ST72C334N2B6 STMicroelectronics, ST72C334N2B6 Datasheet - Page 90

• 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

ST72334J/N, ST72314J/N, ST72124J
SERIAL COMMUNICATIONS INTERFACE (Cont’d)
6.6.5 Low Power Modes
6.6.6 Interrupts
The SCI interrupt events are connected to the
same interrupt vector (see Interrupts chapter).
90/125
Mode
WAIT
HALT
Transmit Data Register Empty
Transmission Complete
Received Data Ready to be Read
Overrrun Error Detected
Idle Line Detected
In Halt mode, the SCI stops transmitting/receiving until Halt mode is exited.
Description
No effect on SCI.
SCI interrupts cause the device to exit from Wait mode.
SCI registers are frozen.
Interrupt Event
These events generate an interrupt if the corre-
sponding Enable Control Bit is set and the I-bit in
the CC register is reset (RIM instruction).
Event
RDRF
TDRE
Flag
IDLE
OR
TC
Control
Enable
TCIE
RIE
ILIE
Bit
TIE
from
Wait
Exit
Yes
Yes
Yes
Yes
Yes
from
Halt
Exit
No
No
No
No
No