參數(shù)資料
型號： M38837G6HP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝： 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80
文件頁數(shù)： 59/81頁
文件大小： 766K
代理商： M38837G6HP
Rev.1.00
Oct 26, 2004
page 62 of 79
3883 Group
RESET CIRCUIT
____________
To reset the microcomputer, RESET pin should be held at an “L”
level for 16 XIN cycle or more. (When the power source voltage
should be between 3.3V
± 0.3V and the oscillation should be
____________
stable.) Then the RESET pin set to “H”, the reset state is released.
After the reset is completed, the program starts from the address
contained in address FFFD16 (high-order byte) and address
FFFC16 (low-order byte). Make sure that the reset input voltage is
less than 0.6 V for VCC of 3.0 V.
Fig. 63 Reset sequence
Fig. 62 Reset circuit example
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 data that depends on the previous state.
Reset address from the vector table.
Notes
(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=3.0 V
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M3883-BK001 制造商:Alpha Wire 功能描述:
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