ST62T25CM6/TR STMicroelectronics, ST62T25CM6/TR Datasheet - Page 35

• Manufacturer Part Number: ST62T25CM6/TR
• Description: IC MCU 8BIT W/ADC 28-SOIC
• Manufacturer: STMicroelectronics
• Series: ST6r

Specifications of ST62T25CM6/TR

• Core Processor: ST6
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LVD, POR, WDT
• Number Of I /o: 20
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: OTP
• Ram Size: 64 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 6 V
• Data Converters: A/D 16x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

7.3 STOP MODE
STOP mode is the lowest power consumption
mode of the MCU (see
The MCU goes into STOP mode as soon as the
STOP instruction is executed. This has the follow-
ing effects:
– Program execution is stopped, the microcontrol-
– The contents of RAM and the peripheral regis-
– The oscillator is stopped, so peripherals cannot
Exit from STOP Mode
The MCU remains in STOP mode until one of the
following events occurs:
– RESET (Watchdog, LVD or RESET pin)
– A peripheral interrupt (assuming this peripheral
– An external interrupt (I/O port, NMI)
In all cases a delay of 2048 clock cycles (f
generated to make sure the oscillator has started
properly.
ler can be considered as being “frozen”.
ters are kept safely as long as the power supply
voltage is higher than the RAM retention voltage.
work except the those that can be driven by an
external clock.
can be driven by an external clock)
Figure
22).
INT
) is
The Program Counter then points to the starting
address of the interrupt or RESET service routine
(see
STOP Mode and Watchdog
When the Watchdog is active (hardware or soft-
ware activation), the STOP instruction is disabled
and a WAIT instruction will be executed in its place
unless the EXCTNL option bit is set to 1 in the op-
tion bytes and a a high level is present on the NMI
pin. In this case, the STOP instruction will be exe-
cuted and the Watchdog will be frozen.
Figure 21. STOP Mode Timing Overview
INSTRUCTION
RUN
Figure
STOP
ST6215CM-Auto ST6225CM-Auto
STOP
INTERRUPT
21).
RESET
OR
CLOCK
DELAY
2048
CYCLE
VECTOR
FETCH
RUN
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