ST7FLITE49K2T6 STMicroelectronics, ST7FLITE49K2T6 Datasheet - Page 126

• Manufacturer Part Number: ST7FLITE49K2T6
• Description: IC MCU 8BIT 8K FLASH 32LQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FLITE49K2T6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 24
• 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): 2.4 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Processor Series: ST7FLITE4x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 384 B
• Interface Type: I2C, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST7FLITE-SK/RAIS, ST7FLI49M-D/RAIS, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 10 Channel
• For Use With: 497-8399 - BOARD EVAL ST7LITE49M/STLED316S497-5858 - EVAL BOARD PLAYBACK ST7FLITE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

On-chip peripherals
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Figure 65. One pulse mode sequence
When a valid event occurs on the ICAP1 pin, the counter value is loaded in the ICR1
register. The counter is then initialized to FFFCh, the OLVL2 bit is output on the OCMP1 pin
and the ICF1 bit is set.
Because the ICF1 bit is set when an active edge occurs, an interrupt can be generated if the
ICIE bit is set.
Clearing the input capture interrupt request (that is, clearing the ICFi bit) is done in two
steps:
1.
2.
The OC1R register value required for a specific timing application can be calculated using
the following formula:
Equation 3
Where:
t =
f
PRESC
If the timer clock is an external clock the formula is:
Equation 4
Where:
t =
f
When the value of the counter is equal to the value of the contents of the OC1R register, the
OLVL1 bit is output on the OCMP1 pin, (see
CPU
EXT
=
Reading the SR register while the ICFi bit is set.
Accessing (reading or writing) the ICiLR register.
=
=
OCiR =
pulse period (in seconds)
CPU clock frequency (in hertz)
timer prescaler factor (2, 4 or 8 depending on the CC[1:0] bits, see
control register 2 (TACR2) on page
pulse period (in seconds)
external timer clock frequency (in hertz)
t
*
f
EXT
-5
When event
occurs on
OCiR value =
= OC1R
ICAP1
counter
When
Figure
One pulse mode cycle
PRESC
t
132)
OCMP1 = OLVL1
OCMP1 = OLVL2
Counter is reset
*
ICR1 = counter
ICF1 bit is set
f
CPU
to FFFCh
66).
- 5
ST7LITE49K2
: Timer A