ST7DALIF2 STMicroelectronics, ST7DALIF2 Datasheet - Page 65

• Manufacturer Part Number: ST7DALIF2
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMicroelectronics

Specifications of ST7DALIF2

• 8 Kbytes Single Voltage Flash Program Memory With Read-out Protection, In-circuit Programming And In-application Programming (icp And Iap). 10k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C.
• 256 Bytes Data Eeprom With Read-out Protection. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C.
• Clock Sources: Internal 1% RC oscillator, crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Wait and Slow, Auto Wake Up From Halt

ST7DALIF2
Caution:
Table 26.
1. When the I/O port is in input configuration and the associated alternate function is enabled as an output,
2. When the I/O port is in output configuration and the associated alternate function is enabled as an input,
3. For true open drain, these elements are not implemented.
Analog alternate function
Configure the I/O as floating input to use an ADC input. The analog multiplexer (controlled
by the ADC registers) switches the analog voltage present on the selected pin to the
common analog rail, connected to the ADC input.
Analog recommendations
Do not change the voltage level or loading on any I/O while conversion is in progress. Do not
have clocking pins located close to a selected analog pin.
The analog input voltage level must be within the limits stated in the absolute maximum
ratings.
reading the DR register will read the alternate function output status.
the alternate function reads the pin status given by the DR register content.
I/O configurations
PAD
PAD
PAD
V
V
DD
R
DD
R
R
V
PU
PU
PU
DD
NOTE 3
NOTE 3
NOTE 3
PULL-UP
CONDITION
Hardware configuration
INTERRUPT
CONDITION
OTHER
FROM
PINS
COMBINATIONAL
ALTERNATE
REGISTER
ENABLE
BIT
DR
LOGIC
DR REGISTER ACCESS
REGISTER
REGISTER
DR
DR
POLARITY
SELECTION
From on-chip periphera
DR REGISTER ACCESS
DR REGISTER ACCESS
W
R
ALTERNATE
OUTPUT
R/W
ANALOG INPUT
EXTERNAL INTERRUPT
SOURCE (ei
R/W
ALTERNATE INPUT
To on-chip peripheral
DATA BUS
DATA BUS
l
DATA BUS
x
)
I/O ports
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