ST72T774J9B1 STMicroelectronics, ST72T774J9B1 Datasheet - Page 125

• Manufacturer Part Number: ST72T774J9B1
• Manufacturer: STMicroelectronics

Specifications of ST72T774J9B1

• Cpu Family: ST7
• Device Core Size: 8b
• Frequency (max): 24MHz
• Interface Type: I2C/USB
• Program Memory Type: EPROM
• Program Memory Size: 60KB
• Total Internal Ram Size: 1KB
• # I/os (max): 31
• Number Of Timers - General Purpose: 1
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4V
• On-chip Adc: 1-chx8-bit
• On-chip Dac: 1-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 42
• Package Type: SPDIP
• Lead Free Status / Rohs Status: Specific Sites Compliant

8-BIT A/D CONVERTER (ADC) (Cont’d)
4.10.6 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 software
reading the result in the DR register or writing to
the CSR register.
Bit 6 = Reserved. must always be cleared.
Bit 5 = ADON A/D Converter On
This bit is set and cleared by software.
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-
Table 30. ADC Register Map
COCO
Address
0: Conversion is not complete
1: Conversion can be read from the DR register
0: A/D converter is switched off
1: A/D converter is switched on
7
(Hex.)
0A
0B
ies according to the device. Refer to the device
pinout.
0
ADCCSR
Reset Value
ADCDR
Reset Value
Register
ADON
Name
0
COCO
CH3
D7
7
0
0
CH2
D6
6
0
0
-
CH1
CH0
ADON
0
D5
5
0
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
D4
4
0
0
-
Channel Pin*
D6
AIN10
AIN11
AIN12
AIN13
AIN14
AIN15
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
AIN9
CH3
D3
3
0
0
D5
ST72774/ST727754/ST72734
D4
CH2
D2
CH3
2
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
D3
CH2
CH1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
D2
D1
1
0
0
CH1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D1
125/144
CH0
D0
0
0
0
CH0
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0