HMS87C5216 ETC1 [List of Unclassifed Manufacturers], HMS87C5216 Datasheet - Page 52

• Manufacturer Part Number: HMS87C5216
• Description: CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER FOR UR(Universal Remocon) & WIRELESS KEYBOARD
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

HMS87C5216
(1) Selection of Interrupt by IP3-IP0
The condition allow for accepting interrupt is set state of the in-
terrupt mask enable flag and
(2) Interrupt Timing
Figure 13-2 Interrupt Enable Accept Timing
IMOD
CLOCK
SYNC
7
IP3
-
0
0
0
0
0
0
0
1
1
1
1
1
Interrupt Request Sampling
A command before interrupt
IM1
-
0
0
1
IP2
0
0
0
1
1
1
1
0
0
0
0
1
Table 13-1 Interrupt Selection by IP3 - IP0
IM1
IM0
Interrupt Mode Register
0
1
*
IP1
0
1
1
0
0
1
1
0
0
1
1
0
Assigning by interrupt accept mode bit
IM0
fixed by hardware
changeable by IP3~ IP0
Interrupt is inhibited
IP0
1
0
1
0
1
0
1
0
1
0
1
0
IP3
IP0 registers become all ``0``.
*Interrupt Request sampling time
the interrupt enable bit must be ``1``. In Reset state, these IP3 -
KSCNR (Key Scan)
INT1R (External interrupt 1)
INT2R (External interrupt 2)
Reserved
T0R (Timer 0)
T1R (Timer 1)
T2R (Timer 2)
Reserved
Reserved
WDTR (Watch Dog Timer)
BITR (Basic Interval Timer)
Reserved
Priority
IP2
interrupt process step
Selection Interrupt
IP1
IP0
0
R/W <00CA h>
SEP. 2004 Ver 1.01