ST72T631K4M1 STMicroelectronics, ST72T631K4M1 Datasheet - Page 84

• Manufacturer Part Number: ST72T631K4M1
• Description: Microcontrollers (MCU) OTP EPROM 16K USB/SC
• Manufacturer: STMicroelectronics

Specifications of ST72T631K4M1

• Data Bus Width: 8 bit
• Program Memory Type: EPROM
• Program Memory Size: 16 KB
• Data Ram Size: 512 B
• Interface Type: I2C, SCI, USB
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 19
• Number Of Timers: 2
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: SO-34
• Minimum Operating Temperature: 0 C
• On-chip Adc: 8 bit
• Lead Free Status / Rohs Status: No

ST7263
5.8 8-BIT A/D CONVERTER (ADC)
5.8.1 Introduction
The on-chip Analog to Digital Converter (ADC) pe-
ripheral is a 8-bit, successive approximation con-
verter with internal sample and hold circuitry. This
peripheral has up to 8 multiplexed analog input
channels (refer to device pin out description) that
allow the peripheral to convert the analog voltage
levels from up to 8 different sources.
The result of the conversion is stored in a 8-bit
Data Register. The A/D converter is controlled
through a Control/Status Register.
Figure 42. ADC Block Diagram
84/109
AIN3
AIN4
AIN5
AIN6
AIN7
AIN0
AIN1
AIN2
ANALOG
MUX
f
CPU
SAMPLE
HOLD
&
COCO
AD7
5.8.2 Main Features
The block diagram is shown in
8-bit conversion
Up to 8 channels with multiplexed input
Linear successive approximation
Data register (DR) which contains the results
Conversion complete status flag
On/Off bit (to reduce consumption)
AD6
-
ADON
AD5
ANALOG TO
DIGITAL
CONVERTER
(Control Status Register) CSR
AD4
0
AD3
(Data Register) DR
-
CH2
AD2
Figure
CH1
AD1
42.
CH0
AD0