UPD6121 Просмотр технического описания (PDF) - NEC => Renesas Technology

Номер в каталоге

Компоненты Описание

производитель

UPD6121

REMOTE CONTROL TRANSMISSION CMOS IC

NEC => Renesas Technology 

µPD6121, 6122

Figure 3-3. Example of Custom Code Setting for Ver II Specifications (µPD6121-002, 6122-002)

Configuration Example

CCS

KI/O0

VDD

KI/O1 KI/O2

VDD

KI/O3

KI/O4

KI/O5

KI/O6 KI/O7

VDD

VDD

Connection of any one line

: Connected

: Not connected

ROM3 selector

C2, C1 and C0 of the higher 8 bits of the custom code are fixed by connecting the CCS pin to KI/O0 to KI/

O7. Therefore, in the configuration example, they become 1 0 0 .

C0 C1 C2

C7, C6, C5, C4 and C3 of the higher 8 bits of the custom code are selected and fixed by the pull-up resistor

connected to KI/O6 and KI/O7 in four channels.

Pull-up resistor

C7

C6

C5

C4

C3

KI/O6

KI/O7

*

1

0

1

1

0

Disconnected Disconnected

0

0

1

1

1

Disconnected Connected

1

1

0

1

1

Connected Disconnected

1

1

1

1

1

Connected Connected

In this configuration example, C3 to C7 of the higher 8 bits of the custom code become 1 1 0 1 1 .

C3 C4 C5 C6 C7

The inversion/non-inversion of the lower 8 bits of the custom code’ is fixed by the bit of the external pull-

*

up resistor of KI/O0 to KI/O5.

External setting (Refer to Configuration Example)

Lower 8 bits of custom code’

10100000

C0’ C1’ C2’ C3’ C4’ C5’ C6’ C7’

Pull-up resistor bit

(KI/O0, KI/O2)

Bit for non-inversion of custom code is set

1: Non-inversion for C0 to C7

0: Inversion for C0 to C7

Caution C6’ and C7’ are fixed to 0.

9

Share Link: