUX
1
QD
CP
r
DEBOUNCE
CLK
DEBOUNCE
ENABLE
CMOS or
SchmittLevel
Input
Figure 1.16 General Purpose I/O Port
PS029502-0212
PRELIMINARY
23