參數(shù)資料
型號: M37160MF-XXXFP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8.86 MHz, MICROCONTROLLER, PDSO42
封裝: 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件頁數(shù): 115/131頁
文件大小: 1021K
代理商: M37160MF-XXXFP
Rev.1.01
2003.11.13
page 84 of 130
M37160M8/MA/MF-XXXSP/FP,M37160EFSP/FP
8.12 RESET CIRCUIT
When the oscillation of a quartz-crystal oscillator or a ceramic reso-
nator is stable and the power source voltage is 5 V ± 10 %, hold the
RESET pin at LOW for 2
s or more, then return to HIGH. Then, as
shown in Figure 8.12.2, reset is released and the program starts from
the address formed by using the content of address FFFF16 as the
high-order address and the content of the address FFFE16 as the
low-order address. The internal states of the microcomputer at reset
are shown in Figures 8.2.2 to 8.2.5.
An example of the reset circuit is shown in Figure 8.12.1.
The reset input voltage must be kept 0.9 V or less until the power
source voltage surpasses 4.5 V.
Fig.8.12.2 Reset Sequence
Fig.8.12.1 Example of Reset Circuit
Power source voltage 0 V
Reset input voltage 0 V
4.5 V
0.9 V
Power on
Vcc
RESET
Vss
Microcomputer
1
5
4
3
0.1
F
M51953AL
XIN
φ
RESET
Internal RESET
SYNC
Address
Data
32768 count of XIN
clock cycle (See note 3)
Reset address from the vector table
?
01, S
01, S-1 01, S-2
FFFE
FFFF
ADH,
ADL
?
ADL
ADH
Notes 1 : f(XIN) and f(
φ) are in the relation : f(XIN) = 2f (φ).
2 : A question mark (?) indicates an undefined state that
depends on the previous state.
3 : Immediately after a reset, timer 3 and timer 4 are
connected by hardware. At this time, “FF16” is set
in timer 3 and “0716” is set to timer 4. Timer 3 counts down
with f(XIN)/16, and reset state is released by the timer 4
overflow signal.
相關(guān)PDF資料
PDF描述
M37161MA-XXXFP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO42
M37161M8-XXXFP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO42
M37161MF-XXXSP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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M37161M8-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER