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參數(shù)資料
| 型號： | UPD17233 |
| 廠商： | NEC Corp. |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機(jī)的小型通用紅外遙控器 |
| 文件頁數(shù)： | 56/92頁 |
| 文件大小： | 378K |
| 代理商： | UPD17233 |
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Data Sheet U14360EJ1V0DS00
μ
PD17230, 17231, 17232, 17233, 17234, 17235, 17236
56
Table 8-2. Operations After HALT Mode Release (2/2)
(b) HALT 02H
HALT Mode Released by:
Interrupt Status
Interrupt Enable Flag
Operations after HALT Mode Release
8-bit timer
DI
Disabled
Instructions are executed from the
instruction next to the HALT instruction.
Enabled
EI
Disabled
Enabled
Branches to interrupt vector address
8.2
HALT Instruction Execution Conditions
The HALT instruction can be executed, only under special conditions, as shown in Table 8-3, to prevent the program
from hangup.
If the conditions in Table 8-3 are not satisfied, the HALT instruction is treated as an NOP instruction.
Table 8-3. HALT Instruction Execution Conditions
Operand Value
Execution Conditions
0010B (02H)
When all interrupt request flags (IRQTM) of 8-bit timer are reset
1000B (08H)
<1> When interrupt request flag (IRQTH, IRQBTM, or IRQ) is reset, corresponding to interrupt whose
interrupt enable flag (IPTM, IPBTM, or IP) is set
<2> When high level is input to all P0A
0
-P0A
3
pins
<3> When P0B
0
-P0B
3
, P0C
0
-P0C
3
, and P0D
0
-P0D
3
are used as input pins and any of these goes high
Other than above
Setting prohibited
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