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參數(shù)資料
| 型號： | M34282M2-XXXGP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 1 MHz, MICROCONTROLLER, PDSO20 |
| 封裝： | 0.225 INCH, 0.65 MM PITCH, PLASTIC, SSOP-20 |
| 文件頁數(shù)： | 11/71頁 |
| 文件大?。?/td> | 547K |
| 代理商： | M34282M2-XXXGP |
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Rev.1.33
Mar 18, 2004
page 17 of 67
4282 Group
Fig. 18 Reset release timing
RESET FUNCTION
The 4282 Group has the power-on reset circuit, though it does
not have RESET pin. System reset is performed automatically
at power-on, and software starts program from address 0 in page
0.
In order to make the built-in power-on reset circuit operate
efficiently, set the voltage rising time until VDD= 0 to 2.2 V is
obtained at power-on 1ms or less.
Fig. 19 Power-on reset circuit example
f(XIN)
Internal reset signal
f(XIN) 16384 pulses
Software operation starts
(address 0 in page 0)
“H”
“L”
VDD
Internal reset signal
Power-on reset circuit
Voltage drop detection circuit
Watchdog timer output
Power-on reset circuit
output voltage
Reset state
Internal reset signal
Reset released
Power-on
(1) Internal state at reset
Table 6 shows port state at reset, and Figure 20 shows internal
state at reset (they are retained after system is released from
reset).
The contents of timers, registers, flags and RAM except shown
in Figure 20 are undefined, so set the initial value to them.
(2) Note on power-on reset
Under the following condition, the system reset occurs by the
built-in the power-on reset circuit of this product;
- when the supply voltage (VDD) rises from 0 V to 2.2 V, within 1 ms.
Also, note that system reset does not occur under the following
conditions;
- when the supply voltage (VDD) rises from the voltage higher
than 0V, or
- when it takes more than 1 ms for the supply voltage (VDD) to
rise from 0 V to 2.2 V.
Table 6 Port state at reset
Name
D0–D3
D4–D7
G0–G3
E0, E1
CARR
State at reset
High impedance state
High impedance state (Pull-down transistor OFF)
“L” output
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PDF描述 |
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| M34283G2-XXXGP | 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20 |
| M34506M4-XXXFP | 4-BIT, MROM, 4.4 MHz, MICROCONTROLLER, PDSO20 |
| M34507M4-XXXFP | 4-BIT, MROM, 4.4 MHz, MICROCONTROLLER, PDSO24 |
| M34524MC-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP64 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34282T5-OPT | 制造商:Renesas Electronics Corporation 功能描述:DEV OPTION BOARD FOR 4282 GROUP/PC4400 - Boxed Product (Development Kits) |
| M34283 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34283G2GP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34283G2GP#U1 | 制造商:Renesas Electronics Corporation 功能描述:MICROCONTROLLER |
| M34283G2-XXXGP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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