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AS1119

Datasheet - Regi s t er Description

Frame Time Register (0x02)

Every single frame in a movie is displayed for a certain time before the next frame is displayed. This time can be set within this register with 4

bits. The stated values in Table 18 are typical values. Per default this register is set to 0x00.

Display Option Register (0x03)

With the scan-limit it can be controlled how many digits are displayed in each matrix. When all 18 digits in the 2 matrix configuration are dis-

played, the display scan rate is 430Hz (typ.). If the number of digits to display is reduced, the update frequency is increased. Per default this reg-

ister is set to 0x07.

Table 18. Frame Time Register Format

0x02 Frame Time Register

Bit

Bit Name

Default

Access

Bit Description

7:4

-

00

n/a

3:0

Delay between frame

change in a movie

000

R/W

0000:play frame only one time

0001: 32.5ms

0010: 65ms

0011: 97.5ms

0100: 130ms

0101: 162.5ms

0110: 195ms

0111: 227.5ms

1000: 260ms

1001: 292.5ms

1010: 325ms

1011:357.5ms

1100: 390ms

1101: 422.5ms

1110: 455ms

1111: 487.5ms

Table 19. Display Option Register Format

0x03 Display Option Register

Bit

Bit Name

Default

Access

Bit Description

7-

0

n/a

6

intensity setting

0R/W

0: use intensity setting of frame 0 for all other frames

1: set the intensity of each frame independently

5

start with blink

0R/W

0: start blinking with LED on

1: start blinking with LED off

4

blink period

0R/W

0: 1.5s

1: 3s