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參數(shù)資料
| 型號(hào)： | LC72F3661 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | CMOS IC Electronic tuning radio for car audio ETR Controller |
| 中文描述： | CMOS集成電路電子調(diào)諧電臺(tái)汽車音響ET受體控制器 |
| 文件頁(yè)數(shù)： | 10/15頁(yè) |
| 文件大?。?/td> | 125K |
| 代理商： | LC72F3661 |
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LC72F3661
No.0461-10/15
Continued from preceding page.
Pin name
Pin No.
I/O
Pin explanation
Equivalent circuit
LCTR
71
I
Universal counter (frequency or period measurement) and general-
purpose input shared function input port.
The IOS1 instruction is used for switching between the universal
counter and general-purpose input functions.
When used for frequency measurement :
The universal counter function is set up with the IOS1 instruction.
Set up LCTR frequency measurement mode with the UCS
instruction, and control operation with the UCC instruction.
Since this pin functions as an AC amplifier in this mode, the input
signal must be input with capacitor coupling.
When used for period measurement :
The universal counter function is set up with the IOS1 instruction.
Set up LCTR frequency measurement mode with the UCS
instruction, and control operation with the UCC instruction.
Since the bias feedback resistor is disconnected in this mode, the
input signal must be input with DC coupling.
When used as a general-purpose input pin :
The general-purpose input port function is set up with the IOS1
instruction.
Data is read from the port using the INR (b1) instruction.
Input is disabled in Backup mode. (The input pin will be pulled down.)
The universal counter function (HCTR frequency measurement mode)
is selected after a power on reset.
Voltage sense and general-purpose input shared function port.
This input circuit is designed with a low input threshold voltage.
When used as a voltage sense input :
The pin is used to test for power failures on the return from Backup
mode.
Application can test this condition using the internal SNS flip-flop.
The SNS flip-flop can be tested with the TST instruction.
(This usage requires external components, capacitors and resistors.
For the sample application circuit, see the user’s manual.)
When used as a general-purpose input port :
When used as a general-purpose input port the pin state can be
tested with the TST instruction.
Unlike the other input ports, input to this pin is not disabled in Backup
mode and after a power on reset. As a result, through currents must
be taken into account when designing applications that use this pin as
a general-purpose input.
Power supply monitor (with interrupt function)
This is designed with a high input threshold voltage.
This pin is normally connected to the ACC line and used for power off
detection.
When a power off state is detected, the HOLDON flag and the hold
interrupt request flag will be set.
To enter Backup mode, execute a CKSTP instruction when the HOLD
pin is low. Set this pin high to clear Backup mode.
System reset pin.
When the CPU is operating or in Halt mode, the system is reset when
this pin is held low for at least one machine cycle. Execution starts
with the PC pointing to location 0. At this time the SNS flip-flop is set.
A low level must be applied for at least 50ms when power is first
applied.
SNS
70
I
HOLD
69
I
RESET
68
I
Continued on next page.
ILC05539
ILC05539
ILC05540
ILC05536
PLL Stop instruction
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| LC72F3781 | CMOS IC Electronic tuning radio for car audio ETR Controller |
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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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| LC72F3781 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:CMOS IC Electronic tuning radio for car audio ETR Controller |
| LC72P32 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Time Programmable ROM Single-Chip PLL Plus Microcontroller |
| LC72P321 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Microcontroller + PLL with On-Chip One-Time PROM |
| LC72P338 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LC72P366 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Chip One-Time Programmable PROM Single-Chip PLL Controller |
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