PCA9620H/Q900/1,51 NXP Semiconductors, PCA9620H/Q900/1,51 Datasheet - Page 43

• Manufacturer Part Number: PCA9620H/Q900/1,51
• Description: LCD Drivers 480 SEGMENT LCD SEGMENT DRIVER
• Manufacturer: NXP Semiconductors

Specifications of PCA9620H/Q900/1,51

• Number Of Segments: 60
• Maximum Clock Frequency: 14500 Hz
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 105 C
• Package / Case: LQFP-80
• Maximum Supply Current: 200 uA
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935291899518

NXP Semiconductors
PCA9620
Product data sheet
7.9.1.2 RAM filling in 1:2 multiplex drive mode
7.9.1.3 RAM filling in 1:4 multiplex drive mode
In the 1:2 multiplex drive mode the eight transmitted data bits are placed in four
successive display RAM columns of two rows (see
In order to fill the whole two RAM rows 15 bytes need to be sent to the PCA9620. After the
last byte sent the data pointer is wrapped around to column 0 to start a possible RAM
content update (see
the data pointer, then all the bits in the byte will be written correctly.
In the 1:4 multiplex drive mode the eight transmitted data bits are placed in two
successive display RAM columns of four rows (see
Fig 32. Discarded bits and data pointer wrap around at the end of data transmission
Fig 33. Display RAM filling order in 1:2 multiplex drive mode
Fig 34. Data pointer wrap around in 1:2 multiplex drive mode
display RAM rows/
data pointer
backplane outputs
display RAM
(BP)
rows
0 a7 a6 a5 a4 a3 a2 a1 a0
0
All information provided in this document is subject to legal disclaimers.
0
1
display RAM
1
data pointer
b7
b6
0
Figure
2
b5
b4
1
Rev. 1 — 9 December 2010
3
b3
b2
2
display RAM columns/segment outputs (S)
4
b0
b1
0
3
1
34). Even if a data byte is transmitted during the wrapping of
5
b0
b1
0
4
6
1
5
7
2
6
columns
3
7
4
wrap around
Universal LCD driver for low multiplex rates
5
48 49 50 51 52
f7 f6 f5 f4 f3 f2 f1 f0 g7 g6 g5 g4 g3 g2 g1 g0
6
wrap around
55 56 57 58 59
7
Figure
Figure
53 54 55 56 57 58 59
55 56 57 58 59
33).
35).
b7
b6
MSB
013aaa288
b7
b5
b4
transmitted data byte
b6
b3
b2
PCA9620
© NXP B.V. 2010. All rights reserved.
b5
b4
b3
discarded
013aaa287
b2
013aaa264
b1
43 of 71
LSB
b0