ST10F276-6QR3 STMicroelectronics, ST10F276-6QR3 Datasheet - Page 104

• Manufacturer Part Number: ST10F276-6QR3
• Description: MCU 16BIT 832K FLASH 144-PQFP
• Manufacturer: STMicroelectronics
• Series: ST10r

Specifications of ST10F276-6QR3

• Core Processor: ST10
• Core Size: 16-Bit
• Speed: 64MHz
• Connectivity: ASC, CAN, EBI/EMI, I²C, SSC, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 111
• Program Memory Size: 832KB (832K x 8)
• Program Memory Type: FLASH
• Ram Size: 68K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 24x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 144-MQFP, 144-PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

System reset
19
Table 60.
1. RSTIN pulse should be longer than 500ns (Filter) and than settling time for configuration of Port0.
2. See next
3. The RPD status has no influence unless Bidirectional Reset is activated (bit BDRSTEN in SYSCON): RPD low inhibits the
19.1
104/231
Power-on reset
Asynchronous Hardware reset
Synchronous Long Hardware reset
Synchronous Short Hardware reset
Watchdog Timer reset
Software reset
Bidirectional reset on SW and WDT reset events, that is RSTIN is not activated (refer to sections 19.4,
Section 19.1
Reset source
System reset
System reset initializes the MCU in a predefined state. There are six ways to activate a reset
state. The system start-up configuration is different for each case as shown in
Reset event definition
Input filter
On RSTIN input pin an on-chip RC filter is implemented. It is sized to filter all the spikes
shorter than 50ns. On the other side, a valid pulse shall be longer than 500ns to grant that
ST10 recognizes a reset command. In between 50ns and 500ns a pulse can either be
filtered or recognized as valid, depending on the operating conditions and process
variations.
For this reason all minimum durations mentioned in this Chapter for the different kind of
reset events shall be carefully evaluated taking into account of the above requirements.
In particular, for Short Hardware Reset, where only 4 TCL is specified as minimum input
reset pulse duration, the operating frequency is a key factor. Examples:
●
●
For a CPU clock of 64 MHz, 4 TCL is 31.25ns, so it would be filtered. In this case the
minimum becomes the one imposed by the filter (that is 500ns).
For a CPU clock of 4 MHz, 4 TCL is 500ns. In this case the minimum from the formula
is coherent with the limit imposed by the filter.
for more details on minimum reset pulse duration.
SHWR
WDTR
PONR
LHWR
SWR
Flag
RPD status
High
High
Low
Low
(3)
(3)
Power-on
t
t
t
t
WDT overflow
SRST instruction execution
RSTIN
RSTIN
RSTIN
RSTIN
>
> max(4 TCL, 500ns)
> (1032 + 12) TCL + max(4 TCL, 500ns)
< (1032 + 12) TCL + max(4 TCL, 500ns)
(1)
Conditions
19.5
and 19.6).
Table
ST10F276E
60.
(2)
(2)