ST10F271Z1T3 STMicroelectronics, ST10F271Z1T3 Datasheet - Page 149

• Manufacturer Part Number: ST10F271Z1T3
• Description: MCU 16BIT 128KBIT FLASH 144-TQFP
• Manufacturer: STMicroelectronics
• Series: ST10r

Specifications of ST10F271Z1T3

• Core Processor: ST10
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: CAN, I²C, SSC, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 111
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K 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-TQFP, 144-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

ST10F271Z1
From this formula, in the worst case (when V
assuming to accept a maximum error of half a count (~2.44 mV), it is immediately evident a
constraints on C
In the next section an example of how to design the external network is provided, assuming
some reasonable values for the internal parameters and making hypothesis on the
characteristics of the analog signal to be sampled.
Example of external network sizing
The following hypothesis are formulated in order to proceed in designing the external
network on A/D Converter input pins:
●
●
●
●
●
●
●
●
●
●
●
Analog signal source bandwidth (f
Conversion rate (f
Sampling time (T
Pin input capacitance (C
Pin input routing capacitance (C
Sampling capacitance (C
Maximum input current injection (I
Maximum analog source voltage (V
Analog source impedance (R
Channel switch resistance (R
Sampling switch resistance (R
F
value:
S
C
):
):
P1
S
):
):
S
SW
AD
):
P2
):
):
0
INJ
C F 2048 C S
):
):
AM)
): 3 mA
>
: 12 V
A
10 kHz
25 kHz
1 µs
5 pF
1 pF
4 pF
100 Ω
500 Ω
200 Ω
is maximum, that is for instance 5 V),
⋅
Electrical characteristics
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