參數(shù)資料
型號: HD4074459
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer(4位單片微計(jì)算機(jī))
中文描述: 4位HMCS400系列微機(jī)(4位單片微計(jì)算機(jī))
文件頁數(shù): 22/120頁
文件大小: 692K
代理商: HD4074459
HD404459 Series
22
External Interrupt Masks (IM0, IM1, IM2, IM3, IMWU: $000, $001, $003, $022):
Prevent (mask)
interrupt requests caused by the corresponding external interrupt request flags (table 6).
Table 6
External Interrupt Masks (IM0–1M3, IMWU: $000, $001, $003, $022)
IM0–IM3, IMWU
Interrupt Request
0
Enabled
1
Disabled (masked)
Timer A Interrupt Request Flag (IFTA: $002, Bit 0):
Set by overflow output from timer A (table 7).
Table 7
Timer A Interrupt Request Flag (IFTA: $002, Bit 0)
IFTA
Interrupt Request
0
No
1
Yes
Timer A Interrupt Mask (IMTA: $002, Bit 1):
Prevents (masks) an interrupt request caused by the timer
A interrupt request flag (table 8).
Table 8
Timer A Interrupt Mask (IMTA: $002, Bit 1)
IMTA
Interrupt Request
0
Enabled
1
Disabled (masked)
Timer B Interrupt Request Flag (IFTB: $002, Bit 2):
Set by overflow output from timer B (table 9).
Table 9
Timer B Interrupt Request Flag (IFTB: $002, Bit 2)
IFTB
Interrupt Request
0
No
1
Yes
Timer B Interrupt Mask (IMTB: $002, Bit 3):
Prevents (masks) an interrupt request caused by the timer
B interrupt request flag (table 10).
Table 10
Timer B Interrupt Mask (IMTB: $002, Bit 3)
IMTB
Interrupt Request
0
Enabled
1
Disabled (masked)
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