參數(shù)資料
型號： M34559G6
廠商： Renesas Technology Corp.
英文描述： SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述： 單芯片4位微機(jī)的CMOS
文件頁數(shù)： 54/148頁
文件大?。?/td> 1732K
代理商： M34559G6
Rev.1.04
REJ03B0188-0104
Aug 23, 2007
Page 54 of 146
4559 Group
(2) Voltage drop detection circuit flag (VDF)
Voltage drop detection circuit flag (VDF) is set to “1” when the
supply voltage goes the skip occurrence voltage (V
SKIP
) or less.
Moreover, voltage drop detection circuit flag (VDF) is cleared to
“0” when the supply voltage goes the skip occurrence voltage
(V
SKIP
) or more. The state of the voltage drop detection circuit
flag (VDF) can be examined with the skip instruction (SNZVD).
Even when the skip instruction is executed, the voltage drop
detection circuit flag is not cleared to “0”.
Refer to the electrical characteristics for skip occurrence voltage
value.
(3) Voltage drop detection circuit reset
System reset is performed when the supply voltage goes the reset
occurrence voltage (V
RST
-
) or less.
When the supply voltage goes reset release voltage (V
RST
+
) or
more, the oscillation circuit goes to be in the operating enabled
state and system reset is released .
Refer to the electrical characteristics for reset occurrence value
and reset release voltage value.
Fig 54. Voltage drop detection circuit operation waveform
Fig 55. V
DD
and V
RST
-
(4) Note on voltage drop detection circuit
The voltage drop detection circuit detection voltage of this
product is set up lower than the minimum value of the supply
voltage of the recommended operating conditions.
When the supply voltage of a microcomputer falls below to the
minimum value of recommended operating conditions and
regoes up, depending on the capacity value of the bypass
capacitor added to the power supply pin, the following case may
cause program failure (Figure 55);
supply voltage does not fall below to V
RST
-
, and its voltage re-
goes up with no reset.
In such a case, please design a system which supply voltage is
once reduced below to V
RST
-
and re-goes up after that.
V
DD
Voltage drop detection circuit
flag (VDF)
V
RST+
(reset release voltage)
V
RST
-
(reset occurrence voltage)
Voltage drop
detection circuit
reset signal
Note 1: Microcomputer starts operation after on-chip oscillator clock is counted 1376 times.
(Note 1)
V
SKIP
(skip occurrence voltage)
V
DD
V
RST+
V
RST
-
V
DD
V
RST+
V
RST
-
Recommended operating condition
min.value
Normal operation
Reset
No reset
Program failure may occur.
Recommended operating condition
min.value
相關(guān)PDF資料
PDF描述
M34571G4 SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M3488Q1 256 x 256 DIGITAL SWITCHING MATRIX
M3488 256 x 256 DIGITAL SWITCHING MATRIX
M3488B1 256 x 256 DIGITAL SWITCHING MATRIX
M3493B2 CMOS 12 X 8 CROSSPOINTWITH CONTROL MEMORY
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M34559G6FP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34559G6-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M3455AG8FP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M3455AG8-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M3455AGCFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*