參數(shù)資料
型號(hào): M37640M8-XXXFP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP80
封裝: 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件頁(yè)數(shù): 77/96頁(yè)
文件大小: 1477K
代理商: M37640M8-XXXFP
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
ms 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 FF16 loaded in Timer 1
and 0116 loaded in Timer 2. After the reset sequence
completes, program execution begins at the address
whose high-order byte is the contents of address
FFFA16 and whose low-order byte is the contents of
address FFFB16.
Fig. 1.99. Internal Processing Sequence after RESET
Φ
out
SYNCout
Address
Data
?
Reset
First
Timer countdown from 01FF
16
?
FFFA
FFFB
?
ADH
ADL
ADL ADH
Opcode
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