UPD17006AGF-012-3B9 查看數據表（PDF） - NEC => Renesas Technology

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UPD17006AGF-012-3B9

4-BIT SINGLE-CHIP MICROCONTROLLER WITH PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOBILE FM, MW, AND LW RADIOS

NEC => Renesas Technology 

µPD17006AGF-011

2.2 Description of Analog Key Matrix

Symbol

M1

M2

M3

M4

M5

Functional Description

(1) Normal mode

These keys operate as preset memory call and write keys in tuner mode.

One key can be independently assigned to preset memories storing five stations in each of the

FM1, FM2, FM3, and AM bands, totaling 20 stations.

If a station written to preset memory is an FM-band RDS broadcasting station, the PI code of that

station is also written at the same time.

If a station is called for which RDS broadcasting is stored, AF selection is performed by using

the AF list of preset 8 stations. If RDS broadcasting still cannot be received, a PI seek operation

is performed in the up direction. If SEEK/MAN DOWN key is pressed during this seek operation, a

normal seek operation is performed and continued until a station is found. To stop the seek

operation, press the SEEK/MAN UP key.

During a time or PS display, the frequency display is switched to.

Operation

Description

q When MESEL switch of initial setting diode = 1 (shorted with diode)

Preset memory is write-enabled for about 5 seconds when

ME

key

is pressed. By pressing any of the

M1

to

M5

keys during

this period, the frequency currently being received is written to preset memory

corresponding to the pressed key.

Frequency cannot be written if the

ME

key is held down.

When frequency is written, a beep sound is issued for about 40 ms.

Write

q When MESEL switch of initial setting diode = 0 (open)

By pressing any of

M1

to

M5

keys for about 2 seconds,

frequency currently being received is written to preset memory correspond-

ing to the pressed key.

ME

key is invalid.

Same operation is performed when same preset memory key is pressed while

contents of current preset memory are being received.

When frequency is written, a beep sound is issued for about 40 ms.

q When MESEL switch of initial setting diode = 1 (shorted with diode)

By pressing any of the

M1

to

M5

keys when preset

memory is not write-enabled, contents of preset memory corresponding to

the pressed key are called.

Call

q When MESEL switch of initial setting diode = 0 (open)

By pressing any of the

M1

to

M5

keys and then releasing

the key within seconds, contents of preset memory corresponding to the

pressed key are called. When same preset memory key is called while

contents of preset memory are currently called, a beep sound is issued for

about 40 ms.

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