ST7FLITE39F2M3TR STMicroelectronics, ST7FLITE39F2M3TR Datasheet - Page 61

• Manufacturer Part Number: ST7FLITE39F2M3TR
• Description: IC MCU 8BIT 8K FLASH 20SOIC
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FLITE39F2M3TR

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: LINSCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SOIC (7.5mm Width)
• For Use With: 497-8406 - BOARD STF20NM50FD/STF7LITE39BF2497-8403 - BOARD DEMO STCC08 AC SW DETECTOR497-5858 - EVAL BOARD PLAYBACK ST7FLITE497-5049 - KIT STARTER RAISONANCE ST7FLITE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DUAL 12-BIT AUTORELOAD TIMER 3 (Cont’d)
Break Function
The break function can be used to perform an
emergency shutdown of the application being driv-
en by the PWM signals.
The break function is activated by the external
BREAK pin (active low). In order to use the
BREAK pin it must be previously enabled by soft-
ware setting the BPEN bit in the BREAKCR regis-
ter.
When a low level is detected on the BREAK pin,
the BA bit is set and the break function is activat-
ed. In this case, the 4 PWM signals are stopped.
Software can set the BA bit to activate the break
function without using the BREAK pin.
When the break function is activated (BA bit =1):
Figure 40. Block Diagram of Break Function
BREAK pin
Note:
The BREAK pin value is latched by the BA bit.
(Active Low)
BA
PWM3
PWM2
PWM0
PWM1
BPEN
PWM3
BREAKCR Register
PWM2
(Inverters)
PWM1
– The break pattern (PWM[3:0] bits in the BREAK-
– The 12-bit PWM counter CNTR1 is put to its re-
– The 12-bit PWM counter CNTR2 is put to its re-
– ATR1, ATR2, Preload and Active DCRx are put
– The PWMCR register is reset.
– Counters stop counting.
When the break function is deactivated after ap-
plying the break (BA bit goes from 1 to 0 by soft-
ware):
– The control of the 4 PWM outputs is transferred
CR) is forced directly on the PWMx output pins
(after the inverter).
set value, i.e. 00h.
set value,i.e. 00h.
to their reset values.
to the port registers.
PWM0
1
0
When BA is set:
PWM counter -> Reset value
ATRx & DCRx -> Reset value
PWM Mode -> Reset value
ST7LITE3xF2
PWM0
PWM1
PWM2
PWM3
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