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L9803 Datasheet(PDF) 43 Page - STMicroelectronics

No. de pieza L9803
Descripción Electrónicos  Super smart power motor driver with 8-Bit MCU, RAM, EEPROM, ADC, WDG, Timers, PWM and H-bridge driver
PDF  126 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9803 Datasheet(HTML) 43 Page - STMicroelectronics

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L9803
On-Chip Peripherals
43/126
The timer clock depends on the clock control bits of the CR2 register, as illustrated in
Table 9: Clock Control Bits. The value in the counter register repeats every 131072, 262144
or 524288 CPU clock cycles depending on the CC[1:0] bits.
The timer frequency can be f
CPU/2, fCPU/4, fCPU/8 or an external frequency.
Figure 19.
Timer Block Diagram
MCU-PERIPHERAL INTERFACE
COUNTER
ALTERNATE
REGISTER
OUTPUT
COMPARE
REGISTER
OUTPUT COMPARE
EDGE DETECT
OVERFLOW
DETECT
CIRCUIT
1/2
1/4
1/8
8-bit
buffer
ST7 INTERNAL BUS
LATCH1
OCMP1
ICAP1
EXCLK
CPU CLOCK
TIMER INTERRUPT
ICF2
ICF1
0
0
0
OCF2
OCF1 TOF
PWM
OC1E
EXEDG
IEDG2
CC0
CC1
OC2E OPM
FOLV2
ICIE
OLVL1
IEDG1
OLVL2
FOLV1
OCIE TOIE
ICAP2
LATCH2
OCMP2
8
8
8 low
16
8 high
16
16
16
16
CR1
CR2
SR
6
16
8
8
8
8
8
8
EXEDG
TIMER INTERNAL BUS
CIRCUIT1
EDGE DETECT
CIRCUIT2
CIRCUIT
1
OUTPUT
COMPARE
REGISTER
2
INPUT
CAPTURE
REGISTER
1
INPUT
CAPTURE
REGISTER
2
CC1 CC0
16 BIT
FREE RUNNING
COUNTER



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