ST72C334N2B6 STMicroelectronics, ST72C334N2B6 Datasheet - Page 79

• 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

SERIAL PERIPHERAL INTERFACE (Cont’d)
6.5.5 Low Power Modes
6.5.6 Interrupts
Note: The SPI interrupt events are connected to
the same interrupt vector (see Interrupts chapter).
They generate an interrupt if the corresponding
Enable Control Bit is set and the I-bit in the CC reg-
ister is reset (RIM instruction).
WAIT
HALT
SPI End of Transfer Event
Master Mode Fault Event
Mode
No effect on SPI.
SPI interrupt events cause the device to exit from WAIT mode.
SPI registers are frozen.
In HALT mode, the SPI is inactive. SPI operation resumes when the MCU is woken up by an interrupt with
“exit from HALT mode” capability.
Interrupt Event
Description
ST72334J/N, ST72314J/N, ST72124J
MODF
Event
SPIF
Flag
Control
Enable
SPIE
Bit
from
Wait
Exit
Yes
Yes
from
Halt
Exit
79/125
No
No