ST7FLITE29 STMICROELECTRONICS [STMicroelectronics], ST7FLITE29 Datasheet - Page 47

• Manufacturer Part Number: ST7FLITE29
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

I/O PORTS (Cont’d)
Figure 31. I/O Port General Block Diagram
Table 8. I/O Port Mode Options
Legend: NI - not implemented
Input
Output
REGISTER
ACCESS
REQUEST (ei
EXTERNAL
INTERRUPT
Off - implemented not activated
On - implemented and activated
DDR SEL
OR SEL
DR SEL
Floating with/without Interrupt
Pull-up with/without Interrupt
Push-pull
Open Drain (logic level)
True Open Drain
Configuration Mode
DDR
OR
DR
x
)
SENSITIVITY
SELECTION
ALTERNATE
OUTPUT
From on-chip periphera
ALTERNATE
ENABLE
BIT
If implemented
1
0
Combinational
Logic
l
1
0
FROM
OTHER
BITS
Pull-Up
Note: Refer to the Port Configuration
table for device specific information.
Off
On
Off
NI
true open drain pads. A local protection between
the pad and V
vice against positive stress.
Note: The diode to V
N-BUFFER
PULL-UP
CONDITION
P-Buffer
Off
On
Off
NI
OL
SCHMITT
TRIGGER
CMOS
is implemented to protect the de-
V
DD
DD
NI (see note)
is not implemented in the
to V
On
DD
P-BUFFER
(see table below)
To on-chip peripheral
V
Diodes
DD
DIODES
(see table below)
PULL-UP
(see table below)
ALTERNATE
ANALOG
ST7LITE2
INPUT
to V
INPUT
PAD
On
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