ST72334J4T(2003) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72334J4T
(Rev.:2003)

8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES

STMicroelectronics 

ST72334J/N, ST72314J/N, ST72124J

SERIAL PERIPHERAL INTERFACE (Cont’d)

14.4.5 Low Power Modes

Mode

WAIT

HALT

Description

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.

14.4.6 Interrupts

Interrupt Event

SPI End of Transfer Event

Master Mode Fault Event

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 interrupt mask in

the CC register is reset (RIM instruction).

Event

Flag

SPIF

MODF

Enable

Control

Bit

SPIE

Exit

from

Wait

Yes

Yes

Exit

from

Halt

No

No

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