ST10F276-6QR3 STMicroelectronics, ST10F276-6QR3 Datasheet - Page 112

• 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
112/231
Synchronous reset and RPD pin
Whenever the RSTIN pin is pulled low (by external hardware or as a consequence of a
Bidirectional reset), the RPD internal weak pull-down is activated. The external capacitance
(if any) on RPD pin is slowly discharged through the internal weak pull-down. If the voltage
level on RPD pin reaches the input low threshold (around 2.5V), the reset event becomes
immediately asynchronous. In case of hardware reset (short or long) the situation goes
immediately to the one illustrated in
the input threshold: the asynchronous reset is completed coherently. To grant the normal
completion of a synchronous reset, the value of the capacitance shall be big enough to
maintain the voltage on RPD pin sufficient high along the duration of the internal reset
sequence.
For a Software or Watchdog reset event, an active synchronous reset is completed
regardless of the RPD status.
It is important to highlight that the signal that makes RPD status transparent under reset is
the internal RSTF (after the noise filter).
Figure 28. Synchronous short / long hardware RESET (EA = 1)
1. RSTIN assertion can be released there. Refer also to
2. If during the reset condition (RSTIN low), RPD voltage drops below the threshold voltage (about 2.5V for
3. RSTIN pin is pulled low if bit BDRSTEN (bit 3 of SYSCON register) was previously set by software. Bit
5V operation), the asynchronous reset is then immediately entered.
RSTIN
RSTF
(After Filter)
P0[15:13]
P0[12:2]
P0[1:0]
FLARST
RST
RSTOUT
RPD
IBUS-CS
(Internal)
≤ 500 ns
≥ 50 ns
≤4 TCL
200
4)
1)
µ
≤12 TCL
not t.
A Discharge
≤ 500 ns
≥ 50 ns
3)
< 1032 TCL
Figure
1024 TCL
not transparent
not transparent
transparent
26. There is no effect if RPD comes again above
Section 19.1
≤ 500 ns
≥ 50 ns
8 TCL
≤ 1 ms
2)
At this time RSTF is sampled HIGH or LOW
so it is SHORT or LONG reset
V
RPD
for details on minimum pulse duration.
> 2.5V Asynchronous Reset not entered
≤ 2 TCL
not t.
not t.
7 TCL
ST10F276E