10-BIT ANALOG TO DIGITAL CONVERTER (ADC)
REGISTER DESCRIPTION (Cont’d)
Bit 5 = ECI: End of Conversion Interrupt Enable.
This bit masks the End of Conversion interrupt re-
quest.
0: Mask End of Conversion interrupts
1: Enable End of Conversion interrupts
INTERRUPT VECTOR REGISTER (AD_IVR)
R255 - Read/Write
Register Page: 63
Reset Value: xxxx xx10 (x2h)
7
0
0
V7
V6
V5
V4
V3
V2
W1
Bit 4 = AWDI: Analog Watchdog Interrupt Enable.
This bit masks or enables the Analog Watchdog
interrupt request.
0: Mask Analog Watchdog interrupts
1: Enable Analog Watchdog interrupts
Bits 7:2 = V[7:2]: ADC Interrupt Vector.
This vector should be programmed by the user to
point to the first memory location in the Interrupt
Vector table containing the starting addresses of
the ADC interrupt service routines.
Bit 3 = Reserved.
Bits 2:0 = PL[2:0]: ADC Interrupt Priority Level.
These three bits are used to select the Interrupt
priority level for the ADC.
Bit 1 = W1: Word Select.
This bit is set and cleared by hardware, according
to the ADC interrupt source.
0: Interrupt source is the Analog Watchdog, point-
ing to the lower word of the ADC interrupt serv-
ice block (defined by V[7:2]).
1:Interrupt source is the End of Conversion inter-
rupt, thus pointing to the upper word.
Note: When two requests occur simultaneously,
the Analog Watchdog Request has priority over
the End of Conversion request, which is held
pending.
Bit 0 = Reserved, forced by hardware to 0.
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STMICROELECTRONICS [ ST ]
