ST72T774J9B1 STMicroelectronics, ST72T774J9B1 Datasheet - Page 109

• 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

DDC INTERFACE (Cont’d)
Figure 67. Transfer Sequencing
Legend:
S=Start, P=Stop, A=Acknowledge, NA=Non-acknowledge
EVx=Event (with interrupt if ITE=1)
Figure 68. Event Flags and Interrupt Generation
Slave receiver:
Slave transmitter:
S Address
S Address
EV1: EVF=1, ADSL=1, cleared by reading SR1 register.
EV2: EVF=1, BTF=1, cleared by reading SR1 register followed by reading DR register.
EV3: EVF=1, BTF=1, cleared by reading SR1 register followed by writing DR register.
EV4: EVF=1, STOPF=1, cleared by reading SR2 register.
STOPF
BERR
ADSL
BTF
AF
A
A
EV1
EV1 EV3
Data1
Data1
A
EV2
A
Data2
EV3
Data2
ITE
A
EV2
A
EV3
.....
DataN
.....
ST72774/ST727754/ST72734
DataN
A
EV2
NA
INTERRUPT
EVF
P
EV3
EV4
P
EV4
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