ST62T25CM3 STMicroelectronics, ST62T25CM3 Datasheet - Page 45

IC MCU 8BIT W/ADC 28-SOIC

ST62T25CM3

Manufacturer Part Number
ST62T25CM3
Description
IC MCU 8BIT W/ADC 28-SOIC
Manufacturer
STMicroelectronics
Series
ST6r
Datasheet

Specifications of ST62T25CM3

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 ~ 125°C
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
WATCHDOG TIMER (Cont’d)
These instructions test the C bit and reset the
MCU (i.e. disable the Watchdog) if the bit is set
(i.e. if the Watchdog is active), thus disabling the
Watchdog.
For more information on the use of the watchdog,
please read application note AN1015.
9.1.5 Low Power Modes
9.1.6 Interrupts
None.
Mode
WAIT
STOP
Description
No effect on Watchdog.
Behaviour depends on the EXTCNTL option in the Option bytes:
1. Watchdog disabled:
The MCU will enter Stop mode if a STOP instruction is executed.
2. Watchdog enabled and EXTCNTL option disabled:
If a STOP instruction is encountered, it is interpreted as a WAIT.
3. Watchdog and EXTCNTL option enabled:
If a STOP instruction is encountered when the NMI pin is low, it is interpreted as a WAIT. If, however, the
STOP instruction is encountered when the NMI pin is high, the Watchdog counter is frozen and the CPU en-
ters STOP mode.
When the MCU exits STOP mode (i.e. when an interrupt is generated), the Watchdog resumes its activity.
Note: This note applies only when the watchdog is
used as a standard timer. It is recommended to
read the counter twice, as it may sometimes return
an invalid value if the read is performed while the
counter is decremented (counter bits in transient
state). To validate the return value, both values
read must be equal. The counter decrements eve-
ry 384 µs at 8 MHz f
ST6215CM-Auto ST6225CM-Auto
OSC
.
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