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UPD16311GC-AB6 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD16311GC-AB6 1/8- to 1/16-DUTY FIP™ (VFD) CONTROLLER/DRIVER NEC
NEC => Renesas Technology NEC
UPD16311GC-AB6 Datasheet PDF : 20 Pages
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Key Matrix and Key-Input Data Storage RAM
The key matrix is of 12  4 configuration, as shown below.
KEY1
KEY2
KEY3
KEY4
PD16311
The data of each key is stored as illustrated below, and is read by a read command, starting from the least
significant bit.
KEY1…KEY4 KEY1…KEY4
Seg1/KS1
Seg2/KS2
Seg3/KS3
Seg4/KS4
Seg5/KS5
Seg6/KS6
Seg7/KS7
Seg8/KS8
Seg9/KS9
Seg11/KS11
Seg10/KS10
Seg12/KS12
Reading sequence
b0------------ b3 b4 ------------b7
When the most significant bit of data (Seg12 b7) has been read, the least significant bit of the next data (Seg1 b0) is
read.
LED Port
Data is written to the LED port by a write command, starting from the least significant bit of the port. When a bit of
this port is 0, the corresponding LED lights; when the bit is 1, the LED goes off. The data of bits 6 through 8 is
ignored.
MSB
LSB
− − − b4 b3 b2 b1 b0
Don't care
On power application, all the LEDs remain dark.
LED1
LED2
LED3
LED4
LED5
6
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