ST62T65CM6 STMicroelectronics, ST62T65CM6 Datasheet - Page 47

• Manufacturer Part Number: ST62T65CM6
• Description: IC MCU 8BIT OTP/EPROM 28 PSOIC
• Manufacturer: STMicroelectronics
• Series: ST6r

Specifications of ST62T65CM6

• Core Processor: ST6
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI
• Peripherals: LED, LVD, POR, WDT
• Number Of I /o: 21
• Program Memory Size: 3.8KB (3.8K x 8)
• Program Memory Type: OTP
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 6 V
• Data Converters: A/D 13x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: ST6
• No. Of I/o's: 21
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 128Byte
• Cpu Speed: 8MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• Processor Series: ST62T6x
• Core: ST6
• Data Bus Width: 8 bit
• 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
• Development Tools By Supplier: ST62GP-EMU2, ST62E2XC-EPB/110, ST62E6XC-EPB/US, STREALIZER-II
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2103-5

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/[256-(ARRC)]
255
000
t
HIGH
t
LOW
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.
ST6255C ST6265C ST6265B
VR001852
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