參數(shù)資料
型號: M38869MFAHP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 10 MHz, MICROCONTROLLER, PQFP80
封裝: 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80
文件頁數(shù): 63/111頁
文件大?。?/td> 1644K
代理商: M38869MFAHP
55
3886 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION
MITSUBISHI MICROCOMPUTERS
PRELIMINAR
Y
for flash
memory
version
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to change.
RESET CIRCUIT
To reset the microcomputer, RESET pin should be held at an "L"
level for 2
s or more. Then the RESET pin is returned to an "H"
level (the power source voltage should be between 2.7 V and 5.5
V, and the oscillation should be stable), reset is released. After the
reset is completed, the program starts from the address contained
in address FFFD16 (high-order byte) and address FFFC16 (low-or-
der byte). Make sure that the reset input voltage is less than 0.54
V for VCC of 2.7 V.
Fig. 55 Reset sequence
Fig. 54 Reset circuit example
(Note)
0.2VCC
0V
Poweron
VCC
RESET
VCC
RESET
Power source
voltage detection
circuit
Power source
voltage
Reset input
voltage
Note : Reset release voltage ; Vcc=2.7 V
RESET
Internal
reset
Data
φ
Address
SYNC
XIN: 10.5 to 18.5 clock cycles
XIN
?
FFFC
FFFD
ADH,L
?
ADL
ADH
1: The frequency relation of f(XIN) and f(
φ) is f(XIN)=8 f(φ).
2: The question marks (?) indicate an undefined state that depends on the previous state.
Reset address from the vector table.
Notes
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