PCA9620H NXP [NXP Semiconductors], PCA9620H Datasheet - Page 9

• Manufacturer Part Number: PCA9620H
• Description: Universal LCD driver for low multiplex rates
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCA9620
Product data sheet
7.1.11 Command: frame-frequency
Table 15.
With the frame-frequency command the frame frequency and the output clock frequency
can be configured.
Table 16.
Table 17.
[1]
[2]
[3]
Bit
7 to 6
5 to 0
Bit
7 to 5
4 to 0
F[4:0]
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100, 10101
10110, 10111
11000 to 11111
Nominal frame frequency calculated for the default clock frequency of 9600 Hz.
Duty cycle definition: % HIGH-level time : % LOW-level time.
Default value.
[3]
Symbol
-
P[5:0]
Symbol
-
F[4:0]
Load-data-pointer - load data pointer command bit description
Frame frequency - frame frequency and output clock frequency command bit
description
Frame frequency values
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 9 December 2010
Nominal frame
frequency, f
60
70
80
91
100
109
120
129.7
141.2
150
160
171.4
177.8
192
200
208.7
218.2
228.6
240
252.6
266.7
282.4
300
Value
10
000000 to
111111
Value
011
see
fr
Table 17
(Hz)
[1]
Universal LCD driver for low multiplex rates
Description
fixed value
6-bit binary value of 0 to 59
Description
fixed value
nominal frame frequency (Hz)
Resultant oscillator
frequency, f
2880
3360
3840
4368
4800
5232
5760
6226
6778
7200
7680
8227
8534
9216
9600
10018
10474
10973
11520
12125
12802
13555
14400
osc
(Hz)
Duty cycle (%)
20 : 80
7 : 93
47 : 53
40 : 60
33 : 67
27 : 73
20 : 80
13 : 87
5 : 95
50 : 50
47 : 53
43 : 57
41 : 59
36 : 64
33 : 67
30 : 70
27 : 73
23 : 77
20 : 80
16 : 84
10 : 90
5 : 95
50 : 50
PCA9620
© NXP B.V. 2010. All rights reserved.
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