HD404459 Datasheet, PDF (26/122 Pages) Renesas Technology Corp – 4-bit HMCS400-series microcomputers

HD404459 Series
Serial Interrupt Request Flags (IFS: $023, Bit 0): Set when data transfer is completed or when data
transfer is suspended (table 15).
Table 15 Serial Interrupt Request Flag (IFS: $023, Bit 0)
IFS
Interrupt Request
0
No
1
Yes
Serial Interrupt Mask (IMS: $023, Bit 1): Prevents (masks) an interrupt request caused by the serial
interrupt request flag (table 16).
Table 16 Serial Interrupt Mask (IMS: $023, Bit 1)
IMS
Interrupt Request
0
Enabled
1
Disabled (masked)
Wakeup Interrupt Request Flag (IFWU: $003, Bit 2): Set by the falling edge of signals input to wakeup
(table 17).
Table 17 Wakeup Interrupt Request Flag (IFWU: $003, Bit 2)
IFWU
0
1
Interrupt Request
No
Yes
Wakeup Interrupt Mask (IMWU: $003, Bit 3): Prevents (masks) an interrupt request caused by the
wakeup interrupt request flag (table 18).
Table 18 Wakeup Interrupt Mask (IMWU: $003, Bit 3)
IMWU
0
1
Interrupt Request
Enabled
Disabled (masked)
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