參數資料
型號: HD404614
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer
中文描述: 4位單片機
文件頁數: 21/89頁
文件大?。?/td> 358K
代理商: HD404614
HD404618 Series
21
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 shown in table 4.
Table 4 Interrupt Enable Flag
IE
Interrupt Enabled/Disabled
0
Disabled
1
Enabled
External Interrupts (
INT
0
,
INT
1
):
Specified by port mode register A (PMRA: $004).
The
INT
1
input can be used as a clock signal input to timer B. Timer B increments at each falling edge of
the
INT
1
input. When using
INT
1
as a timer B external event input, external interrupt mask IM1 must be
set to prevent the
INT
1
interrupt request from being accepted (see table 6).
To detect the edge of
INT
0
or
INT
1
, more than two instruction cycle times are required (2t
cyc
or 2t
subcyc
).
External Interrupt Request Flags (IF0: $000, Bit 2; IF1: $001, Bit 0):
Set at the falling edge of the
INT
0
and
INT
1
inputs as shown in table 5.
Table 5 External Interrupt Request Flags
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 shown in table 6.
Table 6 External Interrupt Masks
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 shown in
table 7.
Table 7 Timer A Interrupt Request Flag
IFTA
Interrupt Request
0
No
1
Yes
相關PDF資料
PDF描述
HD404614FS 4-Bit Single-Chip Microcomputer
HD404614H 4-Bit Single-Chip Microcomputer
HD404614TF 4-Bit Single-Chip Microcomputer
HD404616 4-Bit Single-Chip Microcomputer
HD404616FS 4-Bit Single-Chip Microcomputer
相關代理商/技術參數
參數描述
HD404614FS 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
HD404614H 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
HD404614TF 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
HD404616 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer
HD404616FS 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer