ST62T25CB6 STMicroelectronics, ST62T25CB6 Datasheet - Page 37

IC MCU 8BIT OTP 4K 28 PDIP

ST62T25CB6

Manufacturer Part Number
ST62T25CB6
Description
IC MCU 8BIT OTP 4K 28 PDIP
Manufacturer
STMicroelectronics
Series
ST6r
Datasheets

Specifications of ST62T25CB6

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-DIP (0.600", 15.24mm)
Processor Series
ST62T2x
Core
ST6
Data Bus Width
8 bit
Data Ram Size
64 B
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
20
Number Of Timers
1
Operating Supply Voltage
3 V to 6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Development Tools By Supplier
ST62GP-EMU2, ST62E2XC-EPB/110, ST62E6XC-EPB/US, ST622XC-KIT/110, STREALIZER-II
Minimum Operating Temperature
- 40 C
On-chip Adc
16-ch x 8-bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-2100-5

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7.4 NOTES RELATED TO WAIT AND STOP MODES
7.4.1 Exit from Wait and Stop Modes
7.4.1.1 NMI Interrupt
It should be noted that when the GEN bit in the
IOR register is low (interrupts disabled), the NMI
interrupt is active but cannot cause a wake up from
STOP/WAIT modes.
7.4.1.2 Restart Sequence
When the MCU exits from WAIT or STOP mode, it
should be noted that the restart sequence de-
pends on the original state of the MCU (normal, in-
terrupt or non-maskable interrupt mode) prior to
entering WAIT or STOP mode, as well as on the
interrupt type.
Normal Mode. If the MCU was in the main routine
when the WAIT or STOP instruction was execut-
ed, exit from Stop or Wait mode will occur as soon
as an interrupt occurs; the related interrupt routine
is executed and, on completion, the instruction
which follows the STOP or WAIT instruction is
then executed, providing no other interrupts are
pending.
Non Maskable Interrupt Mode. If the STOP or
WAIT instruction has been executed during execu-
tion of the non-maskable interrupt routine, the
MCU exits from Stop or Wait mode as soon as an
interrupt occurs: the instruction which follows the
STOP or WAIT instruction is executed, and the
MCU remains in non-maskable interrupt mode,
even if another interrupt has been generated.
Normal Interrupt Mode. If the MCU was in inter-
rupt mode before the STOP or WAIT instruction
was executed, it exits from STOP or WAIT mode
as soon as an interrupt occurs. Nevertheless, two
cases must be considered:
– If the interrupt is a normal one, the interrupt rou-
– In the event of a non-maskable interrupt, the
7.4.2 Recommended MCU Configuration
For lowest power consumption during RUN or
WAIT modes, the user software must configure
the MCU as follows:
– Configure unused I/Os as output push-pull low
– Place all peripherals in their power down modes
– Select the Low Frequency Auxiliary Oscillator
The WAIT and STOP instructions are not execut-
ed if an enabled interrupt request is pending.
tine in which the WAIT or STOP mode was en-
tered will be completed, starting with the
execution of the instruction which follows the
STOP or the WAIT instruction, and the MCU is
still in interrupt mode. At the end of this routine
pending interrupts will be serviced according to
their priority.
non-maskable interrupt service routine is proc-
essed first, then the routine in which the WAIT or
STOP mode was entered will be completed by
executing the instruction following the STOP or
WAIT instruction. The MCU remains in normal in-
terrupt mode.
mode
before entering STOP mode
(provided this runs at a lower frequency than the
main oscillator).
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