ST62T65CN6 STMicroelectronics, ST62T65CN6 Datasheet - Page 48

• Manufacturer Part Number: ST62T65CN6
• Description: Microcontrollers (MCU) OTP EPROM 4K SPI
• Manufacturer: STMicroelectronics

Specifications of ST62T65CN6

• Processor Series: ST62T6x
• Core: ST6
• Data Bus Width: 8 bit
• Program Memory Type: EPROM
• Program Memory Size: 3884 B
• Data Ram Size: 128 B
• Interface Type: SCI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 1
• Operating Supply Voltage: 3 V to 6 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / Rohs Status: Details

ST62T55C ST62T65C/E65C
AUTO-RELOAD TIMER (Cont’d)
It should be noted that the reload values will also
affect the value and the resolution of the duty cycle
of PWM output signal. To obtain a signal on ARTI-
Mout, the contents of the ARCP register must be
greater than the contents of the ARRC register.
The maximum available resolution for the ARTI-
Mout duty cycle is:
Where ARRC is the content of the Reload/Capture
register. The compare value loaded in the Com-
pare Register, ARCP, must be in the range from
(ARRC) to 255.
Figure 28. Auto-reload Timer PWM Function
48/86
PWM OUTPUT
COMPARE
VALUE
REGISTER
COUNTER
RELOAD
Resolution = 1/[255-(ARRC)]
255
000
The ARTC counter is initialized by writing to the
ARRC register and by then setting the TCLD (Tim-
er Load) and the TEN (Timer Clock Enable) bits in
the Mode Control register, ARMC.
Enabling and selection of the clock source is con-
trolled by the CC0, CC1, SL0 and SL1 bits in the
Status Control Register, ARSC1. The prescaler di-
vision ratio is selected by the PS0, PS1 and PS2
bits in the ARSC1 register.
In Auto-reload Mode, any of the three available
clock sources can be selected: Internal Clock, In-
ternal Clock divided by 3 or the clock signal
present on the ARTIMin pin.
VR001852
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