參數(shù)資料
型號(hào)： M37640E8FS
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機(jī)
文件頁(yè)數(shù)： 79/96頁(yè)
文件大?。?/td> 1477K
代理商： M37640E8FS
79
Ver 1.4
MITSUBISHI MICROCOMPUTERS
7640 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
1.26 RESET
This device is reset if the RESET pin is held low for a
minimum of 2 s while the supply voltage is set be-
tween 4.15 and 5.25V. When the RESET pin returns
high, the reset sequence commences (see Figure
1.99). To allow the oscillation source the time to sta-
bilize, a delay is generated by the countdown of Timer
1 and Timer 2 cascaded with FF
16
loaded in Timer 1
and 01
16
loaded in Timer 2. After the reset sequence
completes, program execution begins at the address
whose high-order byte is the contents of address
FFFA
16
and whose low-order byte is the contents of
address FFFB
16
.
Fig. 1.99. Internal Processing Sequence after RESET
Φ
out
SYNC
out
Address
Data
Reset
First
Opcode
Timer countdown from 01FF
16
FFFA
FFFB
ADH
ADL
ADL ADH
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