DS80C320-MCG Datasheet, PDF (52/175 Pages) Dallas Semiconductor – High-Speed Microcontroller User Guide

Accumulator (A or ACC)
7
6
SFR E0h ACC.7 ACC.6
RW-0 RW-0
5
ACC.5
RW-0
4
ACC.4
RW-0
High-Speed Microcontroller User’s Guide
3
ACC.3
RW-0
2
ACC.2
RW-0
1
ACC.1
RW-0
0
ACC.0
RW-0
R=Unrestricted Read, W=Unrestricted Write, -n=Value after Reset
ACC.7-0
Bits 7-0
Accumulator. This register serves as the accumulator for arithmetic operations.
It is functionally identical to the accumulator found in the 80C32.
Extended Interrupt Enable (EIE)
7
6
5
SFR E8h
-
-
ERTCI
RW-0
4
EWDI
RW-0
3
EX5
RW-0
2
EX4
RW-0
R=Unrestricted Read, W=Unrestricted Write, -n=Value after Reset
1
EX3
RW-0
0
EX0
RW-0
Bit 7-0
ERTCI
Bit 5
EWDI
Bit 4
EX5
Bit 3
EX4
Bit 2
EX3
Bit 1
EX2
Bit 0
Reserved. Read data will be indeterminate.
Real Time Clock Interrupt Enable. This bit enables/disables the real-time
clock interrupt on the DS87C530. This bit will read 0 on all other devices.
0 = Disable the real-time clock interrupt.
1 = Enable interrupt requests generated by the real-time clock.
Watchdog Interrupt Enable. This bit enables/disables the watchdog interrupt.
0 = Disable the watchdog interrupt.
1 = Enable interrupt requests generated by the watchdog timer.
External Interrupt 5 Enable. This bit enables/disables external interrupt 5.
0 = Disable external interrupt 5.
1 = Enable interrupt requests generated by the INT5 pin.
External Interrupt 4 Enable. This bit enables/disables external interrupt 4.
0 = Disable external interrupt 4.
1 = Enable interrupt requests generated by the INT4 pin.
External Interrupt 3 Enable. This bit enables/disables external interrupt 3.
0 = Disable external interrupt 3. 1 = Enable interrupt requests generated by the
INT3 pin.
External Interrupt 2 Enable. This bit enables/disables external interrupt 2.
0 = Disable external interrupt 2.
1 = Enable interrupt requests generated by the INT2 pin.
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