參數(shù)資料
型號(hào)： UPD65891
英文描述： CMOS-N5 Family Pamphlet | Pamphlet[08/2001]
中文描述： CMOS的家庭手冊(cè)北5 |小冊(cè)子[08/2001]
文件頁(yè)數(shù)： 23/64頁(yè)
文件大?。?/td> 399K
代理商： UPD65891
23
μ
PD64A, 65
Data Sheet U14380EJ2V0DS00
5.2 Standby Mode Setup and Release
The standby mode is set with the HALT #b
3
b
2
b
1
b
0
B instruction for both STOP mode and HALT mode. For the
standby mode to be set, the status flag (F) is required to have been cleared (to 0).
The standby mode is released by the release condition specified with the reset (POC) or the operand of HALT
instruction. If the standby mode is released, the status flag (F) is set (to 1).
Even when the HALT instruction is executed in the state that the status flag (F) has been set (to 1), the standby
mode is not set. If the release condition is not met at this time, the status flag is cleared (to 0). If the release condition
is met, the status flag remains set (to 1).
Even in the case when the release condition has been already met at the point that the HALT instruction is
executed, the standby mode is not set. Here, also, the status flag (F) is set (to 1).
Caution Depending on the status of the status flag (F), the HALT instruction may not be executed. Be
careful about this. For example, when setting HALT mode after checking the key status with
the STTS instruction, the system does not enter HALT mode as long as the status flag (F)
remains set (to 1) thus sometimes performing an unintended operation. In this case, the
intended operation can be realized by executing the STTS instruction immediately after timer
setting to clear (to 0) the status flag.
Example
STTS
#03H
;To check the K
I
pin status.
MOV
STTS
T, #0xxH
#05H
(During this time, be sure not to execute an instruction that may set the status flag.)
#05H
;To set HALT mode
;To set the timer
;To clear the status flag
HALT
Table 5-2. Addresses Executed after Standby Mode Release
Release Condition
Address Executed after Release
Reset
0 address
Release condition shown in Table 5-3
The address following the HALT instruction
…
…
相關(guān)PDF資料
PDF描述
UPD65892 CMOS-N5 Family Block Library Ver.5.0 | Block Library[12/2001]
UPD65893 CMOS-N5 Family Design Manual Ver.6.0 | Design Manual[02/2002]
UPD65943 CMOS Gate Array.Embedded Array Ver.2.0 for Package | Design Manual[05/2003]
UPD65944 CMOS-9HD Family.EA-9HD Family Block Library Ver.6.0 | Block Library[12/2000]
UPD65945 CMOS Gate Array.Embedded Array Ver.2.0 for Package | Design Manual[05/2003]
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD65892 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:CMOS-N5 Family Block Library Ver.5.0 | Block Library[12/2001]
UPD65893 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:CMOS-N5 Family Design Manual Ver.6.0 | Design Manual[02/2002]
UPD65907GL-012NMU 制造商:NEC Electronics Corporation 功能描述:
UPD65943 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:CMOS Gate Array.Embedded Array Ver.2.0 for Package | Design Manual[05/2003]
UPD65944 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:CMOS-9HD Family.EA-9HD Family Block Library Ver.6.0 | Block Library[12/2000]
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