ST72F321AR9TA STMicroelectronics, ST72F321AR9TA Datasheet - Page 167

• Manufacturer Part Number: ST72F321AR9TA
• Description: IC MCU 8BIT 60KB FLASH 64-TQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F321AR9TA

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 48
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3.8 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

12.12 10-BIT ADC CHARACTERISTICS
Subject to general operating conditions for V
Notes:
1. Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than 10kΩ). Data
based on characterization results, not tested in production.
2. Injecting negative current on any of the analog input pins significantly reduces the accuracy of any conversion being
performed on any analog input. Analog pins can be protected against negative injection by adding a Schottky diode (pin
to ground). Injecting negative current on digital input pins degrades ADC accuracy especially if performed on a pin close
to the analog input pins. Any positive injection current within the limits specified for I
does not affect the ADC accuracy.
Symbol
V
C
R
C
f
V
t
t
f
AREF
ADC
ADC
ADC
AIN
ADC
AIN
AIN
AIN
ADC clock frequency
Analog reference voltage
Conversion voltage range
External input impedance
External capacitor on analog input
Variation freq. of analog input signal
Internal sample and hold capacitor
Conversion time (Sample+Hold)
f
- No of sample capacitor loading cycles
- No. of Hold conversion cycles
CPU
=8MHz, SPEED=0 f
Parameter
ADC
1)
=2MHz
DD
0.7*V
, f
CPU
DD
Conditions
, and T
≤ V
AREF
A
ST72321Rx ST72321ARx ST72321Jx
unless otherwise specified.
≤ V
DD
V
Min
0.4
3.8
SSA
INJ(PIN)
and ΣI
Typ
7.5
12
11
4
INJ(PIN)
Figure 96
Figure 97
V
Max
and
V
see
AREF
2
DD
in
Section 12.8
167/193
1/f
Unit
MHz
kΩ
Hz
pF
pF
μs
V
ADC