ST7DALIF2 STMicroelectronics, ST7DALIF2 Datasheet - Page 90

• 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
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DALI communication module
Introduction
The DALI Communication Module (DCM) is a serial communication circuit designed for
controllable electronic ballasts. Ballasts are the devices used to provide the required starting
voltage and operating current for fluorescent, mercury, or other electric-discharge lamps.
The DCM supports the DALI (Digital Addressable Lighting Interface) communications
standard (IEC standard).
Main features
Figure 41. DALI communication module block diagram
The 4-bit preshift register is always active, except when in Halt mode or if the DCME bit = 0.
– 8-bit forward address register for addressing up to 64 digital ballasts
– 1.2 kHz transmission rate ±10%
– 8-bit forward and backward data registers for bi-directional communications
– Maskable interrupt
f
CPU
1/N
8-bit DCMCLK
8-bit DCMBD
ITE
8-bit DCMFA
8-bit DCMFD
0
clock counter
Register
Register
Register
Register
4-bit sample
1/16
ITF
0
EF
0
8
16-bit Shift Register
8
8
RTF
0
DCME
DCM Interrupt Request
CK3
f
CPU
CK2
RTA
CK1
RTS
Error Detection
Arbitration &
4-bit Pre-shift
CK0
FTS
Register
DCMCSR
Register
DCMCR
Register
Detector
Edge
f
DALI
DALIOUT
DALIIN
ST7DALIF2