ST7LITE25F2 STMicroelectronics, ST7LITE25F2 Datasheet - Page 43
ST7LITE25F2
Manufacturer Part Number
ST7LITE25F2
Description
8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
Manufacturer
STMicroelectronics
Datasheet
1.ST7LITE20F2.pdf
(133 pages)
Specifications of ST7LITE25F2
8 Kbytes Single Voltage Flash Program Memory With Read-out Protection, In-circuit Programming And In-application Programming (icp And Iap). 10k Write/erase Cycles Guaranteed, Data Retention
20 years at 55˚C.
Clock Sources
Internal 1% RC oscillator, crystal/ceramic resonator or external clock
Five Power Saving Modes
Halt, Active-Halt, Wait and Slow, Auto Wake Up From Halt
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POWER SAVING MODES (Cont’d)
Similarities with Halt mode
The following AWUFH mode behaviour is the
same as normal Halt mode:
– The MCU can exit AWUFH mode by means of
– When entering AWUFH mode, the I bit in the CC
Figure 29. AWUF Halt Timing Diagram
AWUFH interrupt
f
any interrupt with exit from Halt capability or a re-
set (see
register is forced to 0 to enable interrupts. There-
fore, if an interrupt is pending, the MCU wakes
up immediately.
f
AWU_RC
CPU
Section 9.4 HALT
RUN MODE
MODE).
HALT MODE
t
AWU
– In AWUFH mode, the main oscillator is turned off
– The compatibility of Watchdog operation with
causing all internal processing to be stopped, in-
cluding the operation of the on-chip peripherals.
None of the peripherals are clocked except those
which get their clock supply from another clock
generator (such as an external or auxiliary oscil-
lator like the AWU oscillator).
AWUFH mode is configured by the WDGHALT
option bit in the option byte. Depending on this
setting, the HALT instruction when executed
while the Watchdog system is enabled, can gen-
erate a Watchdog RESET.
256 OR 4096 t
CPU
RUN MODE
Clear
by software
ST7LITE2
43/133
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