ST7DALIF2 STMicroelectronics, ST7DALIF2 Datasheet - Page 96
ST7DALIF2
Manufacturer Part Number
ST7DALIF2
Description
8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
Manufacturer
STMicroelectronics
Datasheet
1.ST7DALIF2.pdf
(171 pages)
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
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DALI communication module
16.11
16.11.1
16.11.2
96/171
Figure 44. Example of DALI signal sampling
Register description
DCM data rate control register (DCMCLK)
Read / Write
Reset Value: 0000 0000 (00h)
Bits 7:0 = DCMCLK[7:0] Clock Prescaler.
These bits are set/cleared by software and cleared by hardware after a reset.
These 8 bits are used for tuning the DALI data rate. f
integer value of the DCMCLK register.
DCM forward address register (DCMFA)
Read only
Reset Value: 0000 0000 (00h)
CK7
FA7
7
7
DALI Signal
Edge Trigger
4-bit sample
clock counter
(/16 divider)
DCMCSR[3:0]
bits
Legend:
m = (DCMCLK integer value+1) x t
f
f
t
Example:
DALI
CPU
CPU
= 8 MHz
=
= 1.2 kHz
f
CPU
CK6
FA6
1
t
N = 207 (DCMCLK)
t
CPU
CPU
0000
CK5
FA5
m
= 125ns
0001
0000
CPU
CK4
FA4
833.33µs
m = 26 µs (208 x 125ns)
1111 0000
t
CPU
CK3
FA3
DATA
= f
1111
CPU
CK2
FA2
/[(N+1)*16] where N is the
xxxx
CK1
FA1
t
CPU
0000
xxxx
ST7DALIF2
CK0
FA0
0
0
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