ST72C334N2B6 STMicroelectronics, ST72C334N2B6 Datasheet - Page 97

• Manufacturer Part Number: ST72C334N2B6
• Description: Microcontrollers (MCU) Flash 8K SPI/SCI
• Manufacturer: STMicroelectronics

Specifications of ST72C334N2B6

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 8 KB
• Data Ram Size: 384 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 44
• Number Of Timers: 16 bit
• Operating Supply Voltage: 3.2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: SDIP-56
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / Rohs Status: No

8-BIT A/D CONVERTER (ADC) (Cont’d)
6.7.6 Register Description
CONTROL/STATUS REGISTER (CSR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7 = COCO Conversion Complete
This bit is set by hardware. It is cleared by soft-
ware reading the result in the DR register or writing
to the CSR register.
0: Conversion is not complete
1: Conversion can be read from the DR register
Bit 6 = Reserved. must always be cleared.
Bit 5 = ADON A/D Converter On
This bit is set and cleared by software.
0: A/D converter is switched off
1: A/D converter is switched on
Bit 4 = Reserved. must always be cleared.
Bit 3:0 = CH[3:0] Channel Selection
These bits are set and cleared by software. They
select the analog input to convert.
*Note: The number of pins AND the channel selection var-
ies according to the device. Refer to the device pinout.
COCO
7
Channel Pin*
0
AIN10
AIN11
AIN12
AIN13
AIN14
AIN15
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
AIN9
ADON
0
CH3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
CH3
CH2
CH2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
CH1
CH1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
CH0
CH0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
DATA REGISTER (DR)
Read Only
Reset Value: 0000 0000 (00h)
Bit 7:0 = D[7:0] Analog Converted Value
This register contains the converted analog value
in the range 00h to FFh.
Note: Reading this register reset the COCO flag.
D7
7
ST72334J/N, ST72314J/N, ST72124J
D6
D5
D4
D3
D2
D1
97/125
D0
0