參數(shù)資料
型號: HD40A4369
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer(4位單片微計算機)
中文描述: 4位HMCS400系列微機(4位單片微計算機)
文件頁數(shù): 23/115頁
文件大小: 710K
代理商: HD40A4369
HD404369 Series
23
Interrupt Enable Flag (IE: $000, Bit 0):
Controls the entire interrupt process. It is reset by the interrupt
processing and set by the RTNI instruction, as listed in table 4.
Table 4
Interrupt Enable Flag (IE: $000, Bit 0)
IE
Interrupt Enabled/Disabled
0
Disabled
1
Enabled
External Interrupts (
INT
0
,
INT
1
):
Two external interrupt signals.
External Interrupt Request Flags (IF0: $000, Bit 2; IF1: $001, Bit 0):
IF0 and IF1 are set at the rising
edge of signals input to
INT
0
and
INT
1
, as listed in table 5.
Table 5
External Interrupt Request Flags (IF0: $000, Bit2; IF1: $001, Bit 0)
IF0, IF1
Interrupt Request
0
No
1
Yes
External Interrupt Masks (IM0: $000, Bit 3; IM1: $001, Bit 1):
Prevent (mask) interrupt requests
caused by the corresponding external interrupt request flags, as listed in table 6.
Table 6
External Interrupt Masks (IM0: $000, Bit 3; IM1: $001, Bit 1)
IM0, IM1
Interrupt Request
0
Enabled
1
Disabled (masked)
Timer A Interrupt Request Flag (IFTA: $001, Bit 2):
Set by overflow output from timer A, as listed in
table 7.
Table 7
Timer A Interrupt Request Flag (IFTA: $001, Bit 2)
IFTA
Interrupt Request
0
No
1
Yes
Timer A Interrupt Mask (IMTA: $001, Bit 3):
Prevents (masks) an interrupt request caused by the timer
A interrupt request flag, as listed in table 8.
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