ST62T18CB6 STMicroelectronics, ST62T18CB6 Datasheet - Page 47

• Manufacturer Part Number: ST62T18CB6
• Description: 8-bit Microcontrollers - MCU OTP EPROM 8K SPI/UAR
• Manufacturer: STMicroelectronics

Specifications of ST62T18CB6

• Core: ST6
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 7948 B
• Data Ram Size: 192 B
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 6 V
• Package / Case: PDIP-20
• Mounting Style: Through Hole
• A/d Bit Size: 8 bit
• A/d Channels Available: 7
• Data Rom Size: 64 B
• Interface Type: UART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 12
• Number Of Timers: 1
• Program Memory Type: EPROM
• Factory Pack Quantity: 20
• Supply Voltage - Max: 6 V
• Supply Voltage - Min: 3.6 V

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
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.
ST62T18C/E18C
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