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參數(shù)資料
| 型號： | UPD6124A |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION |
| 中文描述： | 4位單片機的遙控傳輸 |
| 文件頁數(shù)： | 17/36頁 |
| 文件大?。?/td> | 172K |
| 代理商： | UPD6124A |
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μ
PD6124A, 6600A
17
16. LOW-VOLTAGE DETECTOR (RESET) CIRCUIT
The
μ
PD6124A and 6600A are internally provided with the low-voltage detector (reset) circuit, in order to prevent
program hang-up.
When V
DD
goes down to 1 V or below, an internal reset signal is generated. In the reset condition, a low level is
output to the S-OUT pin.
Reset circuit
Internal reset signal
AC pin
To S-OUT pin
Caution
The low-voltage detector circuit starts operating at a voltage ranging from 1 to 2.2 V. Hence, if the
supply voltage is 2 V or lower, the program counter may hang up before the low-voltage detector
circuit operates.
17. MASK OPTIONS (PLA DATA)
The following items can be selected by mask option selection:
Provide/not provide K
I
, S-IN pin pull-down resistor
Carrier duty selection (1/2, 1/3) at f
OSC
/12
Hang-up detection specification
Mask option data should be registered at the object code end.
BIT ASSIGNMENT BY SWITCH SELECTION
0
1
2
7
K
0
K
ALL
6
K
0
HALT
S-IN
5
K
0
HALT
K
4
K
Duty
selection
HALT
K
A
Note
I3
I2
I1
I0
I
I/O
I/O
3
0
2
0
1
S-IN
pull-down
resistor
0
0
MSB
LSB
K
I
pull-down resistor
Corresponding
Portion
Hang-up detection
Duty
S-IN
0
0
Note
The setting (bit) positions differ from the
μ
PD6125A and 6126A.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UPD6124ACS | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION |
| UPD6124AGS | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION |
| UPD6125A | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION |
| UPD6125ACA | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION |
| UPD6125AG | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION |
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