ST10F273M-4QR3 STMicroelectronics, ST10F273M-4QR3 Datasheet - Page 145
![no-image](/images/manufacturer_photos/0/6/637/stmicroelectronics_sml.jpg)
ST10F273M-4QR3
Manufacturer Part Number
ST10F273M-4QR3
Description
MCU 16BIT 512K FLASH 144-PQFP
Manufacturer
STMicroelectronics
Series
ST10r
Datasheet
1.ST10F273M-4TR3.pdf
(182 pages)
Specifications of ST10F273M-4QR3
Core Processor
ST10
Core Size
16-Bit
Speed
40MHz
Connectivity
ASC, CAN, EBI/EMI, I²C, SSC, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
111
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
36K 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
Processor Series
ST10F27x
Core
ST10
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ST10F273M-4QR3
Manufacturer:
STMicroelectronics
Quantity:
10 000
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ST10F273M
The considerations above lead to impose new constraints to the external circuit, to reduce
the accuracy error due to the voltage drop on C
above, it is simple to derive the following relation between the ideal and real sampled
voltage on C
From this formula, in the worst case (when V
assuming to accept a maximum error of half a count (~2.44mV), a constraint is immediately
obvious 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 a hypothesis on the
characteristics of the analog signal to be sampled.
Example of external network sizing
The following hypotheses 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
S
F
:
value:
S
C
):
):
P1
S
-----------
V A2
):
):
V A
S
SW
):
AD
=
):
P2
------------------------------------------------------------
C P1
):
C F 2048 C S
INJ
0
):
):
AM)
C P1
): 3mA
>
+
: 12V
A
10 kHz
25 kHz
1µs
5pF
1pF
4pF
100Ω
500Ω
200Ω
C P2
+
is maximum, that is, for instance 5V),
S
C P2
; from the two charge balance equations
⋅
+
C F
+
C F
+
C S
Electrical characteristics
145/182
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