ST72C171 datasheet(42/152 Pages) STMICROELECTRONICS

No de pièce	ST72C171

Description	8-BIT MCU with 8K FLASH, ADC, WDG, SPI, SCI, TIMERS SPGAs Software Programmable Gain Amplifiers, OP-AMP

PDF	152 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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ST72C171

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OP-AMP MODULE (Cont’d)

7.3.7 Low Power Modes

Note: Low Power modes have no effect on the SPGAs & the Op-Amp. They can be switched off to reduce

the power consumption of the ST7 (OAxON bits).

7.3.8 Interrupts

* The interrupt event occurs when the OAxP bit equals the OAxV bit value.

Note: The SPGA interrupt events are connected to 2 interrupt vectors (see Interrupts chapter). These

events generate an interrupt if the corresponding Enable Control Bit is set and the interrupt mask in the

CC register is reset (RIM instruction).

Mode

Description

WAIT

No effect on op-amp.

SPGA interrupts cause the device to exit from WAIT mode.

HALT

No effect on op-amp.

SPGA interrupts cause the device to exit from HALT mode.

Interrupt Event

Event

Flag

Enable

Control

Bit

Exit

from

Wait

Exit

from

Halt

Op-Amp 1 output in comparator mode equals to OA1P bit value

NA*

OA1IE

Yes

Op-Amp 2 output in comparator mode equals to OA2P bit value

NA*

OA2IE

Yes

ST72C171 Fiches technique(PDF) 42 Page - STMicroelectronics