ST72F321AR9TA STMicroelectronics, ST72F321AR9TA Datasheet - Page 128

• 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: -

ST72321Rx ST72321ARx ST72321Jx
10.8 10-BIT A/D CONVERTER (ADC)
10.8.1 Introduction
The on-chip Analog to Digital Converter (ADC) pe-
ripheral is a 10-bit, successive approximation con-
verter with internal sample and hold circuitry. This
peripheral has up to 16 multiplexed analog input
channels (refer to device pin out description) that
allow the peripheral to convert the analog voltage
levels from up to 16 different sources.
The result of the conversion is stored in a 10-bit
Data Register. The A/D converter is controlled
through a Control/Status Register.
Figure 68. ADC Block Diagram
128/193
f
CPU
AIN0
AINx
AIN1
DIV 2
DIV 4
ANALOG
MUX
EOC SPEED ADON
4
ADCDRH
0
1
f
ADC
0
ADCDRL
CH3
D9
CH2
D8
10.8.2 Main Features
■
■
■
■
■
■
The block diagram is shown in
CH1
D7
10-bit conversion
Up to 16 channels with multiplexed input
Linear successive approximation
Data register (DR) which contains the results
Conversion complete status flag
On/off bit (to reduce consumption)
0
CH0
D6
0
D5
ADCCSR
0
D4
0
ANALOG TO DIGITAL
D3
CONVERTER
0
D2
0
Figure
D1
68.
D0