ST10F276Z5 STMicroelectronics, ST10F276Z5 Datasheet - Page 119
ST10F276Z5
Manufacturer Part Number
ST10F276Z5
Description
16-BIT MICROCONTROLLER WITH MAC UNIT, UP TO 832 KBYTES FLASH MEMORY AND UP TO 68 KBYTES RAM
Manufacturer
STMicroelectronics
Datasheet
1.ST10F276Z5.pdf
(239 pages)
Specifications of ST10F276Z5
Single Voltage Supply
5V ±10% (embedded regulator for 1.8 V core supply)
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ST10F276Z5
19.4
19.5
Software reset
A software reset sequence can be triggered at any time by the protected SRST (software
reset) instruction. This instruction can be deliberately executed within a program, e.g. to
leave bootstrap loader mode, or on a hardware trap that reveals system failure.
On execution of the SRST instruction, the internal reset sequence is started. The
microcontroller behavior is the same as for a synchronous short reset, except that only bits
P0.12...P0.8 are latched at the end of the reset sequence, while previously latched, bits
P0.7...P0.2 are cleared (that is written at ‘1’).
A Software reset is always taken as synchronous: there is no influence on Software Reset
behavior with RPD status. In case Bidirectional Reset is selected, a Software Reset event
pulls RSTIN pin low: this occurs only if RPD is high; if RPD is low, RSTIN pin is not pulled
low even though Bidirectional Reset is selected.
Refer to
Figure 35
Watchdog timer reset
When the watchdog timer is not disabled during the initialization, or serviced regularly
during program execution, it will overflow and trigger the reset sequence.
Unlike hardware and software resets, the watchdog reset completes a running external bus
cycle if this bus cycle either does not use READY, or if READY is sampled active (low) after
the programmed wait states.
When READY is sampled inactive (high) after the programmed wait states the running
external bus cycle is aborted. Then the internal reset sequence is started.
Bit P0.12...P0.8 are latched at the end of the reset sequence and bit P0.7...P0.2 are cleared
(that is written at ‘1’).
A Watchdog reset is always taken as synchronous: there is no influence on Watchdog Reset
behavior with RPD status. In case Bidirectional Reset is selected, a Watchdog Reset event
pulls RSTIN pin low: this occurs only if RPD is high; if RPD is low, RSTIN pin is not pulled
low even though Bidirectional Reset is selected.
Refer to
Figure 35
Figure 32
Figure 32
and
and
Figure 36
Figure 36
and
and
Figure 33
Figure 33
for bidirectional.
for bidirectional.
for unidirectional SW reset timing, and to
for unidirectional SW reset timing, and to
Figure
Figure
System reset
34,
34,
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