st72324bk STMicroelectronics, st72324bk Datasheet - Page 51

• Manufacturer Part Number: st72324bk
• Description: 3 V/5 V Range 8-bit Mcu With 4/8 Kbyte Rom, 10-bit Adc, Four Timers And Spi
• Manufacturer: STMicroelectronics

ST72323 ST72323L
Figure 25. I/O port general block diagram
Table 17.
1. Legend:NI - not implemented
2. The diode to V
Input
Output
Off - implemented not activated
On - implemented and activated
V
SS
REGISTER
ACCESS
INTERRUPT
SOURCE (ei
EXTERNAL
is implemented to protect the device against positive stress.
Floating with/without Interrupt
Pull-up with/without Interrupt
Push-pull
Open Drain (logic level)
True Open Drain
Configuration mode
DDR SEL
OR SEL
DR SEL
I/O port mode options
DDR
x
DR
OR
DD
)
is not implemented in the true open drain pads. A local protection between the pad and
ALTERNATE
OUTPUT
ALTERNATE
ENABLE
If implemented
1
0
(1)
1
0
Pull-up
Off
On
Off
NI
N-BUFFER
PULL-UP
CONDITION
P-buffer
Off
On
Off
NI
SCHMITT
TRIGGER
CMOS
V
DD
to V
NI
P-BUFFER
(see table below)
On
V
(2)
DD
DD
DIODES
(see table below)
PULL-UP
(see table below)
Diodes
ALTERNATE
ANALOG
INPUT
INPUT
PAD
I/O ports
to V
On
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