L9803 STMicroelectronics, L9803 Datasheet - Page 55

• Manufacturer Part Number: L9803
• Description: Super Smart Power Motor Driver With 8-bit Mcu, Ram, Eeprom, Adc, Wdg, Timers, Pwm And H-bridge Driver
• Manufacturer: STMicroelectronics

L9803
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7 = OC1E Output Compare 1 Enable.
0: Output Compare 1 function is enabled, but the OCMP1 pin is a general I/O.
1: Output Compare 1 function is enabled, the OCMP1 pin is dedicated to the Output
Compare 1 capability of the timer.
Bit 6 = OC2E Output Compare 2 Enable.
0: Output Compare 2 function is enabled, but the OCMP2 pin is a general I/O.
1: Output Compare 2 function is enabled, the OCMP2 pin is dedicated to the Output
Compare 2 capability of the timer.
Bit 5 = OPM One Pulse Mode.
0: One Pulse Mode is not active.
1: One Pulse Mode is active, the ICAP1 pin can be used to trigger one pulse on the
OCMP1 pin; the active transition is given by the IEDG1 bit. The length of the generated
pulse depends on the contents of the OCR1 register.
Bit 4 = PWM Pulse Width Modulation.
0: PWM mode is not active.
1: PWM mode is active, the OCMP1 pin outputs a programmable cyclic signal; the length
of the pulse depends on the value of OCR1 register; the period depends on the value of
OCR2 register.
Bit 3, 2 = CC1-CC0 Clock Control.
The value of the timer clock depends on these bits:
Table 9.
OC1E
7
CC1
0
0
1
1
Clock Control Bits
OC2E
OPM
CC0
0
1
0
1
PWM
CC1
External Clock where available
CC0
Timer Clock
f
f
f
IEDG2
CPU
CPU
CPU
On-Chip Peripherals
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/ 2
/ 8
EXEDG
0
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