ST7DALIF2 STMicroelectronics, ST7DALIF2 Datasheet - Page 94

• 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

DALI communication module
16.8
16.9
16.10
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Table 43.
Interrupts
Table 44.
Bi-phase bit detection
The clock used for sampling the DALI signal is programmed by the DCMCLK register. Each
bit phase is sampled 16 times. The bit phase level is determined by two of three sample
clock pulses (pulses 6,7,8). The two phase levels of the bi-phase bit are shifted into the 4-bit
pre-shift register at the 9th sample clock pulse.
Only the second phase level of the bi-phase bit is shifted into the 16-bit shifter.
The 4-bit pre-shifter is used to detect any errors in the received frame.
When a change of phase is detected (edge trigger), the 4-bit sample clock counter (integer
range 0 to15) is cleared.
Low power modes
Active-halt
Interrupt event
Mode
Wait
Halt
EOT
Effect of low power modes on DCM
Interrupt control bits
No effect on DCM
DCM registers are frozen
No effect on DCM
Event
flag
ITF
control
Enable
Description
ITE
bit
from
Wait
Exit
Yes
ST7DALIF2
from
Exit
Halt
No