參數(shù)資料
型號: M34514M8
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述: 單芯片4位微機的CMOS
文件頁數(shù): 59/106頁
文件大小: 1304K
代理商: M34514M8
59
4513/4514 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
16
Voltage comparator function
When the voltage comparator function is valid with the voltage
comparator control register Q3, it is operating even in the RAM
back-up mode. Accordingly, be careful about such state because
it causes the increase of the operation current in the RAM back-
up mode.
In order to reduce the operation current in the RAM back-up
mode, invalidate (bits 2 and 3 of register Q3 = “0”) the voltage
comparator function by software before the POF instruction is ex-
ecuted.
Also, while the voltage comparator function is valid, current is al-
ways consumed by voltage comparator. On the system required
for the low-power dissipation, invalidate the voltage comparator
when it is unused by software.
Register Q3
Bits 0 and 1 of register Q3 can be only read. Note that they can-
not be written.
Reading the comparison result of voltage comparator
Read the voltage comparator comparison result from register Q3
after the voltage comparator response time (max. 20
μ
s) is
passed from the voltage comparator function become valid.
17
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