SC16315

The data of each key is stored as illustrated below, and is read with the read command, starting from the least

significant bit.

KEY1

KEY2 KEY1

KEY2 KEY1

KEY2

KEY1

KEY2

Seg1/KS1

Seg2/KS2

Seg3/KS3

Seg4/KS4

Seg5/KS5

Seg6/KS6

Seg7/KS7

Seg8/KS8

Seg9/KS9

Seg10/KS10

Seg11/KS11

Seg12/KS12

Seg13/KS13

Seg14/KS14

Seg15/KS15

Seg16/KS16

Reading sequence

b0 ------- b1

b2 ------- b3

b4-------- b5

b6 -------- b7

3. LED PORT

Data is written to the LED port with command, starting from the least port’s least significant bit. ”L” output when

the bit of this port is 0, and “H” output when the bit is 1. The data of bits after the 5

b3

b2

b1

b0

MSB

LSB

LED1

LED3

LED2

LED4

Don't care

Remark: On power application, all the LED ports are “L” output.

4. COMMANDS

Commands set the display mode and status of the FIP driver.

The first 1 byte input to the SC16315 through the DIN pin after the STB pin has fallen is regarded as a command.

If STB is set high while commands/data are transmitted, serial communication is initialized, and the

commands/data being transmitted are invalid (however, the commands/data previously transmitted remain valid).

(1) Display mode setting commands

These commands initialize the SC16315 and select the number of segments and grids (1/4- to 1/12- duty, 16

segments to 24 segments).

When these commands are executed, the display and key scanning are forcibly turned off. Therefore, in order to

resume display, the display command “ON” must be executed. If the same mode is selected, however, nothing

will happen.

b2

b1

b0

MSB

LSB

00

Display mode settings

0000: 4 digits, 24 segments

0001: 5 digits, 23 segments

0010: 6 digits, 22 segments

0011: 7 digits, 21 segments

0100: 8 digits, 20 segments

0101: 9 digits, 19 segments

0110: 10 digits, 18 segments

0111: 11 digits, 17 segments

Don't care

1xxx: 12 digits, 16 segments

On power application, the 12-digit, 16-segment mode is selected.

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

REV:1.0

2008.12.16

Http: www.silan.com.cn

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